Nissan Leaf. Manual — part 263
C1AA3 STROKE SENSOR
BR-373
< DTC/CIRCUIT DIAGNOSIS >
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2. Connect 12V battery cable to negative terminal.
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.
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 “C1AA3” detected?
YES
>> GO TO 22.
NO
>> INSPECTION END
BR-374
< DTC/CIRCUIT DIAGNOSIS >
C1AA9 PRESSURE SENSOR
C1AA9 PRESSURE SENSOR
DTC Logic
INFOID:0000000010123075
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 “C1AA9” detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010123076
1.
CHECK 12V BATTERY
1. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
DTC
Display item
Malfunction detection condition
Possible causes
C1AA9
PRESSURE SENSOR
A malfunction is detected in the master cylinder pres-
sure sensor.
• Harness or connector
• Master cylinder pressure sen-
sor improper installation
• Master cylinder pressure sen-
sor
• Electrically-driven intelligent
brake unit
C1AA9 PRESSURE SENSOR
BR-375
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
G
H
I
J
K
L
M
A
B
BR
N
O
P
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 while waiting.
3. Check the 12V battery terminal connections. Refer to
BR-6, "Precaution for Removing 12V Battery"
and
.
4. Check the 12V battery. Refer to
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts and GO TO 2.
2.
PERFORM SELF-DIAGNOSIS (1)
With CONSULT
1. Connect 12V battery cable to negative terminal.
2. Turn the power switch OFF to ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
3. Repeat step 2 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
4. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
5. 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.
6. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
7. Start CONSULT and erase self-diagnosis result of “BRAKE”.
8. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
9. 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.
10. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
11. Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
12. Release brake pedal.
13. Start CONSULT and perform “BRAKE” self-diagnosis.
Is DTC “C1AA9” detected?
YES
>> GO TO 3.
NO
>> INSPECTION END
3.
CHECK CONNECTOR TERMINALS
1. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
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 while waiting.
3. Disconnect 12V battery cable from negative terminal. Refer to
BR-6, "Precaution for Removing 12V Bat-
4. Disconnect the electrically-driven intelligent brake unit harness connector, then check for failures of pin
terminals and connections.
5. Check that there is no malfunction in pin terminals and connection of master cylinder pressure sensor har-
ness connector.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts and GO TO 4.
BR-376
< DTC/CIRCUIT DIAGNOSIS >
C1AA9 PRESSURE SENSOR
4.
PERFORM SELF-DIAGNOSIS (2)
With CONSULT
1. Connect the electrically-driven intelligent brake unit harness connector.
2. Connect master cylinder pressure sensor harness connector.
3. Connect 12V battery cable to negative terminal.
4. Turn the power switch OFF to ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
5. Repeat step 4 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
6. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
7. 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.
8. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
9. Erase self-diagnosis result of “BRAKE”.
10. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
11. 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.
12. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
13. Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
14. Release brake pedal.
15. Start CONSULT and perform “BRAKE” self-diagnosis.
Is DTC “C1AA9” detected?
YES
>> GO TO 5.
NO
>> INSPECTION END
5.
CHECK POWER SWITCH ON POWER SUPPLY
1. Connect master cylinder pressure sensor harness connector.
2. Connect 12V battery cable to negative terminal.
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. Disconnect 12V battery cable from negative terminal. Refer to
BR-6, "Precaution for Removing 12V Bat-
6. Disconnect the electrically-driven intelligent brake unit harness connector.
7. Connect 12V battery cable to negative terminal.
8. Check the voltage between the electrically-driven intelligent brake unit harness connector and ground.
9. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
10. Check the voltage between the electrically-driven intelligent brake unit harness connector and ground.
Electrically-driven intelligent brake unit
—
Voltage
(Approx.)
Connector
Terminal
E34
26
Ground
0 V
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