trac off indicator light, trac off switch circuit - Highlander Club

DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEMTRAC OFF INDICATOR LIGHT, TRAC OFF SWITCH CIRCUIT05-85905H3X-03CIRCUIT DESCRIPTIONThe skid control ECU detects the track control main switch ON/OFF signal and turns the track off light on/off.This is the TRAC control main switch. When the TRAC control switch is pressed, the TRAC control does notoperate and the TRAC OFF light comes on.WIRING DIAGRAMECMTRC-TRC+ENG-ENG+Skid Control ECU with Actuator311922GY-BE5IC4S27 TRC-257 8YG-BE5 IC4 S27 TRC+301823RW-GE5 IC4 S27 ENG-2459VW-LE5 IC4 S27 ENG+Combination MeterMPX1MPX218E629E6MPXSystem21C119C12TRACOFF1C11PI15Ignition SWG2 AM1 IG1 4WF7FL BlockW1 2ALTFL MAINBatteryInstrument Panel J/B71C61CHEATER2AM1113 47B1K 3A 3C11AT6Trac Off SW 13WIF31 4 (*1)Center J/BW-B(*1)4 133J3FW(*1)Center J/BB17IC4W-BL-R(*1)IB43S27CSW*1 : 2WDF46300Author:Date:1049

05-860DIAGNOSTICS-ABS WITH EBD & BA & TRAC & VSC SYSTEMINSPECTION PROCEDUREHINT:Start the inspection from step 1 when using the hand-held tester and start from step 2 when not using thehand-held tester.(a)(b)(c)1 PERFORM ACTIVE TEST BY HAND-HELD TESTER(TRAC OFF INDICATORLIGHT)Connect the hand-held tester to the DLC3.Start the engine.Select the item ”TRAC OFF LIGHT” in the ACTIVE TEST and operate the TRAC OFF indicator lighton the hand-held tester.Item Vehicle Condition / Test Details Diagnostic NoteVSC / TRAC OFF IND Turns VSC / TRAC OFF indicator ON / OFFObserve combination meter(d) Check that ”ON” and ”OFF” of the TRAC OFF indicator light are indicated on the combination meterwhen using the hand-held tester.OK:Turn the TRAC OFF indicator light on or off in accordance with the hand-held tester.NG Go to step 6OK2 INSPECT TRACTION CONTROL SWITCHT64 1(a) Remove the TRAC control switch.(b) Disconnect the TRAC control switch connector T6.(c) Measure the resistance according to the value(s) in thetable below.Standard:Tester Connection Switch Condition Specified ConditionT6-4 - T6-1Pushed in (ON)Released (OFF)Below 1 Ω10 kΩ or higherF00052NGREPLACE TRACTION CONTROL SWITCHOKAuthor:Date:1050

DIAGNOSTICS-ABS WITH EBD & BA & TRAC & VSC SYSTEM05-8613 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - TRAC OFFSWITCH)Skid Control ECU(harness side connector)S27(a)(b)Disconnect the skid control ECU connector S27 and theTRAC control switch connector T6.Measure the resistance according to the value(s) in thetable below.Standard:Tester ConnectionSpecified ConditionTRAC Control Switch(harness side connector)CSWT6S27-43 (CSW) - T6-4 (+) Below 1 ΩS27-43 (CSW) - Body ground 10 kΩ or higherT6-1 (E) - Body ground Below 1 ΩE+F46260NG REPAIR OR REPLACE HARNESS ORCONNECTOROK4 INSPECT MULTIPLEX COMMUNCATION SYSTEM (SEE PAGE 05-2040 )OKNG REPAIR MULTIPLEX COMMUNCATIONSYSTEMAuthor:Date:1051

05-862DIAGNOSTICS-ABS WITH EBD & BA & TRAC & VSC SYSTEM5 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - ECM)Skid Control ECU S27(harness side connector) ENG+TRC+TRC- ENG-ECMF44428F45165E5ENG+TRC+TRC-ENG-F45351(a)(b)(c)Disconnect the skid control ECU connector S27 and ECMconnector E5.Measure the resistance according to the value(s) in thetable below.Standard:Tester ConnectionS27-8 (TRC+) - E5-25 (TRC+)S27-22 (TRC-) - E5-31 (TRC-)S27-9 (ENG+) - E5-24 (ENG+)S27-23 (ENG-) - E5-30 (ENG-)Specified ConditionBelow 1 ΩMeasure the resistance according to the value(s) in thetable below.Standard:Tester ConnectionS27-8 (TRC+) - Body groundS27-22 (TRC-) - Body groundS27-9 (ENG+) - Body groundS27-23 (ENG-) - Body groundSpecified Condition10 kΩ or higherNG REPAIR OR REPLACE HARNESS ORCONNECTOROK6 INSPECT COMBINATION METER ASSEMBLY (SEE PAGE 05-1868 )NGREPAIR OR REPLACE COMBINATION METERASSEMBLYOKREPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37 )Author:Date:1052