LAN SYSTEM SECTION LAN CONTENTS ELECTRICAL LAN-1 CAN FUNDAMENTAL SERVICE INFORMATION... 2

Transcription

1 TR ST SYST TTS UT SRV RT... 2 RUTS... 2 recaution for Trouble iagnosis...2 recaution for arness Repair...2 SYST SRT... 3 ommunication System...3 iag on...4 TRU SS... 6 ondition of rror etection...6 Symptom When rror ccurs in ommunication System...6 Self-iagnosis...9 iagnostic Support onitor...9 TRU SS WRK W...12 nformation eeded for Trouble iagnosis...12 ow to Use ommunication Signal hart...12 Trouble iagnosis low hart...13 Trouble iagnosis rocedure...13 SRV RT...35 X R T...35 T o. ndex...35 W T US TS ST...36 aution...36 bbreviation ist...36 RUTS...37 recaution for Supplemental Restraint System (SRS) "R " and "ST T R-T- SR"...37 recaution for Trouble iagnosis...37 recaution for arness Repair...37 TRU SS...39 iagnostic Support onitor...39 System Specification hart...42 ommunication Signal hart...43 Schematic...48 Wiring iagram nterview Sheet...52 ata Sheet...52 System (Type 1)...54 System (Type 2)...55 System (Type 3)...56 omponent arts ocation...57 arness ayout...57 alfunction rea hart...57 ain ine etween T and ata ink onnector...58 ranch ine ircuit...59 S ctuator and lectric Unit (ontrol Unit) ranch ine ircuit...59 T ranch ine ircuit...60 river Seat ontrol Unit ranch ine ircuit...60 ranch ine ircuit...61 isplay ontrol Unit ranch ine ircuit...62 isplay Unit ranch ine ircuit...62 ata ink onnector ranch ine ircuit...63 ront ir ontrol ranch ine ircuit...63 ombination eter ranch ine ircuit...64 Steering ngle Sensor ranch ine ircuit...65 /R ranch ine ircuit...65 ommunication ircuit

2 RUTS < SRV RT > [ UT] SRV RT RUTS recaution for Trouble iagnosis : UT: ever apply 7.0 V or more to the measurement terminal. Use a tester with open terminal voltage of 7.0 V or less. Turn the ignition switch and disconnect the battery cable from the negative terminal when checking the harness. recaution for arness Repair Solder the repaired area and wrap tape around the soldered area. fray of twisted lines must be within 110 mm (4.33 in). : SK8766 ypass connection is never allowed at the repaired area. ypass connection may cause communication error. The spliced wire becomes separated and the characteristics of twisted line are lost. SK8767 Replace the applicable harness as an assembly if error is detected on the shield lines of communication line. -2

3 SYST SRT < SRV RT > [ UT] SYST SRT ommunication System : communication is a multiplex communication system. This enables the system to transmit and receive large quantities of data at high speed by connecting control units with two communication lines (- and -). ontrol units on the network transmit signals using the communication control circuit. They receive only necessary signals from other control units to operate various functions. communication lines adopt twisted-pair line style (two lines twisted) for noise immunity. SYST R SK8887 ach control unit passes an electric current to the termination circuits when transmitting communication signal. The termination circuits produce an electrical potential difference between - and -. communication system transmits and receives communication signals by the potential difference. omponent ain line ranch line Splice Termination circuit escription communication line between splices communication line between splice and a control unit point connecting a branch line with a main line Refer to " UT TR RUT". -3

4 SYST SRT < SRV RT > [ UT] UT TR RUT SK8713 omponent controller Transceiver oise filter Termination circuit * (Resistance of approx. 120 Ω) *: These are the only control units wired with both ends of communication system. iag on System description t controls communication signal transmission and reception, error detection, etc. t converts digital signal into communication signal, and communication signal into digital signal. t eliminates noise of communication signal. t produces potential difference. : SRT iag on is a diagnosis using communication instead of previous 1 and 2 communication lines, between control units and diagnosis unit. -4

5 SYST SRT < SRV RT > [ UT] System iagram ame arness escription SK Tx Rx t is used for trouble diagnosis. (- and - are used for controlling) 2 K- t is used for trouble diagnosis. (- and - are used for controlling) iag on - - t is used for trouble diagnosis and control. -5

6 TRU SS < SRV RT > [ UT] TRU SS ondition of rror etection : U1000 or U1001 is indicated on S- RSUTS on SUT- if communication signal is not transmitted or received between units for 2 seconds or more. UT SYST RRR communication line open (-, -, or both) communication line short (ground, between communication lines, other harnesses) rror of communication control circuit of the unit connected to communication line W U1000 R U1001 S T V TU UT SYST S R Removal/installation of parts: rror may be detected when removing and installing communication unit and related parts while turning the ignition switch. ( T except for communication may be detected.) use blown out (removed): communication of the unit may cease. Voltage drop: rror may be detected if voltage drops due to discharged battery when turning the ignition switch (epending on the control unit which carries out communication). rror may be detected if the power supply circuit of the control unit, which carries out communication, malfunctions (epending on the control unit which carries out communication). rror may be detected if reprogramming is not completed normally. communication system is normal if U1000 or U1001 is indicated on S- RSUTS of - SUT- under the above conditions. rase the memory of the self-diagnosis of each unit. Symptom When rror ccurs in ommunication System : n communication system, multiple units mutually transmit and receive signals. ach unit cannot transmit and receive signals if any error occurs on communication line. Under this condition, multiple control units related to the root cause malfunction or go into fail-safe mode. RRR X ach vehicle differs in symptom of each unit under fail-safe mode and communication line wiring. Refer to -36, "bbreviation ist" for the unit abbreviation. xample: T branch line open circuit SK8738 Unit name Symptom ngine torque limiting is affected, and shift harshness increases. Reverse warning chime does not sound. -6

