Toyota Sequoia (2005). Manual — part 487
–
DIAGNOSTICS
BODY CONTROL SYSTEM
DI–1743
1937
3
Check wire harness and connector between wireless door lock buzzer and body
ECU, body ground and wireless door lock buzzer (See page
).
NG
Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page
I24358
Body ECU
P2
Parking
Brake SW
PKB
1
4
B5
3
4
LG–R
LG–R
Sub J/B No. 4
4D
4C
DI–1744
–
DIAGNOSTICS
BODY CONTROL SYSTEM
1938
Parking brake switch circuit
CIRCUIT DESCRIPTION
The body ECU determines if the parking brake switch is ON or OFF and sends the parking brake switch ON/
OFF signal to the combination meter via BEAN.
WIRING DIAGRAM
DI29Y–18
–
DIAGNOSTICS
BODY CONTROL SYSTEM
DI–1745
1939
INSPECTION PROCEDURE
HINT:
When using the hand–held tester, start the inspection from step 1 and when not using the hand–held tester,
start from step 2.
1
Check parking brake switch using hand–held tester.
PREPARATION:
(a)
Connect the hand–held tester to the DLC3.
(b)
Turn the ignition switch ON.
CHECK:
According to the display on the tester, read the ”DATA LIST”.
BODY ECU:
Item
Measurement Item/Display
(Range)
Normal Condition
Diagnostic Note
PARKING BRAKE SW
Parking brake switch/ON or OFF
ON:
Parking brake pedal depressed
(ON)
OFF:
Parking brake released (OFF)
–
OK:
The indication on the tester switches between ON and OFF in accordance with the parking
brake switch status.
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
NG
2
Check parking brake switch (See page
NG
Replace parking brake switch.
OK
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