Nissan Leaf. Manual — part 334
BRC-126
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C1176 STOP LAMP SW2
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
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-162, "Removal and Installa-
.
NO
>> Repair or replace error-detected parts. GO TO 11.
11.
CHECK BRAKE PEDAL POSITION SWITCH CIRCUIT (2)
1. Turn the power switch OFF.
2. Disconnect brake pedal position switch switch harness connector.
3. Check the continuity between ABS actuator and electric unit (control unit) harness connector and brake
pedal position switch harness connector.
4. Check the continuity between ABS actuator and electric unit (control unit) harness connector and the
ground.
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. GO TO 12.
12.
CHECK DATA MONITOR (5)
With CONSULT
1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Erase “Self Diagnostic Result” of “ABS”.
3. Turn the power switch OFF
→ ON → OFF.
CAUTION:
Be sure to wait of 10 seconds after turning power switch OFF or ON.
4. Set the vehicle to READY.
CAUTION:
Stop the vehicle.
5. Select “ABS”, “Data Monitor” and “STOP LAMP SW2” according to this order. Check that data monitor dis-
plays “On” or “Off” when brake pedal is depress or release. Refer to
.
ABS actuator and electric unit (control unit)
—
Condition
Voltage
(Approx.)
Connector
Terminal
E35
6
Ground
Brake pedal depressed
0 V
Brake pedal not depressed
0 V
ABS actuator and electric unit (control unit)
—
Condition
Voltage
(Approx.)
Connector
Terminal
E35
6
Ground
Brake pedal depressed
0 V
Brake pedal not depressed
Battery voltage
ABS actuator and electric unit (control unit)
brake pedal position switch
Continuity
Connector
Terminal
Connector
Terminal
E35
6
E112
2
Yes
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E35
6
Ground
No
C1176 STOP LAMP SW2
BRC-127
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
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BRC
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6. Select “ABS”, “Data Monitor” and “PRESS SENSOR” according to this order. Check that data monitor dis-
plays “5 bar” or less when brake pedal is depress. Refer to
.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-162, "Removal and Installa-
.
Component Inspection
INFOID:0000000010120092
1.
CHECK BRAKE PEDAL POSITION SWITCH
1. Turn the power switch OFF.
2. Disconnect brake pedal position switch harness connector.
3. Check the continuity between brake pedal position switch harness connector terminals.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace brake pedal position switch. Refer to
BR-500, "Removal and Installation"
.
Brake pedal position switch
Condition
Continuity
Terminal
1
− 2
When brake pedal position switch is release.
(When brake pedal is slightly depressed.)
No
When brake pedal position switch is pressed.
(When brake pedal is fully released.)
Yes
BRC-128
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C118A ELECTRICALLY-DRIVEN INTELLIGENT BRAKE SYSTEM
C118A ELECTRICALLY-DRIVEN INTELLIGENT BRAKE SYSTEM
DTC Logic
INFOID:0000000010120093
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 “C118A” detected?
YES
>> Proceed to
BRC-128, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010120094
1.
CHECK ELECTRICALLY-DRIVEN INTELLIGENT BRAKE SYSTEM (1)
With CONSULT
Perform “Self Diagnostic Result” of “BRAKE”.
Is any DTC detected?
YES
>> Check the DTC. Refer to
NO
>> GO TO 2.
2.
CHECK CONNECTOR
1. Turn the power switch OFF to exit CONSULT.
2. Close all doors (including back door), check that the room lamp is OFF, get out of the vehicle, and wait for
3 minutes or more with all doors closed.
CAUTION:
Never operate the vehicle and CONSULT while waiting.
3. Disconnect 12V battery cable from negative terminal. Refer to
BRC-5, "Precaution for Removing 12V Bat-
4. Disconnect ABS actuator and electric unit (control unit) harness connector.
5. Disconnect electrically-driven intelligent brake unit harness.
6. Check the 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 3.
3.
CHECK SELF DIAGNOSTIC (1)
DTC
Display Item
Malfunction detected condition
Possible causes
C118A
E-DRIVEN INTELLIGENT
BRAKE SYSTEM
When a malfunction is detected in electrically-driven
intelligent brake system.
• Electrically-driven intelligent
brake unit
• ABS actuator and electric unit
(control unit)
• CAN communication line
C118A ELECTRICALLY-DRIVEN INTELLIGENT BRAKE SYSTEM
BRC-129
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
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BRC
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With CONSULT
1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Connect electrically-driven intelligent brake unit harness.
3. 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.
4. Repeat step 3 two or more times.
5. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “C118A” detected?
YES
>> GO TO 4.
NO
>> Inspection End.
4.
CHECK CAN COMMUNICATION
Check the CAN communication line. Refer to
LAN-17, "Trouble Diagnosis Flow Chart"
.
>> GO TO 5.
5.
CHECK SELF DIAGNOSTIC (2)
With CONSULT
1. Turn the power switch OFF.
2. 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.
3. Repeat step 3 two or more times.
4. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “C118A” detected?
YES
>> GO TO 6.
NO
>> Inspection End.
6.
CHECK ELECTRICALLY-DRIVEN INTELLIGENT BRAKE SYSTEM (2)
With CONSULT
Perform “Self Diagnosis Result” of “BRAKE”.
Is any DTC detected?
YES
>> Check the DTC. Refer to
NO
>> GO TO 7.
7.
CHECK SELF DIAGNOSIS (3)
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 “C118A” detected?
YES
>> GO TO 4.
NO
>> Inspection End.
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