7 TRU SS < SRV RT > [ UT] S control unit ombination meter Unit name S actuator and electric unit (control unit) T /R ormal operation. xample: ata link connector branch line open circuit Symptom Shift position indicator and indicator turn. Warning lamps turn. ormal operation. o impact on operation. ormal operation. Unit name S control unit ombination meter S actuator and electric unit (control unit) T /R ormal operation. Symptom SK8739 When data link connector branch line is open, transmission and reception of communication signals are not affected. Therefore, no symptoms occur. owever, be sure to repair malfunctioning circuit. When data link connector branch line is open, U list displayed on the SUT- SU- RT TR may be the same as when the communication line has short-circuit. owever, symptoms differ depending on the case. See below chart for the differences. U list on the SURT TR (SUT-) ifference of symptom ata link connector branch line open circuit -, - harness short-circuit ll iag on units are not indicated. ormal operation. ost of the units which are connected to the communication system enter fail-safe mode or are deactivated. -7

8 TRU SS < SRV RT > [ UT] xample: ain ine etween ata ink onnector and S ctuator and lectric Unit (ontrol Unit) pen ircuit SK8740 Unit name Symptom S control unit ombination meter S actuator and electric unit (control unit) T /R ngine torque limiting is affected, and shift harshness increases. Reverse warning chime does not sound. The front wiper moves under continuous operation mode even though the front wiper switch being in the intermittent position. The steering effort increases. The shift position indicator and indicator turn. The speedometer is inoperative. The odo/trip meter stops. ormal operation. o impact on operation. When the ignition switch is, The headlamps (o) turn. The cooling fan continues to rotate. xample: -, - arness Short ircuit SK8741-8

9 TRU SS < SRV RT > [ UT] Unit name S control unit ombination meter S actuator and electric unit (control unit) T /R Self-iagnosis Symptom ngine torque limiting is affected, and shift harshness increases. ngine speed drops. Reverse warning chime does not sound. The front wiper moves under continuous operation mode even though the front wiper switch being in the intermittent position. The room lamp does not turn. The engine does not start (if an error or malfunction occurs while turning the ignition switch.) The steering lock does not release (if an error or malfunction occurs while turning the ignition switch.) The steering effort increases. The tachometer and the speedometer do not move. Warning lamps turn. ndicator lamps do not turn. ormal operation. o impact on operation. When the ignition switch is, The headlamps (o) turn. The cooling fan continues to rotate. : T U1000 U1001 U1002 U1010 Self-diagnosis item (SUT- indication) RUT RUT SYST TR UT() iagnostic Support onitor T detection condition When is not transmitting or receiving communication signal of (emission-related diagnosis) for 2 seconds or more. When a control unit (except for ) is not transmitting or receiving communication signal for 2 seconds or more. When is not transmitting or receiving communication signal other than (emission-related diagnosis) for 2 seconds or more. When a control unit is not transmitting or receiving communication signal for 2 seconds or less. When an error is detected during the initial diagnosis for controller of each control unit. nspection/ction Refer to -12. Start the inspection. Refer to the applicable section of the indicated control unit. Replace the control unit indicating U1010. : SUT- and diagnostic support monitor (on-board diagnosis function) are used for detecting root cause. TR T (SUT-) -9

10 TRU SS < SRV RT > [ UT] xample: SURT TR indication Without ST K1075 tem RST escription With ST nitial diagnosis Transmission diagnosis ontrol unit name (Reception diagnosis) K K UKW K UKW ormal at present ontrol unit error (xcept for some control units) ormal at present Unable to transmit signals for 2 seconds or more. iagnosis not performed ormal at present Unable to receive signals for 2 seconds or more. iagnosis not performed o control unit for receiving signals. (o applicable optional parts) tem RST ST escription K ormal at present and in the past Transmission diagnosis K 1 39 ormal at present, but unable to transmit signals for 2 seconds or more in the past. (The number indicates the number of ignition switch cycles from to.) UKW 0 Unable to transmit signals for 2 seconds or more at present. K ormal at present and in the past ontrol unit name (Reception diagnosis) K ormal at present, but unable to receive signals for 2 seconds or more 1 39 in the past. (The number indicates the number of ignition switch cycles from to.) UKW 0 Unable to receive signals for 2 seconds or more at present. iagnosis not performed. o control unit for receiving signals. (o applicable optional parts) TR T (-R SS) or some models, communication diagnosis result is received from the vehicle monitor. (SUT- is not available.) Refer to -39, " iagnostic Support onitor" for the details. -10

11 TRU SS < SRV RT > [ UT] xample: Vehicle isplay tem _ (nitial diagnosis) _R_1 (Transmission diagnosis) _R_2 9 (Reception diagnosis of each unit) Result indicated rror counter K 0 ormal at present 1 50 K 0 ormal at present UKW 1 50 K 0 ormal at present UKW 1 50 escription ontrol unit error (The number indicates how many times diagnosis has been run.) Unable to transmit for 2 seconds or more at present. (The number indicates how many times diagnosis has been run.) Unable to transmit for 2 seconds or more at present. (The number indicates how many times diagnosis has been run.) iagnosis not performed. o control unit for receiving signals. (o applicable optional parts) -11

