Infiniti G37 Coupe. Manual — part 273
BRC-66
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
C1147, C1148, C1149, C1150 USV/HSV LINE
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to diagnosis procedure. Refer to
Special Repair Requirement
INFOID:0000000001635114
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-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
>> END
C1155 BRAKE FLUID LEVEL SWITCH
BRC-67
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
C1155 BRAKE FLUID LEVEL SWITCH
Description
INFOID:0000000001635115
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:0000000001635116
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:0000000001635117
1.
CHECK CONNECTOR
1.
Turn ignition switch OFF.
2.
Disconnect brake fluid level switch connector and unified meter and A/C amp. connector.
3.
Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.
4.
Reconnect connectors and then perform the self-diagnosis.
Is any item indicated on the self-diagnosis display?
YES
>> GO TO 2.
NO
>> Poor connection of connector terminal. Repair or replace connector.
2.
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 connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Brake fluid level switch is malfunction. Replace reservoir tank.
3.
CHECK BRAKE FLUID LEVEL SWITCH CIRCUIT
1.
Disconnect unified meter and A/C amp. connector.
2.
Check continuity between brake fluid level switch harness connector terminals, unified meter and A/C
amp. harness connector terminal and/or 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
• Unified meter and A/C amp.
Self-diagnosis results
BR FLUID LEVEL LOW
Brake fluid level switch
Condition
Continuity
Connector
Terminal
E47
1
−
2
When brake fluid is full in the reservoir tank.
Not existed
When brake fluid is empty in the reservoir tank.
Existed
BRC-68
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
C1155 BRAKE FLUID LEVEL SWITCH
Is the inspection result normal?
YES
>> Replace unified meter and A/C amp.
NO
>> Repair or replace malfunctioning components.
Component Inspection
INFOID:0000000001635118
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 connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace reservoir tank.
Special Repair Requirement
INFOID:0000000001635119
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-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
>> END
Unified meter and A/C amp.
Brake fluid level switch
Continuity
Connector
Terminal
Connector
Terminal
M67
57
E47
1
Existed
Unified meter and A/C amp.
—
Continuity
Connector
Terminal
M67
57
Ground
Not existed
Brake fluid level switch
—
Continuity
Connector
Terminal
E47
2
Ground
Existed
Brake fluid level switch
Condition
Continuity
Connector
Terminal
E47
1
−
2
When brake fluid is full in the reservoir tank.
Not existed
When brake fluid is empty in the reservoir tank.
Existed
C1185 ICC UNIT
BRC-69
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
C1185 ICC UNIT
Description
INFOID:0000000001751278
The ABS actuator and electric unit (control unit) and the ICC sensor integrated unit exchange signals via the
CAN communication line.
DTC Logic
INFOID:0000000001751279
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:0000000001751280
1.
CHECK ICC SENSOR INTEGRATED UNIT CIRCUIT
Perform ICC sensor integrated unit self-diagnosis.
Is any item indicated on the self-diagnosis display?
YES
>> Repair or replace malfunction components.
NO
>> GO TO 2.
2.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is any item indicated on the self-diagnosis display?
YES
>> Repair or replace malfunction components.
NO
>> INSPECTION END
Special Repair Requirement
INFOID:0000000001751282
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-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
>> END
DTC
Display item
Malfunction detected condition
Possible cause
C1185
ACC CONT
ICC sensor integrated unit internal malfunction.
• Harness or connector
• ICC sensor integrated unit
• ABS actuator and electric unit
(control unit)
• CAN communication line
Self-diagnosis results
ACC CONT
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