Infiniti G37 Coupe. Manual — part 1264
C1917, C1918 REAR WHEEL STEERING ANGLE SENSOR
STC-107
< COMPONENT DIAGNOSIS >
[WITH 4WAS]
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
C1917, C1918 REAR WHEEL STEERING ANGLE SENSOR
Description
INFOID:0000000001666421
• It detects the steering angle condition of rear wheel.
• 2 systems (main and sub sensor) are equipped.
DTC Logic
INFOID:0000000001666422
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
RECHECK DTC
With CONSULT-III
1.
Start the engine.
CAUTION:
Stop the vehicle.
2.
Perform the active test.
3.
Perform 4WAS main control unit self-diagnosis.
Is DTC “C1917” or “C1918” detected?
YES
>> Proceed to diagnosis procedure. Refer to
STC-107, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001666423
1.
CHECK REAR WHEEL STEERING ANGLE SENSOR (1)
With CONSULT-III
1.
Start engine.
CAUTION:
Check condition with the vehicle stopped.
2.
Check “RR ST ANG-MAI” and “RR ST ANG-SUB” item on “DATA MONITOR” of 4WAS main control unit.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace 4WAS rear actuator. Refer to
2.
CHECK REAR WHEEL STEERING ANGLE SENSOR (2)
Check the voltage between 4WAS main control unit harness connector terminal and ground.
DTC
Items
(CONSULT-III screen terms)
Diagnostic item is detected when...
Possible cause
C1917
RR ST ANGLE SENSOR
[OFFSET SIG1]
The rear wheel angle sensor signal (main and sub) er-
ror is detected.
(The output signal value differs temporarily between
main and sub.)
Rear wheel steering sen-
sor (main and sub) output
signal value error signal
C1918
RR ST ANGLE SENSOR
[OFFSET SIG2]
The rear wheel angle sensor signal (main and sub) er-
ror is detected.
(The output signal value differs between main and sub.)
Rear wheel steering sen-
sor (main and sub) output
signal error
Monitored item
Condition
Display value
RR ST ANG-MAI
Straight-ahead
Approx. 2.4 V
RR ST ANG-SUB
Straight-ahead
Approx. 2.6 V
STC-108
< COMPONENT DIAGNOSIS >
[WITH 4WAS]
C1917, C1918 REAR WHEEL STEERING ANGLE SENSOR
Is the differential between terminal voltage No. 4 and No.7 approximately 1 V or more?
YES
>> Replace 4WAS main control unit. Refer to
NO
>> GO TO 3.
3.
CHECK REAR WHEEL STEERING ANGLE SENSOR (3)
1.
Turn the ignition switch OFF.
2.
Disconnect rear wheel steering angle sensor harness connector.
3.
Check resistance between rear wheel steering angle sensor connector terminals.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace 4WAS rear actuator. Refer to
4.
CHECK REAR WHEEL STEERING ANGLE SENSOR GROUND CIRCUIT
1.
Disconnect 4WAS main control unit harness connector.
2.
Check for continuity between 4WAS main control unit harness connector terminal and rear wheel steering
angle sensor harness connector terminal.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace each harness and connector.
5.
RERFORM SELF-DIAGNOSIS (4WAS MAIN CONTROL UNIT)
With CONSULT-III
1.
Connect 4WAS main control unit harness connector.
2.
Connect rear wheel steering angle sensor harness connector.
3.
Perform 4WAS main control unit self-diagnosis.
Is DTC “C1917” or “C1918” detected?
YES
>> Replace 4WAS main control unit. Refer to
NO
>> GO TO 6.
4WAS main control unit
Voltage (Approx.)
Connector
Terminal
B54
4 – Ground
2.4 V
7 – Ground
2.6 V
Rear wheel steering angle sensor
Resistance (Approx.)