12 TRU SS WRK W < SRV RT > [ UT] TRU SS WRK W nformation eeded for Trouble iagnosis communication system performs trouble diagnosis with the following tools. : Tool nterview sheet ata sheet iagnosis sheet U list (n the SURT TR ) S- RSUTS (SUT-) SURT TR (SUT-) communication signal chart bbreviation list Usage or filling in vehicle information and interview with customer. or copying on-board diagnosis data. or detecting the root cause. (iagnosis sheet includes system diagram for every system type) or checking the condition of control units and the status of communication. or converting information received from a customer into communication signal transmission and reception. This information can be used to judge whether a circuit between control units is normal or abnormal. or checking abbreviations in communication signal chart and diagnosis sheet. ow to Use ommunication Signal hart : The communication signal chart lists the signals needed for trouble diagnosis. t is useful for detecting the root cause by finding a signal related to the symptom, and by checking transmission and reception unit. SK

13 TRU SS WRK W < SRV RT > [ UT] Trouble iagnosis low hart : K1210 Trouble iagnosis rocedure : TRVW WT USTR nterview with the customer is important to detect the root cause of communication system errors and to understand vehicle condition and symptoms for proper trouble diagnosis. oints in interview What: arts name, system name When: ate, requency Where: Road condition, lace n what condition: riving condition/environment -13

14 TRU SS WRK W < SRV RT > [ UT] Result: Symptom heck normal units as well as error symptoms. - xample: ircuit between and the combination meter is judged normal if the customer indicates tachometer functions normally. When a communication system error is present, multiple control units may malfunction or go into failsafe mode. ndication of the combination meter is important to detect the root cause because it is the most obvious to the customer, and it performs communication with many units. ST V T heck whether or not U1000 or U1001 is indicated on S- RSUTS by SUT-. Root cause cannot be detected using the procedure in this section if U1000 or U1001 is not indicated. heck whether the symptom is reproduced or not. o not turn the ignition switch or disconnect the battery cable while reproducing the error. The error may temporarily correct itself, making it difficult to determine the root cause. The procedures for present errors differ from the procedures for past errors. Refer to "TT T RT US". K SYST TY (W T US SYST TY ST RT) etermine system type based on vehicle equipment. Then choose the correct diagnosis sheet. There are two styles for system type specification charts. epending on the number of available system types, either style or style may be used. System Type Specification hart (Style ) SK

15 TRU SS WRK W < SRV RT > [ UT] system type is easily checked with the vehicle equipment identification information shown in the chart. SK8888 System Type Specification hart (Style ) -15

16 TRU SS WRK W < SRV RT > [ UT] system type is easily checked with the vehicle equipment identification information shown in the chart. SK8889 RT TRVW ST ill out the symptom described by the customer, vehicle condition, and system type on the interview sheet. -16

17 TRU SS WRK W < SRV RT > [ UT] nterview Sheet (xample) K1211 T T ollect SUT- ata rint out or save the following SUT- data. S- RSUTS SURT TR ( U list included) -17

18 TRU SS WRK W < SRV RT > [ UT] Some items may not be needed depending on system type of vehicle. K1212 reate n-board iagnosis opy Sheet isplay the trouble diagnosis result of communication with the on-board diagnosis function on the vehicle monitor, etc. opy them on the on-board diagnosis copy sheet. or some models, communication diagnosis result is received from the vehicle monitor. (SUT- is not available.) -18

19 TRU SS WRK W < SRV RT > [ UT] or the details, refer to -52, "ata Sheet". RT SS ST e sure to use the diagnosis sheet for the correct system type. rint iagnosis Sheet rint the diagnosis sheet for the applicable system type. heck ollected ata ake sure that all Us are received, referring to U list. SK

20 TRU SS WRK W < SRV RT > [ UT] or abbreviations, refer to -36, "bbreviation ist". TT T RT US dentify the root cause using the created diagnosis sheet. dentifying the root cause raw a line on the diagnosis sheet to indicate the possible cause. arrow the search. olor-code when drawing lines. o not draw a line onto a existing line. rawing a line is not necessary if the circuit is shorted. Refer to "resent rror Short ircuit ", "ast rror Short ircuit ". Refer to the following for details of the trouble diagnosis procedure. "resent rror pen ircuit " "resent rror Short ircuit " "ast rror pen ircuit " "ast rror Short ircuit " When the root cause appears to be a branch line or short circuit, be sure to check the control unit as well as the communication line. resent rror pen ircuit -20 K1213

21 TRU SS WRK W < SRV RT > [ UT] dentify the error circuit using information from the SURT TR ( U list included). 1. U list: heck the items indicated in U list. raw a line on the diagnosis sheet to indicate the error circuit. communication line has no error if units other than iag on units are not indicated. n error may be on the power supply of the control unit, 1 line or 2 line. a. T which is iag on unit, is not indicated on U list. This indicates that is not receiving a signal from T. raw a line to indicate an error between and T (line 1-a in the figure below). iag on units are not indicated on the U list when the line between iag on unit and the data link connector is open. or a description of iag on, refer to -4, "iag on ". K SURT TR: heck each item on SURT TR. raw a line on the diagnosis sheet to indicate the error circuit. a. Reception item of : n T, UKW is indicated. This means cannot receive the signal from T. raw a line to indicate an error between and T (line 2-a in the figure below). f UKW is indicated on TRST, then the control unit cannot transmit communication signal to each unit. raw a line between the control unit and the splice. b. Reception item of S : n T, UKW is indicated. This means S cannot receive the signal from T. raw a line to indicate an error between S and T (line 2-b in the figure below). -21

