Infiniti FX35, FX50 (S51). Manual — part 1781
C1919 VEHICLE SPEED SIGNAL
STC-65
< DTC/CIRCUIT DIAGNOSIS >
[WITH REAR ACTIVE STEER]
C
D
E
F
H
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J
K
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M
A
B
STC
N
O
P
C1919 VEHICLE SPEED SIGNAL
Description
INFOID:0000000005549699
The vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) to RAS control unit
via CAN communication.
DTC Logic
INFOID:0000000005549700
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch from OFF to ON.
2.
Perform “4WAS(MAIN)/RAS/HICAS” self-diagnosis.
Without CONSULT-III
1.
Start the engine.
2.
Perform the self-diagnosis. Refer to
STC-38, "Diagnosis Description"
.
Is DTC “C1919” or “RAS warning lamp flickering pattern:21” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005549701
1.
PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-III
Perform “ABS” self-diagnosis.
Is any error system detected?
YES
>> Check the error system.
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform “4WAS(MAIN)/RAS/HICAS” self-diagnosis.
Is DTC “U1000” or “U1010” detected?
YES
>> Check the error system.
NO
>> GO TO 3.
3.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
1.
Turn the ignition switch from OFF to ON.
2.
Perform “4WAS(MAIN)/RAS/HICAS” self-diagnosis.
Without CONSULT-III
1.
Start the engine.
2.
Perform the self-diagnosis. Refer to
STC-38, "Diagnosis Description"
.
Is DTC “C1919” or “RAS warning lamp flickering pattern:21” detected?
YES
>> Replace RAS control unit. Refer to
STC-109, "Removal and Installation"
NO
>> GO TO 4.
DTC
Display items
Malfunction detected condition
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.)
• ABS actuator and elec-
tric unit (control unit)
• CAN communication
line
• RAS control unit
STC-66
< DTC/CIRCUIT DIAGNOSIS >
[WITH REAR ACTIVE STEER]
C1919 VEHICLE SPEED SIGNAL
4.
INFORMATION CHECK
With CONSULT-III
1.
Select “DATA MONITOR” of “4WAS(MAIN)/RAS/HICAS”.
2.
Check the “DATA MONITOR” value of each DTC detected with the self-diagnosis function. Refer to
.
Is each data the standard value?
YES
>> Check that there is no malfunction in each harness connector pin terminal or disconnection.
NO
>> Replace RAS control unit. Refer to
STC-109, "Removal and Installation"
.
Special Repair Requirement
INFOID:0000000005549702
BEFORE REPLACING RAS CONTROL UNIT
• Record the self-diagnosis results (history).
CAUTION:
• Never erase the memory (history) of self-diagnosis results when replacing RAS 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”.
C1920 STEERING ANGLE SENSOR
STC-67
< DTC/CIRCUIT DIAGNOSIS >
[WITH REAR ACTIVE STEER]
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
C1920 STEERING ANGLE SENSOR
Description
INFOID:0000000005549703
Steering angle sensor signal is transmitted from steering angle sensor to RAS control unit via CAN communi-
cation.
DTC Logic
INFOID:0000000005549704
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch from OFF to ON.
2.
Perform “4WAS(MAIN)/RAS/HICAS” self-diagnosis.
Without CONSULT-III
1.
Start the engine.
2.
Perform the self-diagnosis. Refer to
STC-38, "Diagnosis Description"
.
Is DTC “C1920” or “RAS warning lamp flickering pattern:22” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005549705
1.
PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-III
Perform “ABS” self-diagnosis.
Is any error system detected?
YES
>> Check the error system.
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform “4WAS(MAIN)/RAS/HICAS” self-diagnosis.
Is DTC “U1000” or “U1010” detected?
YES
>> Check the error system.
NO
>> GO TO 3.
3.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
1.
Turn the ignition switch from OFF to ON.
2.
Perform “4WAS(MAIN)/RAS/HICAS” self-diagnosis.
Without CONSULT-III
1.
Start the engine.
2.
Perform the self-diagnosis. Refer to
STC-38, "Diagnosis Description"
.
Is DTC “C1920” or “RAS warning lamp flickering pattern:22” detected?
YES
>> Replace RAS control unit. Refer to
STC-109, "Removal and Installation"
NO
>> GO TO 4.
DTC
Display items
Malfunction detected condition
Possible cause
C1920
STEERING ANGLE SEN
[NO SIGNAL]
Malfunction is detected in steering angle sensor signal
that is output from steering angle sensor via CAN com-
munication.
(No transmission from the steering angle sensor)
• Steering angle sensor
• CAN communication
line
• RAS control unit
STC-68
< DTC/CIRCUIT DIAGNOSIS >
[WITH REAR ACTIVE STEER]
C1920 STEERING ANGLE SENSOR
4.
INFORMATION CHECK
With CONSULT-III
1.
Select “DATA MONITOR” of “4WAS(MAIN)/RAS/HICAS”.
2.
Check the “DATA MONITOR” value of each DTC detected with the self-diagnosis function. Refer to
.
Is each data the standard value?
YES
>> Check that there is no malfunction in each harness connector pin terminal or disconnection.
NO
>> Replace RAS control unit. Refer to
STC-109, "Removal and Installation"
.
Special Repair Requirement
INFOID:0000000005549706
BEFORE REPLACING RAS CONTROL UNIT
• Record the self-diagnosis results (history).
CAUTION:
• Never erase the memory (history) of self-diagnosis results when replacing RAS 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”.
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