Toyota Sequoia (2005). Manual — part 304
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F19152
Translate ECU
GND
–
DIAGNOSTICS
ABS WITH EBD & BA & TRAC & VSC SYSTEM
DI–1011
1205
INSPECTION PROCEDURE
1
Check DTC of the VSC (See page
)
CHECK:
Check skid control ECU DTC.
RESULT:
DTC is not output
A
DTC is output
B
B
Repair circuit indicated by the output code
(See page
).
A
2
Check for open circuit in harness and connector between GND terminal of the
translate ECU and body ground (See page
).
PREPARATION:
Disconnect the translate ECU connector.
CHECK:
Measure the resistance between the GND terminal and body
ground.
OK:
Continuity
NG
Repair or replace harness or connector (Trans-
late ECU GND circuit).
OK
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DI–1012
–
DIAGNOSTICS
ABS WITH EBD & BA & TRAC & VSC SYSTEM
1206
3
Replace the translate ECU and check if the trouble occurs again.
PREPARATION:
(a)
Clear the translate DTC (See page
).
(b)
Turn the ignition switch OFF.
CHECK:
Turn the ignition switch to the ON position, and check if the same DTC is stored in the memory.
PREPARATION:
DTC 94 is not output
A
DTC 94 is output
B
B
Check and repair suspension control ECU, ECM
or CAN communication system.
A
END
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–
DIAGNOSTICS
ABS WITH EBD & BA & TRAC & VSC SYSTEM
DI–1013
1207
DTC
Normal Code
Malfunction in Translate ECU
CIRCUIT DESCRIPTION
If any trouble occurs in the engine control system, the skid control ECU prohibits ABS & VSC control.
DTC No.
DTC Detecting Condition
Trouble Area
Normal Code
Conditions 1., 2. or 3. continue for 5 sec. or more:
1. Engine malfunction signal is sent from ECM.
2. Shift malfunction signal is sent from ECM.
3. The shift position is other than P and N, and P range
input voltage is 8 V or more.
ECM circuit
ECM
Brake fluid level
Brake fluid level warning switch circuit
Steering angle sensor
Translate ECU
Skid control ECU
Vehicle CAN
VSC+, VSC– circuit (CAN1 communication system)
INSPECTION PROCEDURE
1
Is DTC output for ECM?
Check DTC on page
YES
Repair engine control system according to the
output code (See page
).
NO
2
Check the DTC of the ABS and VSC (See page
).
CHECK:
Check skid control ECU DTC.
RESULT:
Only DTC ”C1203/53” of the VSC system is output
A
Except DTC ”C1203/53” of the VSC system are output
B
B
Repair ABS and VSC control system according
to the code output (See page
A
DI6OF–12
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DI–1014
–
DIAGNOSTICS
ABS WITH EBD & BA & TRAC & VSC SYSTEM
1208
3
Replace the translate ECU and check if the trouble occurs again.
PREPARATION:
(a)
Clear the DTC (See page
(b)
Turn the ignition switch OFF.
CHECK:
Turn the ignition switch to the ON position, and check if the same DTC is stored in the memory.
PREPARATION:
DTC is not output
A
DTC is output
B
B
Replace skid control ECU
(See page
NOTICE:
When replacing the skid control ECU, perform zero point
calibration (See page
A
END
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