22 TRU SS WRK W < SRV RT > [ UT] c. Reception item of V : UKW is not indicated. This indicates normal communication between V and its receiving units. o not draw any line. K1215 d. Reception item of : n T, UKW is indicated. This means cannot receive the signal from T. raw a line to indicate an error between and T (line 2-d in the figure below). e. Reception item of S and -KY : UKW is not indicated. This indicates normal communication between S and -KY and their receiving units. o not draw any line. -22

23 TRU SS WRK W < SRV RT > [ UT] n SURT TR (without ST), UKW is indicated even though the item is not used in the trouble diagnosis. or the details of each item on diagnostic support monitor, refer to -39, " iagnostic Support onitor". K1216 f. Reception item of & : n T, UKW is indicated. This means & cannot receive the signal from T. raw a line to indicate an error between & and T (line 2-f in the figure below). g. Reception item of : n T, UKW is indicated. This means cannot receive the signal from T. raw a line to indicate an error between and T (line 2-g in the figure below). -23

24 TRU SS WRK W < SRV RT > [ UT] h. Reception item of S : UKW is not indicated. This indicates normal communication between S and its receiving units. o not draw any line. K1217 i. Reception item of - : UKW is not indicated. This indicates normal communication between - and its receiving units. o not draw any line. 3. ased on information received from SURT TR, place a check mark on the known good communication line between and -. a. Through the previous procedure, the circuit between splice and T has the most amount of lines (shade 3-a in the figure below). b. lace a check mark on the known good lines to establish the error circuit. -24

25 TRU SS WRK W < SRV RT > [ UT] Reception item of - : n, K is indicated. - communicates normally with. ut a check mark on the normal circuit between and - (check mark 3-b in the figure below). K Through the above procedure, the error is detected in the T branch line (shaded in the figure below). or abbreviations, refer to -36, "bbreviation ist". -25

26 TRU SS WRK W < SRV RT > [ UT] 5. erform the inspection for the detected error circuit. or the inspection procedure, refer to -57, "alfunction rea hart". resent rror Short ircuit When the symptoms listed below exist, a short circuit of the communication line is a possible cause. Received data K1219 tem (SUT-) U list (on the SURT TR) SURT TR ndication ll iag on units are not indicated. UKW is indicated under TRST and most reception items. rror symptom ost the units connected to the communication system go into fail-safe mode or are deactivated. nspection procedure -26

27 TRU SS WRK W < SRV RT > [ UT] Refer to -57, "alfunction rea hart". K1220 ast rror pen ircuit Review communication signal chart based on information received from the interview with the customer and on past error information from S- RSUTS and SURT TR. -27

28 TRU SS WRK W < SRV RT > [ UT] 1. S- RSUTS: nspect the control units indicating U1000 or U1001 on S- RSUTS. K SURT TR (with ST): heck the SURT TR (with ST) of units indicating U1000 or U1001 on S- RSUTS. raw a line on the diagnosis sheet to indicate the possible error circuit. or the details of each indication on SURT TR, refer to -39, " iagnostic Support onitor". a. Reception item of : V/TS/S, 3 is indicated in the ST. This means could not receive the signal from S in the past. raw a line between and S (line 2-a in the figure below). b. Reception item of & : V/TS/S, 3 is indicated in the ST. This means & could not receive the signal from S in the past. raw a line between & and S (line 2-b in the figure below). -28

29 TRU SS WRK W < SRV RT > [ UT] c. Reception item of T : V/TS/S, 3 is indicated in the ST. This means T could not receive the signal from S in the past. raw a line between T and S (line 2-c in the figure below). K SURT TR (without ST): heck the SURT TR (without ST) of units indicating U1000 or U1001 on S- RSUTS. raw a line on the diagnosis sheet to indicate the possible error circuit. While an error occurred in the past according to S- RSUTS, it is unclear which signal is not received. ssume that errors were detected from all reception items. raw a single line among the unit and all reception items. (Work flow differs from SURT TR (with ST).) a. Reception item of S : ssume that the unit could not receive the signals from, S, and &. raw a line among S,, S, and & (line 3-a in the figure below). -29

30 TRU SS WRK W < SRV RT > [ UT] b. Reception item of S : ssume that the unit could not receive the signal from. raw a line between S and (line 3-b in the figure below). K Search for the possible cause using communication signal chart using information from the interview with the customer. or the details of communication signal, refer to -43, " ommunication Signal hart". a. S warning lamp turned and speedometer did not move: This means that S warning lamp signal and Vehicle speed signal could not communicate between & and S (4-a in the figure below). -30

31 TRU SS WRK W < SRV RT > [ UT] b. The tachometer moved normally: This means that ngine speed signal could communicate normally between and & (4-b in the figure below). SK ill out the diagnosis sheet based on information from step 4. a. The S warning lamp turned and speedometer did not move: ssume that a possible cause is no communication between & and S. raw a line between & and S. (ine 5-a in the figure below). -31

32 TRU SS WRK W < SRV RT > [ UT] b. The tachometer moved normally: ut check marks between and &. The circuit between and & is functioning properly (check marks 5-b in the figure below). SK The circuit which has the most amount of lines are the possible cause. rror is detected from S actuator and electric unit (control unit) branch line (shaded in the figure below). or abbreviations, refer to -36, "bbreviation ist". -32

33 TRU SS WRK W < SRV RT > [ UT] 7. erform the inspection procedure for the possible cause. Refer to -57, "alfunction rea hart". K1224 ast rror Short ircuit When the symptoms listed below exist, a short circuit of the communication line is a possible cause. tem (SUT-) ndication nspection procedure S- RSUTS U1000 and U1001 is indicated in the past for most units. Refer to -57, "alfunction SURT TR nly on SURT TR (with ST), 1-39 is indicated on ST of TRST and the reception item. rea hart". -33

