Nissan Leaf. Manual — part 265
C1AA9 PRESSURE SENSOR
BR-381
< DTC/CIRCUIT DIAGNOSIS >
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2. Repeat step 1 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
3. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
4. 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 while waiting.
5. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
6. Start CONSULT and erase self-diagnosis result of “BRAKE”.
7. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
8. 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 while waiting.
9. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
10. Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
11. Release brake pedal.
12. Start CONSULT and perform “BRAKE” self-diagnosis.
Is DTC “C1AA9” detected?
YES
>> GO TO 15.
NO
>> INSPECTION END
15.
CHECK MASTER CYLINDER PRESSURE SENSOR INSTALLATION
1. Turn the power switch OFF to exit CONSULT.
2. Check the master cylinder pressure sensor for looseness and disconnection. Refer to
.
Is the inspection result normal?
YES
>> GO TO 16.
NO
>> Repair or replace error-detected parts and GO TO 16.
16.
PERFORM SELF-DIAGNOSIS (7)
With CONSULT
1. Turn the power switch OFF to ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
2. Repeat step 1 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
3. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
4. 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 while waiting.
5. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
6. Start CONSULT and erase self-diagnosis result of “BRAKE”.
7. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
8. 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 while waiting.
9. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
BR-382
< DTC/CIRCUIT DIAGNOSIS >
C1AA9 PRESSURE SENSOR
10. Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
11. Release brake pedal.
12. Start CONSULT and perform “BRAKE” self-diagnosis.
Is DTC “C1AA9” detected?
YES
>> GO TO 17.
NO
>> INSPECTION END
17.
CHECK MASTER CYLINDER PRESSURE SENSOR CIRCUIT
1. Turn the power switch OFF to exit CONSULT.
2. Disconnect master cylinder pressure sensor harness connector.
3. Disconnect the ABS actuator and electric unit (control unit) harness connector.
4. Check the continuity between master cylinder pressure sensor harness connector and ABS actuator and
electric unit (control unit) harness connector harness connector. Refer to
Is the inspection result normal?
YES
>> GO TO 18.
NO
>> Repair or replace error-detected parts and GO TO 20.
18.
CHECK MASTER CYLINDER PRESSURE SENSOR POWER CIRCUIT
Check the master cylinder pressure sensor power voltage. Refer to
BRC-107, "Diagnosis Procedure"
Is the inspection result normal?
YES
>> GO TO 19.
NO
>> Repair or replace error-detected parts and GO TO 20.
19.
CHECK DATA MONITOR (2)
With CONSULT
1. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
2. Connect master cylinder pressure sensor harness connector.
3. Connect ABS actuator and electric unit (control unit) harness connector.
4. 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 while waiting.
5. Disconnect 12V battery cable from negative terminal. Refer to
BR-6, "Precaution for Removing 12V Bat-
6. Connect 12V battery cable to negative terminal.
7. Turn the power switch OFF to ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
8. Repeat step 7 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
9. Start CONSULT and select “BRAKE” and “DATA MONITOR” according this order.
10. Check the “MASTER CYL PRESSURE”. Refer to
Is the inspection result normal?
YES
>> GO TO 20.
NO
>> Check the ABS actuator and electric unit (control unit). Refer to
20.
PERFORM SELF-DIAGNOSIS (8)
With CONSULT
1. Connect master cylinder pressure sensor harness connector.
2. Connect ABS actuator and electric unit (control unit) harness connector.
3. Turn the power switch OFF to ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
4. Repeat step 3 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
5. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
C1AA9 PRESSURE SENSOR
BR-383
< DTC/CIRCUIT DIAGNOSIS >
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6. 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 while waiting.
7. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
8. Start CONSULT and erase self-diagnosis result of “BRAKE”.
9. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
10. 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 while waiting.
11. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
12. Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
13. Release brake pedal.
14. Start CONSULT and perform “BRAKE” self-diagnosis.
Is DTC “C1AA9” detected?
YES
>> GO TO 21.
NO
>> INSPECTION END
21.
CHECK MASTER CYLINDER PRESSURE SENSOR
1. Disconnect master cylinder pressure sensor harness connector.
2. Check that the voltage between master cylinder pressure sensor harness connector changes with the
depth of pedal depression.
Is the inspection result normal?
YES
>> Replace the electrically-driven intelligent brake unit. Refer to
BR-510, "Removal and installation"
NO
>> Check the ABS actuator and electric unit (control unit). Refer to
BR-384
< DTC/CIRCUIT DIAGNOSIS >
C1AB8 MOTOR
C1AB8 MOTOR
DTC Logic
INFOID:0000000010123077
DTC DETECTION LOGIC
DTC REPRODUCTION 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 to ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
2. Repeat step 1 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
3. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
4. 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 while waiting.
5. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
6. Start CONSULT and erase self-diagnosis result of “BRAKE”.
7. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
8. 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 while waiting.
9. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
10. Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
11. Release brake pedal.
12. Start CONSULT and perform “BRAKE” self-diagnosis.
Is DTC “C1AB8” detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
DTC
Display item
Malfunction detection condition
Possible causes
C1AB8
MOTOR-2
• Temperature of motor that is integrated with electri-
cally-driven intelligent brake unit is as shown below.
- Motor temperature:
−50°C (−122°F) ≥ Motor tem-
perature
- Motor temperature: 115
°C (239°F) ≤ Motor temper-
ature
• A malfunction is detected in the temperature detec-
tion circuit of the motor that is integrated with the
electrically-driven intelligent brake unit.
Electrically-driven intelligent
brake unit
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