Nissan Leaf. Manual — part 328
BRC-102
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C1120, C1122, C1124, C1126 ABS IN VALVE SYSTEM
Is DTC “C1120”, “C1122”, “C1124” or “C1126” detected?
YES
>> GO TO 3.
NO
>> Inspection End.
3.
CHECK ABS IN VALVE POWER SUPPLY
1. Turn the power switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) harness connector.
3. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.
4. Turn the power switch ON.
CAUTION:
Never set the vehicle to READY.
5. Check the 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 IN VALVE POWER SUPPLY CIRCUIT
1. Turn the power switch OFF.
2. Check the 50A fusible link (#J).
3. Check the continuity and short circuit between ABS actuator and electric unit (control unit) harness con-
nector terminal (2) and 50A fusible link (#J).
Is the inspection result normal?
YES
>> Perform trouble diagnosis for 12V battery power supply. Refer to
.
NO
>> Repair or replace error-detected parts.
5.
CHECK ABS IN VALVE GROUND CIRCUIT
1. Turn the power switch OFF.
2. Check the continuity between ABS actuator and electric unit (control unit) harness connector and the
ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
CHECK TERMINAL
Check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with har-
ness connector.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-162, "Removal and Installa-
.
NO
>> Repair or replace error-detected parts.
ABS actuator and electric unit (control unit)
—
Voltage
(Approx.)
Connector
Terminal
E35
2
Ground
Battery voltage
ABS actuator and electric unit (control unit)
—
Voltage
(Approx.)
Connector
Terminal
E35
2
Ground
Battery voltage
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E35
3
Ground
Yes
4
C1121, C1123, C1125, C1127 ABS OUT VALVE SYSTEM
BRC-103
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
C1121, C1123, C1125, C1127 ABS OUT VALVE SYSTEM
DTC Logic
INFOID:0000000010120073
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn power switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT
1. Turn the power switch OFF
→ ON.
CAUTION:
• Be sure to wait of 10 seconds after turning power switch OFF or ON.
• Set the vehicle to READY.
2. Repeat step 1 two or more times.
3. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “C1121”, “C1123”, “C1125” or “C1127” detected?
YES
>> Proceed to
BRC-103, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010120074
Regarding Wiring Diagram information. Refer to
1.
CHECK CONNECTOR
1. Turn the power switch OFF.
2. Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts, securely lock the connector, and GO TO 2.
2.
PERFORM SELF DIAGNOSIS
With CONSULT
1. Turn the power switch OFF
→ ON.
CAUTION:
• Be sure to wait of 10 seconds after turning power switch OFF or ON.
• Set the vehicle to READY.
2. Repeat step 1 two or more times.
3. Perform “Self Diagnostic Result” of “ABS”.
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
• 12V battery power supply sys-
tem
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.
BRC-104
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C1121, C1123, C1125, C1127 ABS OUT VALVE SYSTEM
Is DTC “C1121”, “C1123”, “C1125” or “C1127” detected?
YES
>> GO TO 3.
NO
>> Inspection End.
3.
CHECK ABS OUT VALVE POWER SUPPLY
1. Turn the power switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) harness connector.
3. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.
4. Turn the power switch ON.
CAUTION:
Never set the vehicle to READY.
5. Check the 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 OUT VALVE POWER SUPPLY CIRCUIT
1. Turn the power switch OFF.
2. Check the 50A fusible link (#J).
3. Check the continuity and short circuit between ABS actuator and electric unit (control unit) harness con-
nector terminal (2) and 50A fusible link (#J).
Is the inspection result normal?
YES
>> Perform trouble diagnosis for 12V battery power supply. Refer to
.
NO
>> Repair or replace error-detected parts.
5.
CHECK ABS OUT VALVE GROUND CIRCUIT
1. Turn the power switch OFF.
2. Check the continuity between ABS actuator and electric unit (control unit) harness connector and the
ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
CHECK TERMINAL
Check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with har-
ness connector.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-162, "Removal and Installa-
.
NO
>> Repair or replace error-detected parts.
ABS actuator and electric unit (control unit)
—
Voltage
(Approx.)
Connector
Terminal
E35
2
Ground
Battery voltage
ABS actuator and electric unit (control unit)
—
Voltage
(Approx.)
Connector
Terminal
E35
2
Ground
Battery voltage
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E35
3
Ground
Yes.
4
C1140 ACTUATOR RELAY SYSTEM
BRC-105
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
C1140 ACTUATOR RELAY SYSTEM
DTC Logic
INFOID:0000000010120075
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn power switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT
1. Turn the power switch OFF
→ ON.
CAUTION:
• Be sure to wait of 10 seconds after turning power switch OFF or ON.
• Set the vehicle to READY.
2. Repeat step 1 two or more times.
3. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “C1140” detected?
YES
>> Proceed to
BRC-105, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010120076
Regarding Wiring Diagram information. Refer to
1.
CHECK CONNECTOR
1. Turn the power switch OFF.
2. Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts, securely lock the connector, and GO TO 2.
2.
PERFORM SELF DIAGNOSIS
With CONSULT
1. Turn the power switch OFF
→ ON.
CAUTION:
• Be sure to wait of 10 seconds after turning power switch OFF or ON.
• Set the vehicle to READY.
2. Repeat step 1 two or more times.
3. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “C1140” detected?
YES
>> GO TO 3.
NO
>> Inspection End.
DTC
Display Item
Malfunction detected condition
Possible causes
C1140
ACTUATOR RLY
When a malfunction is detected in actuator relay.
• Harness or connector
• ABS actuator and electric unit
(control unit)
• Fusible link
• 12V battery power supply sys-
tem
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