34 TRU SS WRK W < SRV RT > [ UT] K

35 < SRV RT > SRV RT X R T T o. ndex X R T [] : T Self-diagnosis item (SUT- indication) T detection condition nspection U1000 U1001 U1002 RUT RUT SYST When is not transmitting or receiving communication signal of (emission-related diagnosis) for 2 seconds or more. When a control unit (except for ) is not transmitting or receiving communication signal for 2 seconds or more. When is not transmitting or receiving communication signal other than (emission-related diagnosis) for 2 seconds or more. When a control unit is not transmitting or receiving communication signal for 2 seconds or less. Refer to -36. Start the inspection. Refer to the applicable section of the indicated control unit. U1010 TR UT() When an error is detected during the initial diagnosis for controller of each control unit. Replace the control unit indicating U

36 < SRV RT > W T US TS ST aution W T US TS ST [] : This section describes information peculiar to a vehicle, sheets for trouble diagnosis, and inspection procedures. or trouble diagnosis procedure, refer to -13, "Trouble iagnosis rocedure". bbreviation ist bbreviations in communication signal chart, and the diagnosis sheet are as per the following list. bbreviation Unit name ST SYST (SUT-) : SURT TR (SUT-) - ir bag diagnosis sensor unit R S S actuator and electric unit (control unit) S V/TS/S river seat control unit UT RV S. /S S isplay unit isplay control unit SY ata link connector V ront air control V V - /R /R /R & ombination meter TR/& TR/& STR Steering angle sensor STR T T TRSSS T -36

37 < SRV RT > RUTS RUTS [] recaution for Supplemental Restraint System (SRS) "R " and "ST T R-TSR" : The Supplemental Restraint System such as R and ST T R-TSR, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. nformation necessary to service the system safely is included in the SUT RSTRT SYS- T and ST TS of this Service anual. WR: To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized SS/T dealer. mproper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. or removal of Spiral able and ir ag odule, see the SUT RSTRT SYST. o not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service anual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. RUTS W US WR TS (R R TR) RS WR: When working near the irbag iagnosis Sensor Unit or other irbag System sensors with the ignition or engine running, T use air or electric power tools or strike near the sensor(s) with a hammer. eavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the ignition, disconnect the battery, and wait at least 3 minutes before performing any service. recaution for Trouble iagnosis : UT: ever apply 7.0 V or more to the measurement terminal. Use a tester with open terminal voltage of 7.0 V or less. Turn the ignition switch and disconnect the battery cable from the negative terminal when checking the harness. recaution for arness Repair Solder the repaired area and wrap tape around the soldered area. fray of twisted lines must be within 110 mm (4.33 in). : SK

38 < SRV RT > RUTS ypass connection is never allowed at the repaired area. ypass connection may cause communication error. The spliced wire becomes separated and the characteristics of twisted line are lost. [] SK8767 Replace the applicable harness as an assembly if error is detected on the shield lines of communication line. -38

39 < SRV RT > TRU SS iagnostic Support onitor TRU SS [] : Use SURT TR for detecting the root cause. TR T ST (SUT-) T 0: rror at present, 1 39: rror in the past (umber means the number of times the ignition switch is turned ) SU- RT TR TRST *: 39 or higher number is fixed at 39 until the self-diagnosis result is erased. S ctuator and lectric Unit (ontrol Unit) odels with TS S T V/TS/S TR/& /S V escription Signal transmission status Signal receiving status from the S actuator and electric unit (control unit) Signal receiving status from the combination meter Signal receiving status from the ormal rror RST ST RST ST UT: ever replace the unit even when is indicated on the T at this stage. ollow the trouble diagnosis procedures. odels with V K ot used even though indicated T Signal receiving status from the T K S ot used even though indicated /R Signal receiving status from the /R K e4w W/4W SU- RT TR T TRST T Status of controller Signal transmission status ot used even though indicated escription Signal receiving status from the Signal receiving status from the T K or UKW * K or UKW * K or UKW * ormal rror RST K aution UKW -39

40 < SRV RT > TRU SS [] T SU- RT TR escription ormal rror RST S T Status of controller UT: ever replace the unit even when is indicated on the T at this stage. ollow the trouble diagnosis procedures. T Replace the unit when is indicated on the T. aution TRST Signal transmission status K Signal receiving status from the UKW T Signal receiving status from the T TR/& ot used even though indicated STR Signal receiving status from the steering angle sensor K UKW ot used even though indicated T SU- RT TR escription ormal rror RST T Status of controller TRST Signal transmission status T V/TS/S Signal receiving status from the Signal receiving status from the S actuator and electric unit (control unit) K UKW TR/& Signal receiving status from the combination meter river Seat ontrol Unit T 0: rror at present, 1 39: rror in the past (umber means the number of times the ignition switch is turned ) SU- RT TR TRST TR/& /S T escription Signal receiving status from the combination meter Signal receiving status from the Signal receiving status from the T *: 39 or higher number is fixed at 39 until the self-diagnosis result is erased. Replace the unit when is indicated on the T. ot used even though indicated ormal rror RST ST RST ST K K or UKW * T SU- RT TR escription ormal rror RST T Status of controller TRST Signal transmission status /R Signal receiving status from the Signal receiving status from the /R K UKW TR/& Signal receiving status from the combination meter -KY ot used even though indicated ront ir ontrol -40

41 < SRV RT > V T TRU SS [] 0: rror at present, 1 39: rror in the past (umber means the number of times the ignition switch is turned ) *: 39 or higher number is fixed at 39 until the self-diagnosis result is erased. ombination eter & T SU- RT TR TRST T /S V/TS/S /R SY -KY S W/4W e4w R TR- escription 0: rror at present, 1 39: rror in the past (umber means the number of times the ignition switch is turned ) SU- RT TR TRST T /S V/TS/S /R SY -KY S W/4W e4w R TR- *: 39 or higher number is fixed at 39 until the self-diagnosis result is erased. ormal rror RST ST RST ST Signal transmission status K Signal receiving status from the K or UKW * ot used even though indicated Signal receiving status from the Signal receiving status from the S actuator and electric unit (control unit) Signal receiving status from the display control unit escription Signal transmission status Signal receiving status from the Signal receiving status from the T Signal receiving status from the Signal receiving status from the S actuator and electric unit (control unit) Signal receiving status from the /R K ot used even though indicated K ot used even though indicated K or UKW * K or UKW * ormal rror RST ST RST ST K ot used even though indicated K or UKW * /R -41

42 < SRV RT > - T TRU SS [] 0: rror at present, 1 39: rror in the past (umber means the number of times the ignition switch is turned ) SU- RT TR TRST /S escription Signal transmission status Signal receiving status from the Signal receiving status from the *: 39 or higher number is fixed at 39 until the self-diagnosis result is erased. TR T ST (-R SS) ormal rror RST ST RST ST isplay ontrol Unit diagnostic support monitor of the display control unit is indicated on the vehicle display. Refer to the following. odels with color display: Refer to V-145, " ommunication ine heck (With olor isplay)". odels with navigation system: Refer to V-193, " ommunication ine heck". K K or UKW * K6080 Unit name iagnosis item escription isplay control unit R_1 _R_2 _R_3 _R_4 _R_5 _R_6 _R_7 _R_8 _R_9 Status of controller Signal transmission status *: The error counter stops counting when it reaches 50 and holds 50 until it is deleted. System Specification hart Signal receiving status from the Signal receiving status from the Signal receiving status from the front air control -42 ndicated items on SURT TR ormal rror Result indicated rror counter (Reference) Result indicated rror counter (Reference) : etermine system type from the following specification chart. Then choose the correct diagnosis sheet. K 0 or 1 50 * Signal receiving status from the combination meter ot used even though indicated Signal receiving status from the /R K ot used even though indicated UKW 1 50 * 0 or UKW 1 50 * 1 50 *

43 TRU SS < SRV RT > Refer to -13, "Trouble iagnosis rocedure" for how to use system specification chart. ody type Wagon [] xle ngine 2W VQ35 Transmission /T rake control TS V utomatic drive positioner X olor display X X onochrome display X system type iagnosis sheet communication signal chart TY 1/TY 2 TY 3 X: pplicable V QUT TT RT heck system type from the vehicle shape and equipment. ommunication Signal hart W0223 : Refer to -12, "ow to Use ommunication Signal hart" for how to use communication signal chart. TY 1/TY 2 Refer to -36, "bbreviation ist" for the abbreviations of the connecting units. -43

44 < SRV RT > TRU SS [] T: Transmit R: Receive Signal name/onnecting unit S T S * V & - / compressor request signal T R ccelerator pedal position signal T R R S RUS indicator signal T R S cancel request signal T R S operation signal T R S ST indicator signal T R ooling fan speed request signal T R T R ngine and /T integrated control signal R T ngine coolant temperature signal T R R R ngine speed signal T R R R R R T R uel consumption monitor signal R T alfunction indicator lamp signal T R /T shift schedule change demand signal T R S operation signal T R S warning lamp signal T R rake warning lamp signal T R S indicator lamp signal T R Stop lamp switch signal T R TS indicator lamp signal T R TS operation signal T R T R R Vehicle speed signal R R R R T /T self-diagnosis signal R T / indicator lamp signal T R utput shaft revolution signal R T range signal R T Shift position signal T R Turbine revolution signal R T / switch signal R T R lower fan motor switch signal R T uzzer output signal T R ornering lamp request signal T R oor switch signal T R R R ront fog light request signal T R ront wiper request signal T R igh beam request signal T R R orn chirp signal T R gnition switch signal T R ow beam request signal T R osition light request signal T R R -44

45 < SRV RT > TRU SS [] Signal name/onnecting unit S T S * V & - Rear window defogger switch signal T R R R Sleep wake up signal T R R T R System setting signal R T Tire pressure data signal T R Tire pressure signal T R Turn indicator signal T R T R / switch/indicator signal R T wake up request signal R T T istance to empty signal R T uel level sensor signal R T Seat belt buckle switch signal R T ooling fan speed signal R T ront wiper stop position signal R T igh beam status signal R T gnition power supply confirmation signal R T /R refuse to sleep signal R T /R wake up sleep request signal R T ow beam status signal R T il pressure switch signal R T Rear window defogger control signal R T *: odels with color display data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted. TY 3 Refer to -36, "bbreviation ist" for the abbreviations of the connecting units. T: Transmit R: Receive Signal name/onnecting unit S T S V & STR - / compressor request signal T R ccelerator pedal position signal T R R S RUS indicator signal T R S cancel request signal T R S operation signal T R S ST indicator signal T R ooling fan speed request signal T R T R ngine and /T integrated control signal R T ngine coolant temperature signal T R R R ngine speed signal T R R R R R -45

