Nissan Teana J32. Manual — part 262
BRC-106
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
C1140 ACTUATOR RELAY SYSTEM
C1140 ACTUATOR RELAY SYSTEM
Description
INFOID:0000000003766924
Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and
electric unit (control unit).
DTC Logic
INFOID:0000000003766925
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
1.
Turn the ignition switch ON.
2.
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1140” detected?
YES
>> Proceed to diagnosis procedure. Refer to
BRC-106, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003766926
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect ABS actuator and electric unit (control unit) connector.
3.
Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts.
2.
CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT
Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT
Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.
DTC
Display item
Malfunction detected condition
Possible cause
C1140
ACTUATOR RLY
During the actuator relay operating with OFF, when the
actuator relay turns ON, or when the control line for the
relay is shorted to the ground.
• Harness or connector
• ABS actuator and electric unit
(control unit)
During the actuator relay operating with ON, when the
actuator relay turns ON, or when the control line for the
relay is open.
ABS actuator and electric unit (control unit)
—
Voltage
Connector
Terminal
E36
3
Ground
Battery voltage
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E36
1
Ground
Existed
4
C1140 ACTUATOR RELAY SYSTEM
BRC-107
< COMPONENT 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
>> Replace ABS actuator and electric unit (control unit).
NO
>> Repair or replace damaged parts.
Component Inspection
INFOID:0000000003767346
1.
CHECK ACTIVE TEST
1.
On “ACTIVE TEST”, select “ABS MOTOR”.
2.
Touch “On” and “Off” on screen. Make sure motor relay and actuator relay operates as shown in table
below.
NOTE:
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is
an operation for checking.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to diagnosis procedure. Refer to
BRC-106, "Diagnosis Procedure"
Special Repair Requirement
INFOID:0000000003767344
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to
BRC-66, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
>> END
Test item
Display item
Display
On
Off
ABS MOTOR
MOTOR RELAY
On
Off
ACTUATOR RLY (Note)
On
On
BRC-108
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
C1142 PRESS SENSOR
C1142 PRESS SENSOR
Description
INFOID:0000000003766953
The pressure sensor converts the brake fluid pressure to an electric signal and transmits it to the ABS actuator
and electric unit (control unit). [The pressure sensor is integrated in the ABS actuator and electric unit (control
unit).]
DTC Logic
INFOID:0000000003766954
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
1.
Turn the ignition switch ON.
2.
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1142” detected?
YES
>> Proceed to diagnosis procedure. Refer to
BRC-108, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003766955
1.
CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunction component.
2.
CHECK DATA MONITOR
Check pressure sensor signal. Refer to
BRC-108, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> • Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake system
fluid leakage, etc.
- Brake pedal: Refer to
BR-6, "Inspection and Adjustment"
.
- Brake booster: Refer to
- Brake master cylinder: Refer to
3.
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is any item indicated on the self-diagnosis display?
YES
>> Replace ABS actuator and electric unit (control unit).
NO
>> Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection
with harness connector. If any items are damaged, repair or replace damaged parts.
Component Inspection
INFOID:0000000003766956
1.
CHECK DATA MONITOR
On “DATA MONITOR”, select “PRESS SENSOR” and check the brake fluid pressure.
DTC
Display item
Malfunction detected condition
Possible cause
C1142
PRESS SEN CIRCUIT
Pressure sensor signal line is open or shorted, or pres-
sure sensor is malfunctioning.
• Harness or connector
• Stop lamp switch
• ABS actuator and electric unit
(control unit)
C1142 PRESS SENSOR
BRC-109
< COMPONENT 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
>> INSPECTION END
NO
>> Proceed to diagnosis procedure. Refer to
BRC-108, "Diagnosis Procedure"
Special Repair Requirement
INFOID:0000000003767345
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to
BRC-66, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
>> END
Condition
PRESS SENSOR
(DATA MONITOR)
With ignition switch turned ON and brake pedal released.
Approx. 0 bar
With ignition switch turned ON and brake pedal depressed.
−
40 to 300 bar
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