Connector
Terminal
B35
1 – 3
1 k
Ω
1 – 2
1.2 – 1.5 k
Ω
1 – 4
1.2 – 1.5 k
Ω
4WAS main control unit
Rear wheel steering angle
sensor
Continuity
Connector
Terminal
Connector
Terminal
B54
4
B35
1, 2, 3
Not existed
B54
4
B35
4
Existed
B54
7
B35
1, 3, 4
Not existed
B54
7
B35
2
Existed
B54
5
B35
1
Existed
B54
5
B35
2, 3, 4
Not existed
B54
15
B35
1, 2, 4
Not existed
B54
15
B35
3
Existed
C1917, C1918 REAR WHEEL STEERING ANGLE SENSOR
STC-109
< COMPONENT DIAGNOSIS >
[WITH 4WAS]
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
6.
CHECK INFORMATION
With CONSULT-III
Check the “DATA MONITOR” value of each DTC detected with the self-diagnosis function. Refer to
.
Is each data standard?
YES
>> Check pin terminal and connection of each harness connector for non-standard conditions.
NO
>> Replace 4WAS main control unit. Refer to
Component Inspection
INFOID:0000000001666424
1.
CHECK REAR WHEEL STEERING ANGLE SENSOR
1.
Turn the ignition switch OFF.
2.
Disconnect rear wheel steering angle sensor harness connector.
3.
Check the resistance between rear wheel steering angle sensor connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace 4WAS rear actuator. Refer to
Special Repair Requirement
INFOID:0000000001666425
BEFORE REPLACING 4WAS MAIN CONTROL UNIT
• Record the self-diagnosis results (history).
CAUTION:
• Never erase the memory (history) of self-diagnosis results when replacing 4WAS main control unit
after diagnosis.
• Erase the memory of the self-diagnosis results (record) after printing out or recording all the val-
ues of “DATA MONITOR”.
Rear wheel steering angle sensor
Resistance (Approx.)
Connector
Terminal
B35
1 – 3
1 k
Ω
1 – 2
1.2 – 1.5 k
Ω
1 – 4
1.2 – 1.5 k
Ω
STC-110
< COMPONENT DIAGNOSIS >
[WITH 4WAS]
C1919 VEHICLE SPEED SIGNAL
C1919 VEHICLE SPEED SIGNAL
Description
INFOID:0000000001666426
• The vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) to 4WAS main con-
trol unit via CAN communication.
DTC Logic
INFOID:0000000001666427
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
RECHECK DTC
With CONSULT-III
1.
Turn the ignition switch from OFF to ON.
2.
Perform 4WAS main control unit self-diagnosis.
Is DTC “C1919” detected?
YES
>> Proceed to diagnosis procedure. Refer to
STC-110, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001666428
1.
PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-III
Perform ABS actuator and electrical unit (control unit) self-diagnosis.
Is any error system detected?
YES
>> Check the error system.
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS (4WAS MAIN CONTROL UNIT)
With CONSULT-III
Perform 4WAS main control unit self-diagnosis.
Is DTC “U1000” or “U1010” detected?
YES
>> Check the error system.
NO
>> GO TO 3.
3.
PERFORM SELF-DIAGNOSIS (4WAS MAIN CONTROL UNIT)
With CONSULT-III
Perform 4WAS main control unit self-diagnosis.
Is DTC “C1919” detected?
YES
>> Replace 4WAS main control unit. Refer to
NO
>> GO TO 4.
4.
INFORMATION CHECK
With CONSULT-III
Check the “DATA MONITOR” value of each DTC detected with the self-diagnosis function. Refer to
.
Is each data the standard value?
DTC
Items
(CONSULT-III screen terms)
Diagnostic item is detected when...
Possible cause
C1919
VEHICLE SPEED SEN
[NO SIGNAL]
Malfunction is detected in vehicle speed signal that is
output from ABS actuator and electric unit (control unit)
via CAN communication.
(Improper signal inputs while driving.)
Vehicle speed signal error
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст