Nissan Titan. Manual — part 30
C1143, C1144 STEERING ANGLE SENSOR
BRC-61
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
2.
CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).
BRC-9, "CALIBRATION OF DECEL G SENSOR : Description"
>> END
BRC-62
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1155 BRAKE FLUID LEVEL SWITCH
C1155 BRAKE FLUID LEVEL SWITCH
Description
INFOID:0000000009883670
The brake fluid level switch converts the brake fluid level to an electric signal and transmits it to the ABS actu-
ator and electric unit (control unit).
DTC Logic
INFOID:0000000009883671
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> Inspection End
Diagnosis Procedure
INFOID:0000000009883672
Regarding Wiring Diagram information, refer to
1.
CONNECTOR INSPECTION
1. Disconnect ABS actuator and electric unit (control unit) and brake fluid level switch connectors.
2. Check the terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair or replace as necessary.
2.
CHECK HARNESS BETWEEN BRAKE FLUID LEVEL SWITCH AND ABS ACTUATOR AND ELECTRIC
UNIT (CONTROL UNIT)
1. Check continuity between ABS actuator and electric unit (control
unit) connector E125 (A) terminal 8 and brake fluid level switch
connector E21 (B) terminal 1.
2. Check continuity between ABS actuator and electric unit (control
unit) connector E125 (A) terminal 8 and ground.
DTC
Display item
Malfunction detected condition
Possible cause
C1155
BR FLUID LEVEL LOW
Brake fluid level is low or communication line between
the ABS actuator and electric unit (control unit) and brake
fluid level switch is open or shorted.
• Harness or connector
• Brake fluid level switch
• Brake fluid level
Self-diagnosis results
BR FLUID LEVEL LOW
ABS actuator and electric unit
(control unit)
Brake fluid level switch
Continuity
Connector
Terminal
Connector
Terminal
A: E125
8
B: E21
1
Yes
AWFIA0025ZZ
C1155 BRAKE FLUID LEVEL SWITCH
BRC-63
< 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 3
NO
>> Repair or replace malfunctioning components.
3.
CHECK BRAKE FLUID LEVEL SWITCH GROUND
Check continuity between brake fluid level switch connector E21 ter-
minal 2 and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair or replace malfunctioning components.
4.
CHECK BRAKE FLUID LEVEL SWITCH
Perform the brake fluid level switch component inspection. refer to
BRC-63, "Component Inspection"
.
Is the inspection result normal?
YES
>> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit
(control unit). Refer to
BRC-116, "Removal and Installation"
.
NO
>> Replace brake fluid level switch.
Component Inspection
INFOID:0000000009883673
1.
CHECK BRAKE FLUID LEVEL SWITCH
1. Turn ignition switch OFF.
2. Disconnect brake fluid level switch connector.
3. Check continuity between brake fluid level switch terminals.
Is the inspection result normal?
YES
>> Inspection End
NO
>> Replace brake fluid level switch.
Special Repair Requirement
INFOID:0000000009883674
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to
BRC-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
.
>> GO TO 2
2.
CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).
BRC-9, "CALIBRATION OF DECEL G SENSOR : Description"
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
A: E125
8
Ground
No
Brake fluid level switch
—
Continuity
Connector
Terminal
E21
2
Ground
Yes
AWFIA0026ZZ
Brake fluid level switch terminals
Condition
Continuity
1
− 2
Brake fluid reservoir is full.
No
Brake fluid reservoir is empty.
Yes
ALFIA0026ZZ
BRC-64
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1155 BRAKE FLUID LEVEL SWITCH
>> END
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