Infiniti EX35. Manual — part 339
C1155 BRAKE FLUID LEVEL SWITCH
BRC-71
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
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H
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A
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BRC
N
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C1155 BRAKE FLUID LEVEL SWITCH
Description
INFOID:0000000003132951
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:0000000003132952
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 “C1155” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003132953
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect brake fluid level switch connector.
3.
Disconnect unified meter and A/C amp. connector.
4.
Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts.
2.
CHECK BRAKE FLUID LEVEL SWITCH
Check brake fluid level switch. Refer to
BRC-72, "Component Inspection"
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.
Check the continuity between brake fluid level switch harness connector and unified meter and A/C amp.
harness connector.
2.
Check the continuity between brake fluid level switch harness connector and ground.
3.
Check the continuity between unified meter and A/C amp. harness connector 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
• Unified meter and A/C amp.
Unified meter and A/C amp.
Brake fluid level switch
Continuity
Connector
Terminal
Connector
Terminal
M67
57
E47
1
Existed
Brake fluid level switch
—
Continuity
Connector
Terminal
E47
2
Ground
Existed
BRC-72
< 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 damaged parts.
Component Inspection
INFOID:0000000003132954
1.
CHECK BRAKE FLUID LEVEL SWITCH
1.
Turn the ignition switch OFF.
2.
Disconnect brake fluid level switch connector.
3.
Check the continuity between brake fluid level switch connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace reservoir tank. Refer to
.
Special Repair Requirement
INFOID:0000000003430147
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.
—
Continuity
Connector
Terminal
M67
57
Ground
Not existed
Brake fluid level switch
Condition
Continuity
Terminal
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-73
< 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:0000000003132956
The ABS actuator and electric unit (control unit) and the ICC sensor integrated unit exchange signals via the
CAN communication line.
DTC Logic
INFOID:0000000003132957
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 “C1185” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003132958
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 damaged parts.
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 damaged parts.
NO
>> INSPECTION END
Special Repair Requirement
INFOID:0000000003430148
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
BRC-74
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000003132960
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
DTC Logic
INFOID:0000000003132961
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 “U1000” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003132962
1.
PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “U1000” detected?
YES
>> Proceed to diagnosis procedure. Refer to
LAN-18, "Trouble Diagnosis Flow Chart"
.
NO
>> INSPECTION END
Special Repair Requirement
INFOID:0000000003430149
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
U1000
CAN COMM CIRCUIT
When ABS actuator and electric unit (control unit) is not
transmitting or receiving CAN communication signal for 2
seconds or more.
• CAN communication line
• ABS actuator and electric unit
(control unit)
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