Nissan X-Trail 32. Instruction — part 176
BRC-170
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC (ESP)]
C1197 VACUUM SENSOR
C1197 VACUUM SENSOR
DTC Description
INFOID:0000000010723708
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connector
• Brake vacuum sensor
• Vacuum piping
• ABS actuator and electric unit (control unit)
FAIL-SAFE
Electrical vacuum assistance of brake booster is suspended.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn the ignition 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 ignition switch OFF to ON.
2.
Perform self-diagnosis for “ABS”.
Is DTC “C1197” detected?
YES
>> Proceed to
BRC-170, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010723709
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Check the brake vacuum sensor harness connector for disconnection or looseness.
3.
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, and GO TO 2.
2.
PERFORM SELF-DIAGNOSIS (1)
With CONSULT
1.
Connect the brake vacuum sensor harness connector.
2.
Connect the ABS actuator and electric unit (control unit) harness connector.
3.
Turn the ignition switch ON.
4.
Perform self-diagnosis for “ABS”.
Is DTC “C1197” detected?
YES
>> GO TO 3.
NO
>> INSPECTION END
3.
CHECK BRAKE BOOSTER AND CHECK VALVE
DTC
Display Item
(Trouble diagnosis content)
Malfunction detected condition
C1197
VACUUM SENSOR
(Vacuum sensor)
When a malfunction is detected in brake vacuum sensor.
C1197 VACUUM SENSOR
BRC-171
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC (ESP)]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
1.
Turn the ignition switch OFF.
2.
Check the brake booster and the check valve.
-
BR-38, "Inspection and Adjustment"
-
RHD models: Refer to
BR-100, "Inspection and Adjustment"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>>
Replace the brake booster or the check valve.
BR-36, "Removal and installation"
.
• RHD models: Refer to
BR-99, "Removal and installation"
.
4.
PERFORM SELF-DIAGNOSIS (2)
With CONSULT
1.
Erase self-diagnosis result for “ABS”.
2.
Turn the ignition switch ON.
3.
Perform self-diagnosis for “ABS”.
Is DTC “C1197” detected?
YES
>> GO TO 5.
NO
>> INSPECTION END
5.
CHECK VACUUM PIPING
1.
Turn the ignition switch OFF.
2.
Check the vacuum piping.
-
LHD models
•
.
•
QR25DE: Refer to
•
R9M: Refer to
.
-
RHD models: Refer to
Is the inspection result normal?
YES
>> GO TO 6.
NO
>>
Replace the vacuum piping.
• LHD models
- MR20DD: Refer to
BR-40, "MR20DD : Removal and Installation"
.
- QR25DE: Refer to
BR-41, "QR25DE : Removal and Installation"
- R9M: Refer to
BR-42, "R9M : Removal and Installation"
.
• RHD models: Refer to
BR-102, "Removal and Installation"
6.
PERFORM SELF-DIAGNOSIS (3)
With CONSULT
1.
Erase self-diagnosis result for “ABS”.
2.
Turn the ignition switch ON.
3.
Perform self-diagnosis for “ABS”.
Is DTC “C1197” detected?
YES
>> GO TO 7.
NO
>> INSPECTION END
7.
CHECK TERMINAL
1.
Turn the ignition switch OFF.
2.
Disconnect the brake vacuum sensor harness connector.
3.
Check the brake vacuum sensor pin terminals for damage or loose connection with harness connector.
4.
Disconnect the ABS actuator and electric unit (control unit) harness connector.
5.
Check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with
harness connector.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace error-detected parts.
8.
PERFORM SELF-DIAGNOSIS (4)
With CONSULT
BRC-172
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC (ESP)]
C1197 VACUUM SENSOR
1.
Connect the brake vacuum sensor harness connector.
2.
Connect the ABS actuator and electric unit (control unit) harness connector.
3.
Erase self-diagnosis result for “ABS”.
4.
Turn the ignition switch ON.
5.
Perform self-diagnosis for “ABS”.
Is DTC “C1197” detected?
YES
>> GO TO 9.
NO
>> INSPECTION END
9.
CHECK BRAKE VACUUMSENSOR CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect the brake vacuum sensor harness connector.
3.
Disconnect the ABS actuator and electric unit (control unit) harness connector.
4.
Check the continuity between brake vacuum sensor harness connector and ABS actuator and electric unit
(control unit) harness connector.
5.
Check the continuity between brake vacuum sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace error-detected parts.
10.
REPLACE BRAKE VACUUM SENSOR
With CONSULT
1.
Connect the ABS actuator and electric unit (control unit) harness connector.
2.
Connect the brake vacuum sensor harness connector.
3.
Replace the brake vacuum sensor.
-
LHD models: Refer to
BR-36, "Removal and installation"
-
RHD models: Refer to
BR-99, "Removal and installation"
.
4.
Erase self-diagnosis result for “ABS”.
5.
Turn the ignition switch OFF, and wait 10 seconds or more.
6.
Start the engine.
7.
Perform self-diagnosis for “ABS”.
Is DTC “C1197” detected?
YES
>>
Replace the ABS actuator and electric unit (control unit).
• LHD models: Refer to
BRC-217, "LHD : Removal and Installation"
• RHD models: Refer to
BRC-220, "RHD : Removal and Installation"
.
NO
>> INSPECTION END
Brake vacuum sensor
ABS actuator and electric unit (control unit)
Continuity
Connector
Terminal
Connector
Terminal
E31
1
E36
12
Existed
2
24
3
5
Brake vacuum sensor
—
Continuity
Connector
Terminal
E31
1
Ground
Not existed
2
3
C1198 VACUUM SENSOR
BRC-173
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC (ESP)]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
C1198 VACUUM SENSOR
DTC Description
INFOID:0000000010723710
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connector
• Brake vacuum sensor
• ABS actuator and electric unit (control unit)
FAIL-SAFE
Electrical vacuum assistance of brake booster is suspended.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn the ignition 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 ignition switch OFF to ON.
2.
Perform self-diagnosis for “ABS”.
Is DTC “C1198” detected?
YES
>> Proceed to
BRC-173, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010723711
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Check the brake vacuum sensor harness connector for disconnection or looseness.
3.
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, and GO TO 2.
2.
PERFORM SELF-DIAGNOSIS (1)
With CONSULT
1.
Connect the brake vacuum sensor harness connector.
2.
Connect the ABS actuator and electric unit (control unit) harness connector.
3.
Turn the ignition switch ON.
4.
Perform self-diagnosis for “ABS”.
Is DTC “C1198” detected?
YES
>> GO TO 3.
NO
>> INSPECTION END
3.
CHECK TERMINAL
DTC
Display Item
(Trouble diagnosis content)
Malfunction detected condition
C1198
VACUUM SEN CIR
(Vacuum sensor circuit)
• When an open circuit is detected in vacuum sensor circuit.
• When a short circuit is detected in vacuum sensor circuit.
• When a malfunction is detected in vacuum sensor noise.
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