Toyota Sequoia (2005). Manual — part 307
–
DIAGNOSTICS
ABS WITH EBD & BA & TRAC & VSC SYSTEM
DI–1023
1217
INSPECTION PROCEDURE
1
Check operation of the ABS warning light.
PREPARATION:
(a)
Connect the hand–held tester to the DLC3.
(b)
Turn the ignition switch to the ON position and hand–held tester main switch ON.
(c)
Select the ACTIVE TEST mode on the hand–held.
CHECK:
Check that ”ON” and ”OFF” of the ABS warning light can be shown on the combination meter with the hand–
held tester.
Item
Vehicle Condition/Test Details
Diagnostic Note
ABS WARN LIGHT
Turn ABS warning light ON/OFF
Observe combination meter
OK:
ABS warning light operates.
NG
Go to step 4
OK
2
Is DTC output?
Check DTC on page
YES
Repair circuit indicated by the output code
(See page
).
NO
3
Check that the skid control ECU connector is securely connected to the skid
control ECU (See page
).
NG
Connect the connector to the skid control ECU.
OK
DI–1024
–
DIAGNOSTICS
ABS WITH EBD & BA & TRAC & VSC SYSTEM
1218
4
Check harness and connector between skid control ECU and combination meter
(See page
).
NG
Repair or replace harness or connector.
OK
5
Check ABS warning light.
See combination meter troubleshooting on page
NG
Repair combination meter assembly
(See page
OK
Check and replace skid control ECU
(See page
).
NOTICE:
When replacing the skid control ECU, perform the zero point calibration (See page
).
–
DIAGNOSTICS
ABS WITH EBD & BA & TRAC & VSC SYSTEM
DI–1025
1219
ABS Warning Light Circuit (Does not light up)
CIRCUIT DESCRIPTION
See page
WIRING DIAGRAM
See page
INSPECTION PROCEDURE
1
Check operation of the ABS warning light.
When using the hand–held tester:
PREPARATION:
(a)
Connect the hand–held tester to the DLC3.
(b)
Turn the ignition switch to the ON position and hand–held tester main switch ON.
(c)
Select the ACTIVE TEST mode on the hand–held.
CHECK:
Check that ”ON” and ”OFF” of the ABS warning light can be shown on the combination meter with the hand–
held tester.
Item
Vehicle Condition/Test Details
Diagnostic Note
ABS WARN LIGHT
Turn ABS warning light ON/OFF
Observe combination meter
OK:
ABS warning light operates.
When not using the hand–held tester:
PREPARATION:
(a)
Turn the ignition switch OFF.
(b)
Disconnect the connector from the skid control ECU.
(c)
Turn the ignition switch to the ON position.
CHECK:
Check the ABS warning light comes on.
OK:
ABS warning light comes on.
NG
Go to step 2.
OK
Check and replace skid control ECU
(See page
).
NOTICE:
When replacing the skid control ECU, perform the zero point calibration (See page
).
DIDML–01
DI–1026
–
DIAGNOSTICS
ABS WITH EBD & BA & TRAC & VSC SYSTEM
1220
2
Check harness and connector between skid control ECU and combination meter
(See page
).
NG
Repair or replace harness or connector.
OK
3
Check ABS warning light.
See combination meter troubleshooting on page
NG
Repair combination meter assembly
(See page
OK
Check and replace skid control ECU
(See page
).
NOTICE:
When replacing the skid control ECU, perform the zero point calibration (See page
).
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