46 < SRV RT > TRU SS [] Signal name/onnecting unit S T S V & STR - uel consumption monitor signal T R R T alfunction indicator lamp signal T R /T shift schedule change demand signal T R S operation signal T R S warning lamp signal T R rake warning lamp signal T R S indicator lamp signal T R Stop lamp switch signal T R Vehicle speed signal T R R R R R R R T V indicator lamp signal T R V operation signal T R /T self-diagnosis signal R T / indicator lamp signal T R utput shaft revolution signal R T range signal R T R R range signal R T R Shift position signal T R Turbine revolution signal R T System setting signal T T R R R T / switch signal R T R lower fan motor switch signal R T uzzer output signal T R ornering lamp request signal T R oor switch signal R T R R R ront fog light request signal T R ront wiper request signal T R igh beam request signal T R R orn chirp signal T R gnition switch signal R T R Key fob door unlock signal R T Key fob signal R T Key switch signal R T ow beam request signal T R osition light request signal T R R Rear window defogger switch signal T R R R Sleep wake up signal T R R Tire pressure data signal T R Tire pressure signal T R Turn indicator signal T R -46

47 < SRV RT > TRU SS [] Signal name/onnecting unit S T S V & STR - T R / switch/indicator signal R T wake up request signal R T T istance to empty signal R T uel level sensor signal R T Seat belt buckle switch signal R T Steering angle sensor signal R T ooling fan speed signal R T ront wiper stop position signal R T igh beam status signal R T gnition power supply confirmation signal R T /R refuse to sleep signal R T /R wake up sleep request signal R T ow beam status signal R T il pressure switch signal R T Rear window defogger control signal R T data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted. -47

48 < SRV RT > Schematic TRU SS [] : WW

49 < SRV RT > Wiring iagram - - TRU SS [] : KW

50 < SRV RT > TRU SS [] WW

51 < SRV RT > TRU SS [] WW

52 < SRV RT > nterview Sheet TRU SS [] : SK8898 ata Sheet : R SS Y ST diagnostic support monitor of the display control unit is indicated on the vehicle display. Refer to the following. odels with color display: Refer to V-145, " ommunication ine heck (With olor isplay)". -52

53 < SRV RT > TRU SS odels with navigation system: Refer to V-193, " ommunication ine heck". [] SK

54 < SRV RT > System (Type 1) SS ST TRU SS [] :

55 < SRV RT > System (Type 2) SS ST TRU SS [] :

56 < SRV RT > System (Type 3) SS ST TRU SS [] :

57 < SRV RT > omponent arts ocation TRU SS [] : K T S actuator and electric unit (control 3. /R 121 unit) isplay control unit isplay unit ombination meter Steering angle sensor ata link connector river seat control unit ir bag diagnosis sensor unit ront air control arness ayout : Refer to -40, "arness ayout". alfunction rea hart : alfunction rea ain line between T and data link connector R alfunction rea branch line circuit S actuator and electric unit (control unit) branch line circuit T branch line circuit river seat control unit branch line circuit branch line circuit isplay control unit branch line circuit isplay unit branch line circuit ata link connector branch line circuit ront air control branch line circuit ombination meter branch line circuit Reference -58, "ain ine etween T and ata ink onnector" Reference -59, " ranch ine ircuit" -59, "S ctuator and lectric Unit (ontrol Unit) ranch ine ircuit" -60, "T ranch ine ircuit" -60, "river Seat ontrol Unit ranch ine ircuit" -61, " ranch ine ircuit" -62, "isplay ontrol Unit ranch ine ircuit" -62, "isplay Unit ranch ine ircuit" -63, "ata ink onnector ranch ine ircuit" -63, "ront ir ontrol ranch ine ircuit" -64, "ombination eter ranch ine ircuit" -57

58 < SRV RT > alfunction rea Steering angle sensor branch line circuit /R branch line circuit SRT RUT TRU SS Reference -65, "Steering ngle Sensor ranch ine ircuit" -65, " /R ranch ine ircuit" [] alfunction rea Reference communication circuit -66, " ommunication ircuit" ain ine etween T and ata ink onnector : ST RUR 1.K TR 1. Turn the ignition switch. 2. isconnect the battery cable from the negative terminal. 3. heck the following terminals and connectors for damage, bend and loose connection (connector side and harness side). - arness connector 26 - arness connector 91 K >> T 2. >> Repair the terminal and connector. 2.K RSS TUTY ( RUT) 1. isconnect the harness connectors 26 and heck the continuity between the T harness connector and the harness connector. T harness connector arness connector onnector o. Terminal o. onnector o. Terminal o. 143 K >> T 3. >> Repair the main line between the T and the harness connector K RSS TUTY ( RUT) heck the continuity between the harness connector and the data link connector. arness connector ontinuity 3 5 Yes Yes ata link connector onnector o. Terminal o. onnector o. Terminal o. 91 ontinuity 5 6 Yes Yes K >> resent error: heck the following items again. - ecision of system type. - ot received SUT- data [S- RSUTS, SURT TR ( U list included)]. - ot copied from on-board diagnosis. - rocedure for detecting root cause. ast error: rror was detected in the main line between the T and the data link connector. >> Repair the main line between the harness connector 91 and the data link connector. -58

