Nissan Pathfinder. Manual — part 259
C1197 VACUUM SENSOR
BRC-95
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace malfunctioning components.
4.
CHECK TERMINAL
• Check vacuum sensor pin terminals for damage or loose connection with harness connector.
• Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with har-
ness connector.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace malfunctioning components.
5.
REPLACE VACUUM SENSOR
With CONSULT
1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Replace vacuum sensor. Refer to
BR-31, "Removal and Installation"
.
CAUTION:
Always replace brake booster because vacuum sensor cannot be disassembled.
3. Erase self-diagnosis result for “ABS”.
4. Turn the ignition switch OFF.
5. Start engine.
6. Perform self-diagnosis for “ABS”.
Is DTC “C1197” detected?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-123, "Removal and Installa-
.
NO
>> Inspection End.
Vacuum sensor
—
Continuity
Connector
Terminal
E167
1
Ground
No
2
3
BRC-96
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1198 VACUUM SENSOR
C1198 VACUUM SENSOR
DTC Logic
INFOID:0000000009177310
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULT
With
CONSULT.
1. Turn the ignition switch ON.
2. Perform self-diagnostic result.
Is DTC C1198 detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009177311
Regarding Wiring Diagram information, refer to
1.
CHECK VACUUM SENSOR CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect vacuum sensor harness connector.
3. Disconnect ABS actuator and electric unit (control unit) harness connector.
4. Check continuity between vacuum sensor harness connector and ABS actuator and electric unit (control
unit) harness connector.
5. Check continuity between vacuum sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning components.
2.
CHECK TERMINAL
DTC
Display Item
Malfunction detected condition
Possible causes
C1198
VACUUM SEN CIR
• 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.
• Harness or connector
• Vacuum sensor (brake booster)
• ABS actuator and electric unit
(control unit)
Vacuum sensor
ABS actuator and electric unit (control unit)
Continuity
Connector
Terminal
Connector
Terminal
E167
1
E125
13
Yes
2
32
3
28
Vacuum sensor
—
Continuity
Connector
Terminal
E167
1
Ground
No
2
3
C1198 VACUUM SENSOR
BRC-97
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
• Check vacuum sensor pin terminals for damage or loose connection with harness connector.
• Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with har-
ness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning components.
3.
REPLACE VACUUM SENSOR
With CONSULT
1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Replace vacuum sensor. Refer to
BR-31, "Removal and Installation"
.
CAUTION:
Always replace brake booster because vacuum sensor cannot be disassembled.
3. Erase self-diagnosis result for “ABS”.
4. Turn the ignition switch OFF.
5. Start engine.
6. Perform self-diagnosis for “ABS”.
Is DTC “C1198” detected?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-123, "Removal and Installa-
.
NO
>> Inspection End.
BRC-98
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1199 BRAKE BOOSTER
C1199 BRAKE BOOSTER
DTC Logic
INFOID:0000000009177312
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULT
With
CONSULT.
1. Turn the ignition switch ON.
2. Perform self-diagnostic result.
Is DTC C1199 detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009177313
Regarding Wiring Diagram information, refer to
1.
CHECK BRAKE BOOSTER
1. Turn the ignition switch OFF.
2. Check brake booster. Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace brake booster. Refer to
BR-31, "Removal and Installation"
.
2.
CHECK VACUUM PIPING
Check vacuum piping. Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace vacuum piping. Refer to
BR-33, "Removal and Installation"
.
3.
CHECK VACUUM SENSOR CIRCUIT
1. Disconnect vacuum sensor harness connector.
2. Disconnect ABS actuator and electric unit (control unit) harness connector.
3. Check continuity between vacuum sensor harness connector and ABS actuator and electric unit (control
unit) harness connector.
4. Check continuity between vacuum sensor harness connector and ground.
DTC
Display Item
Malfunction detected condition
Possible causes
C1199
BRAKE BOOSTER
When brake booster vacuum is approx. 0 kPa (0 mm-
Hg) during engine running.
• Harness or connector
• Vacuum sensor (brake booster)
• Vacuum piping
• ABS actuator and electric unit
(control unit)
Vacuum sensor
ABS actuator and electric unit (control unit)
Continuity
Connector
Terminal
Connector
Terminal
E167
1
E125
13
Yes
2
32
3
28
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