Infiniti QX56 (Z62). Manual — part 151
C1120, C1122, C1124, C1126 ABS IN VALVE SYSTEM
BRC-89
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
YES
>> Perform trouble diagnosis for battery power supply. Refer to
PG-11, "Wiring Diagram - BATTERY
NO
>> Repair or replace error-detected parts.
3.
CHECK ABS IN VALVE GROUND CIRCUIT
1.
Turn the ignition switch OFF.
2.
Check continuity between ABS actuator and electric unit (control unit) harness connector and the ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK TERMINAL
Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness
connector.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-137, "Removal and Installa-
.
NO
>> Repair or replace error-detected parts.
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E36
2
Ground
Existed
3
E37
48
BRC-90
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C1121, C1123, C1125, C1127 ABS OUT VALVE SYSTEM
C1121, C1123, C1125, C1127 ABS OUT VALVE SYSTEM
DTC Logic
INFOID:0000000006222611
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn the ignition switch OFF to ON.
2.
Perform self-diagnosis for “ABS”.
Is DTC “C1121”, “C1123”, “C1125” or “C1127” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006222612
1.
CHECK ABS OUT VALVE 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 OUT VALVE POWER SUPPLY CIRCUIT
1.
Turn the ignition switch OFF.
2.
Check 30A fusible link (L).
3.
Check continuity and short circuit between ABS actuator and electric unit (control unit) harness connector
terminal (1) and 30A fusible link (L).
Is the inspection result normal?
DTC
Display Item
Malfunction detected condition
Possible causes
C1121
FR LH OUT ABS SOL
When a malfunction is detected in front LH ABS OUT
valve.
• Harness or connector
• ABS actuator and electric unit
(control unit)
• Fusible link
• Battery power supply system
C1123
FR RH OUT ABS SOL
When a malfunction is detected in front RH ABS OUT
valve.
C1125
RR LH OUT ABS SOL
When a malfunction is detected in rear LH ABS OUT
valve.
C1127
RR RH OUT ABS SOL
When a malfunction is detected in rear RH ABS OUT
valve.
ABS actuator and electric unit (control unit)
—
Voltage
Connector
Terminal
E36
1
Ground
Battery voltage
ABS actuator and electric unit (control unit)
—
Voltage
Connector
Terminal
E36
1
Ground
Battery voltage
C1121, C1123, C1125, C1127 ABS OUT VALVE SYSTEM
BRC-91
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
YES
>> Perform trouble diagnosis for battery power supply. Refer to
PG-11, "Wiring Diagram - BATTERY
NO
>> Repair or replace error-detected parts.
3.
CHECK ABS OUT VALVE GROUND CIRCUIT
1.
Turn the ignition switch OFF.
2.
Check continuity between ABS actuator and electric unit (control unit) harness connector and the ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK TERMINAL
Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness
connector.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-137, "Removal and Installa-
.
NO
>> Repair or replace error-detected parts.
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E36
2
Ground
Existed
3
E37
48
BRC-92
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C1130 ENGINE SIGNAL
C1130 ENGINE SIGNAL
DTC Logic
INFOID:0000000006222613
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn the ignition switch OFF to ON.
2.
Perform self-diagnosis for “ABS”.
Is DTC “C1130” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006222614
1.
CHECK ENGINE SYSTEM
With CONSULT-III.
Perform self-diagnosis for “ENGINE”.
Is any DTC detected?
YES
>> Check the DTC.
NO
>> GO TO 2.
2.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
With CONSULT-III.
1.
Erase Self-diagnosis result for “ABS”.
2.
Turn the ignition switch OFF.
3.
Start the engine and drive the vehicle for a short period of time.
4.
Check that the malfunction indicator lamp (MIL) turns OFF.
5.
After the vehicle stops, perform self-diagnosis for “ABS”.
Is DTC “C1130” detected?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-137, "Removal and Installa-
.
NO
>> Check pin terminals and connection of each harness connector for abnormal conditions. Repair or
replace error-detected parts.
DTC
Display Item
Malfunction detected condition
Possible causes
C1130
ENGINE SIGNAL 1
When a malfunction is detected in ECM system.
• ECM
• ABS actuator and electric unit
(control unit)
• CAN communication line
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