2001 TOYOTA HIGHLANDER traction control

G26436
Wire Harness View
E5
S27
ENG+
ENG-
ENG- ENG+
Skid Control ECU
(harness side connector)
ECM
C52361
TC
CGD3
DLC3
05-870
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1060 Author
: Date
:
3 CHECK HARNESS AND CONNECTOR(ECM - SKID CONTROL ECU)
(a) Disconnect the skid control ECU connector and the ECM
connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
E5-24 (ENG+) - S27-9 (ENG+)Below 1 W
E5-30 (ENG-) - S27-23 (ENG-)Below 1 W
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-9 (ENG+) - Body ground10 kW or higher
S27-23 (ENG-) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
4 CHECK HARNESS AND CONNECTOR(DLC 3 - BODY GROUND)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
D3-4 (CG) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK

G26436
Wire Harness View
E5
S27
ENG+
ENG-
ENG- ENG+
Skid Control ECU
(harness side connector)
ECM
05-872
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1062 Author
: Date
:
6 CHECK HARNESS AND CONNECTOR(ECM - SKID CONTROL ECU)
(a) Disconnect the skid control ECU connector and the ECM
connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
E5-24 (ENG+) - S27-9 (ENG+)Below 1 W
E5-30 (ENG-) - S27-23 (ENG-)Below 1 W
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-9 (ENG+) - Body ground10 kW or higher
S27-23 (ENG-) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)

F00052
4
1
T6
05-860
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1050 Author
: Date
:
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 when using the hand-held tester and start from step 2 when not using the
hand-held tester.
1 PERFORM ACTIVE TEST BY HAND-HELD TESTER(TRAC OFF INDICATOR
LIGHT)
(a) Connect the hand-held tester to the DLC3.
(b) Start the engine.
(c) Select the item ºTRAC OFF LIGHTº in the ACTIVE TEST and operate the TRAC OFF indicator light
on the hand-held tester.
ItemVehicle Condition / Test DetailsDiagnostic Note
VSC / TRAC OFF INDTurns VSC / TRAC OFF indicator ON / OFFObserve combination me-
ter
(d) Check that ºONº and ºOFFº of the TRAC OFF indicator light are indicated on the combination meter
when 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 6
OK
2 INSPECT TRACTION CONTROL SWITCH
(a) Remove the TRAC control switch.
(b) Disconnect the TRAC control switch connector T6.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSwitch ConditionSpecified Condition
T6 4 T6 1Pushed in (ON)Below 1 WT6-4 - T6-1Released (OFF)10 kW or higher
NG REPLACE TRACTION CONTROL SWITCH
OK

F45165F44428F45165F44428F45351
ENG-
ENG+ENG-ENG+
Skid Control ECU
(harness side connector)
ECM
TRC+
TRC-
TRC+
TRC-S27
E5
05-862
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1052 Author
: Date
:
5 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - ECM)
(a) Disconnect the skid control ECU connector S27 and ECM
connector E5.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-8 (TRC+) - E5-25 (TRC+)
S27-22 (TRC-) - E5-31 (TRC-)Below 1WS27-9 (ENG+) - E5-24 (ENG+)Below 1 W
S27-23 (ENG-) - E5-30 (ENG-)
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-8 (TRC+) - Body ground
S27-22 (TRC-) - Body ground10 kWor higherS27-9 (ENG+) - Body ground10 kW or higher
S27-23 (ENG-) - Body ground
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
6 INSPECT COMBINATION METER ASSEMBLY (SEE PAGE 05-1868)
NG REPAIR OR REPLACE COMBINATION METER
ASSEMBLY
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)

C52361G24767
I37493
Skid Control ECU
(harness side connector)
S27
TS
D3
DLC3TS
C52361CG
DLC3
D3
05-874
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1064 Author
: Date
:
2 CHECK HARNESS AND CONNECTOR(DLC3 - BODY GROUND)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-24 (TS) - D3-12 (TS)Below 1 W
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-24 (TS) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
3 CHECK HARNESS AND CONNECTOR(BODY GROUND - DLC3)
(a) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
D3-4 (CG) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK

C52361G24767
I37493
Skid Control ECU
(harness side connector)
S27
TS
D3
DLC3TS
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-875
1065 Author
: Date
:
4 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - DLC3)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-24 (TS) - D3-12 (TS)Below 1 W
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-24 (TS) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)

F46287
Skid Control ECU
S27
VSCW
Combination Meter
(harness side view)
C12
(harness side connector)
G24767
GND1
Skid Control ECU
(harness side connector)
S27
05-850
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1040 Author
: Date
:
5 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - COMBINATION
METER)
(a) Disconnect the skid control ECU connector and combina-
tion meter connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
C12 - 7 - S27-36 (VSCW)Below 1 W
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-36 (VSCW) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
6 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - BODY GROUND)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-32 (GND1) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)

F46287
Skid Control ECU
S27
VSCW
Combination Meter
(harness side view)
C12
(harness side connector)
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-853
1043 Author
: Date
:
2 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - COMBINATION
METER)
(a) Disconnect the skid control ECU connector and combina-
tion meter connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
C12 - 7 - S27-36 (VSCW)Below 1 W
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-36 (VSCW) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)