Nissan Leaf. Instruction — part 333
BRC-122
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C1166, C1167 SV SYSTEM
NO
>> Inspection End.
3.
CHECK SUCTION 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 SUCTION 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 SUCTION 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
C1176 STOP LAMP SW2
BRC-123
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
C1176 STOP LAMP SW2
DTC Logic
INFOID:0000000010120090
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, and wait 10 seconds or more.
2. Set the vehicle to READY.
CAUTION:
Stop the vehicle.
3. Depress the brake pedal several time.
4. 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.
5. Repeat step 4 two or more times.
6. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “C1176” detected?
YES
>> Proceed to
BRC-123, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010120091
Regarding Wiring Diagram information. Refer to
NOTE:
DTC “C1176” may be detected when the brake pedal and the accelerator pedal are simultaneously depressed
for 1 minute or more while driving the vehicle. This is not a malfunction.
1.
INTERVIEW FROM THE CUSTOMER
Check if the brake pedal and the accelerator pedal are simultaneously depressed for 1 minute or more while
driving the vehicle.
Is there such a history?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
PERFORM SELF DIAGNOSTIC
DTC
Display item
Malfunction detected condition
Possible cause
C1176
STOP LAMP SW2
When brake pedal position switch signal is not input
when brake pedal operates.
• Harness or connector
• Brake pedal position switch
• ABS actuator and electric unit
(control unit)
• Power switch ON power sup-
ply system
BRC-124
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C1176 STOP LAMP SW2
With CONSULT
1. Erase “Self Diagnostic Result” of “ABS”.
2. Turn the power switch OFF
→ ON → OFF.
CAUTION:
Be sure to wait of 10 seconds after turning power switch OFF or ON.
3. Set the vehicle to READY.
CAUTION:
Stop the vehicle.
4. Depress the brake pedal several times.
5. 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.
6. Repeat step 5 two or more times.
7. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “C1176” detected?
YES
>> GO TO 3.
NO
>> Inspection End.
3.
CHECK DATA MONITOR (1)
With CONSULT
1. Erase “Self Diagnostic Result” of “ABS”.
2. Turn the power switch OFF
→ ON → OFF.
CAUTION:
Be sure to wait of 10 seconds after turning power switch OFF or ON.
3. Set the vehicle to READY.
CAUTION:
Stop the vehicle.
4. 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
.
5. 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
>> GO TO 4.
4.
CHECK BRAKE PEDAL POSITION SWITCH CLEARANCE
1. Turn the power switch OFF.
2. Check the brake pedal position switch clearance. Refer to
BR-490, "Inspection and Adjustment"
.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Adjust brake pedal position switch clearance. Refer to
BR-490, "Inspection and Adjustment"
. GO
TO 5.
5.
CHECK DATA MONITOR (2)
With CONSULT
1. Erase “Self Diagnostic Result” of “ABS”.
2. Turn the power switch OFF, and wait 10 seconds or more.
3. Set the vehicle to READY.
CAUTION:
Stop the vehicle.
4. 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
.
5. 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
>> GO TO 6.
C1176 STOP LAMP SW2
BRC-125
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
6.
CHECK BRAKE PEDAL POSITION SWITCH
Check the brake pedal position switch. Refer to
BRC-127, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace brake pedal position switch. Refer to
BR-500, "Removal and Installation"
. GO TO 7.
7.
CHECK DATA MONITOR (3)
With CONSULT
1. Erase “Self Diagnostic Result” of “ABS”.
2. Turn the power switch OFF
→ ON → OFF.
CAUTION:
Be sure to wait of 10 seconds after turning power switch OFF or ON.
3. Turn the power switch ON.
CAUTION:
Never set the vehicle to READY.
4. 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
5. 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
>> GO TO 8.
8.
CHECK CONNECTOR AND TERMINAL
1. Turn the power switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) harness connector.
3. Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
4. Check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with
harness connector.
5. Disconnect brake pedal position switch harness connector.
6. Check the brake pedal position switch harness connector for disconnection or looseness.
7. Check the brake pedal position switch pin terminals for damage or loose connection with harness connec-
tor.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace error-detected parts. GO TO 9.
9.
CHECK DATA MONITOR (4)
With CONSULT
1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Connect brake pedal position switch harness connector.
3. Erase “Self Diagnosis Result” of “ABS”.
4. Turn the power switch OFF
→ ON → OFF.
CAUTION:
Be sure to wait of 10 seconds after turning power switch OFF or ON.
5. Set the vehicle to READY.
CAUTION:
Stop the vehicle.
6. 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
7. 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
>> GO TO 10.
10.
CHECK BRAKE PEDAL POSITION SWITCH CIRCUIT (1)
1. Turn the power switch OFF.
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