59 < SRV RT > ranch ine ircuit ST RUR TRU SS [] : K TR 1. Turn the ignition switch. 2. isconnect the battery cable from the negative terminal. 3. heck the terminals and connectors of the for damage, bend and loose connection (unit side and connector side). K >> T 2. >> Repair the terminal and connector. 2.K RSS R RUT 1. isconnect the connector of. 2. heck the resistance between the harness connector terminals. harness connector Resistance (Ω) onnector o. Terminal o pprox K >> T 3. >> Repair the branch line. 3.K WR SUY RU RUT heck the power supply and the ground circuit of the. Refer to -138, "Wiring iagram". K >> resent error: Replace the. Refer to -78, "rocedure fter Replacing ". ast error: rror was detected in the branch line. >> Repair the power supply and the ground circuit. S ctuator and lectric Unit (ontrol Unit) ranch ine ircuit ST RUR : K TR 1. Turn the ignition switch. 2. isconnect the battery cable from the negative terminal. 3. heck the terminals and connectors of the S actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side). K >> T 2. >> Repair the terminal and connector. 2.K RSS R RUT 1. isconnect the connector of S actuator and electric unit (control unit). 2. heck the resistance between the S actuator and electric unit (control unit) harness connector terminals. - odels with TS S actuator and electric unit (control unit) harness connector Resistance (Ω) onnector o. Terminal o pprox odels with V -59

60 < SRV RT > TRU SS [] S actuator and electric unit (control unit) harness connector Resistance (Ω) onnector o. Terminal o pprox K >> T 3. >> Repair the S actuator and electric unit (control unit) branch line. 3.K WR SUY RU RUT heck the power supply and the ground circuit of the S actuator and electric unit (control unit). Refer to the following. odels with TS: R-14, "Schematic" odels with V: R-54, "Schematic" K >> resent error: Replace the S actuator and electric unit (control unit). Refer to the following. - odels with TS: R-41, "Removal and nstallation" - odels with V: R-87, "Removal and nstallation" ast error: rror was detected in the S actuator and electric unit (control unit) branch line. >> Repair the power supply and the ground circuit. T ranch ine ircuit ST RUR : K TR 1. Turn the ignition switch. 2. isconnect the battery cable from the negative terminal. 3. heck the terminals and connectors of the T for damage, bend and loose connection (unit side and connector side). K >> T 2. >> Repair the terminal and connector. 2.K RSS R RUT 1. isconnect the connector of T. 2. heck the resistance between the T harness connector terminals. T harness connector Resistance (Ω) onnector o. Terminal o pprox K >> T 3. >> Repair the T branch line. 3.K WR SUY RU RUT heck the power supply and the ground circuit of the T. Refer to T-49, "ircuit iagram". K >> resent error: Replace the T. Refer to T-47, "/T lectrical arts ocation". ast error: rror was detected in the T branch line. >> Repair the power supply and the ground circuit. river Seat ontrol Unit ranch ine ircuit : ST RUR 1.K TR 1. Turn the ignition switch. -60

61 < SRV RT > TRU SS -61 [] 2. isconnect the battery cable from the negative terminal. 3. heck the following terminals and connectors for damage, bend and loose connection (unit side and connector side). - river seat control unit - arness connector arness connector 37 - arness connector 1 - arness connector 11 K >> T 2. >> Repair the terminal and connector. 2.K RSS R RUT 1. isconnect the connector of driver seat control unit. 2. heck the resistance between the driver seat control unit harness connector terminals. river seat control unit harness connector Resistance (Ω) onnector o. Terminal o pprox K >> T 3. >> Repair the driver seat control unit branch line. 3.K WR SUY RU RUT heck the power supply and the ground circuit of the driver seat control unit. Refer to S-13, "Schematic". K >> resent error: Replace the driver seat control unit. Refer to S-67, "Removal and nstallation". ast error: rror was detected in the driver seat control unit branch line. >> Repair the power supply and the ground circuit. ranch ine ircuit ST RUR : K TR 1. Turn the ignition switch. 2. isconnect the battery cable from the negative terminal. 3. heck the terminals and connectors of the for damage, bend and loose connection (unit side and connector side). K >> T 2. >> Repair the terminal and connector. 2.K RSS R RUT 1. isconnect the connector of. 2. heck the resistance between the harness connector terminals. harness connector Resistance (Ω) onnector o. Terminal o pprox K >> T 3. >> Repair the branch line. 3.K WR SUY RU RUT heck the power supply and the ground circuit of the. Refer to S-15, " ower Supply and round ircuit nspection".

62 < SRV RT > TRU SS K >> resent error: Replace the. Refer to S-17, "Removal and nstallation of ". ast error: rror was detected in the branch line. >> Repair the power supply and the ground circuit. isplay ontrol Unit ranch ine ircuit ST RUR [] : K TR 1. Turn the ignition switch. 2. isconnect the battery cable from the negative terminal. 3. heck the terminals and connectors of the display control unit for damage, bend and loose connection (unit side and connector side). K >> T 2. >> Repair the terminal and connector. 2.K RSS R RUT 1. isconnect the connector of display control unit. 2. heck the resistance between the display control unit harness connector terminals. isplay control unit harness connector Resistance (Ω) onnector o. Terminal o pprox K >> T 3. >> Repair the display control unit branch line. 3.K WR SUY RU RUT heck the power supply and the ground circuit of the display control unit. Refer to. odels with color display: V-130, "ower Supply and round ircuit nspection for isplay ontrol Unit" odels with navigation system: V-181, "ower Supply and round ircuit nspection for isplay ontrol Unit" K >> resent error: Replace the display control unit. Refer to V-148, "Removal and nstallation". ast error: rror was detected in the display control unit branch line. >> Repair the power supply and the ground circuit. isplay Unit ranch ine ircuit ST RUR : K TR 1. Turn the ignition switch. 2. isconnect the battery cable from the negative terminal. 3. heck the terminals and connectors of the display unit for damage, bend and loose connection (unit side and connector side). K >> T 2. >> Repair the terminal and connector. 2.K RSS R RUT 1. isconnect the connector of display unit. 2. heck the resistance between the display unit harness connector terminals. -62