Nissan Quest E52. Instruction — part 252
POWER SUPPLY AND GROUND CIRCUIT
BRC-101
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000009651424
1.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) IGNITION POWER SUPPLY
1.
Turn the ignition switch OFF.
2.
Disconnect ABS actuator and electric unit (control unit) harness connector.
3.
Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
4.
Turn the ignition switch ON
CAUTION:
Never start engine.
5.
Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) IGNITION POWER SUPPLY CIRCUIT
1.
Turn the ignition switch OFF.
2.
Check 10 A fuse (#45).
3.
Disconnect IPDM E/R harness connector.
4.
Check continuity between ABS actuator and electric unit (control unit) harness connector and IPDM E/R
harness connector.
5.
Check for continuity between ABS actuator and electric unit (control unit) harness connector and the
ground.
Is the inspection result normal?
YES
>> Perform trouble diagnosis for ignition power supply. Refer to
PG-54, "Wiring Diagram - IGNITION
NO
>> Repair or replace error-detected parts.
3.
CHECK MOTOR AND MOTOR RELAY POWER SUPPLY
1.
Turn the ignition switch OFF.
2.
Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
ABS actuator and electric unit (control unit)
—
Voltage
Connector
Terminal
E36
20
Ground
Approx. 0 V
ABS actuator and electric unit (control unit)
—
Voltage
Connector
Terminal
E36
20
Ground
10
−
16 V
ABS actuator and electric unit (control unit)
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
E36
20
E10
25
Existed
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E36
20
Ground
Not existed
ABS actuator and electric unit (control unit)
—
Voltage
Connector
Terminal
E36
14
Ground
10
−
16 V
BRC-102
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
POWER SUPPLY AND GROUND CIRCUIT
3.
Turn the ignition switch ON.
CAUTION:
Never start engine.
4.
Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT
1.
Turn the ignition switch OFF.
2.
Check 30 A fusible link (#F).
3.
Check continuity and short circuit between ABS actuator and electric unit (control unit) harness connector
terminal (14) and 30 A fusible link (#F).
Is the inspection result normal?
YES
>> Perform trouble diagnosis for battery power supply. Refer to
PG-11, "Wiring Diagram - BATTERY
NO
>> Repair or replace error-detected parts.
5.
CHECK ACTUATOR RELAY, ABS IN VALVE, ABS OUT VALVE, CUT VALVE, SUCTION VALVE POWER
SUPPLY
1.
Turn the ignition switch OFF.
2.
Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
3.
Turn the ignition switch ON
CAUTION:
Never start engine.
4.
Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
CHECK ACTUATOR RELAY, ABS IN VALVE, ABS OUT VALVE, CUT VALVE, SUCTION VALVE POWER
SUPPLY CIRCUIT
1.
Turn the ignition switch OFF.
2.
Check 20 A fusible link (#G).
3.
Check continuity and short circuit between ABS actuator and electric unit (control unit) harness connector
terminal (1) and 20 A fusible link (#G).
Is the inspection result normal?
YES
>> Perform trouble diagnosis for battery power supply. Refer to
PG-11, "Wiring Diagram - BATTERY
NO
>> Repair or replace error-detected parts.
7.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check for continuity between ABS actuator and electric unit (control unit) harness connector and the ground.
ABS actuator and electric unit (control unit)
—
Voltage
Connector
Terminal
E36
14
Ground
10
−
16 V
ABS actuator and electric unit (control unit)
—
Voltage
Connector
Terminal
E36
1
Ground
10
−
16 V
ABS actuator and electric unit (control unit)
—
Voltage
Connector
Terminal
E36
1
Ground
10
−
16 V
POWER SUPPLY AND GROUND CIRCUIT
BRC-103
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace error-detected parts.
8.
CHECK TERMINAL
1.
Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with har-
ness connector.
2.
Check IPDM E/R pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace error-detected parts.
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E36
13
Ground
Existed
26
BRC-104
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
PARKING BRAKE SWITCH
PARKING BRAKE SWITCH
Component Function Check
INFOID:0000000009651425
1.
CHECK PARKING BRAKE SWITCH OPERATION
Operate the parking brake pedal. Then check that the brake warning lamp in the combination meter turns ON/
OFF correctly.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
BRC-104, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000009651426
1.
CHECK PARKING BRAKE SWITCH CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect parking brake switch harness connector.
3.
Disconnect combination meter harness connector.
4.
Check continuity between parking brake switch harness connector and combination meter harness con-
nector.
5.
Check continuity between parking brake switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK PARKING BRAKE SWITCH
Check the parking brake switch. Refer to
BRC-104, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace parking brake switch. Refer to
PB-6, "Removal and Installation"
3.
CHECK COMBINATION METER
Check combination meter. Refer to
Is the inspection result normal?
YES
>> Check each pin terminals for damage or loose connection with harness connector. If any items
are damaged, repair or replace error-detected parts.
NO
>> Repair or replace combination meter. Refer to
MWI-93, "Removal and Installation"
Component Inspection
INFOID:0000000009651427
1.
CHECK PARKING BRAKE SWITCH
1.
Turn the ignition switch OFF.
2.
Disconnect parking brake switch harness connector.
3.
Check continuity between parking brake switch harness connector.
Parking brake switch
Combination meter
Continuity
Connector
Terminal
Connector
Terminal
E27
1
M34
26
Existed
Parking brake switch
—
Continuity
Connector
Terminal
E27
1
Ground
Not existed
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