Infiniti G37 Coupe. Manual — part 659
EXL-56
< COMPONENT DIAGNOSIS >
[XENON TYPE]
C0126 STEERING ANGLE SENSOR SIGNAL
C0126 STEERING ANGLE SENSOR SIGNAL
Description
INFOID:0000000001604639
AFS control unit receives the steering angle sensor signal from the steering angle sensor with CAN communi-
cation.
DTC Logic
INFOID:0000000001604640
DTC DETECTION LOGIC
[C0126] Steering angle sensor signal
DTC CONFIRMATION PROCEDURE
1.
DTC ERASE
Erase the DTC memory of AFS with CONSULT-III.
>> GO TO 2.
2.
DTC CONFIRMATION
1.
Start the engine.
2.
Turn the steering wheel to the maximum right/left.
3.
Select the self-diagnosis with CONSULT-III.
Is “C0126” detected?
YES
>> Refer to
.
NO
>> Refer to
GI-38, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000001604641
1.
ABS ACTUATOR AND ELECTRICAL UNIT (CONTROL UNIT) SELF-DIAGNOSIS
Check the self-diagnosis result with CONSULT-III. Check that ABS actuator and electrical unit (control unit)
does not detect any DTCs.
Is any DTC detected?
YES
>> Check ABS actuator and electrical unit (control unit).Refer to
NO
>> GO TO 2.
2.
DTC ERASE
Erase DTC memory of AFS with CONSULT-III.
Is the memory erased?
YES
>> Inspection end.
NO
>> Replace AFS control unit.
DTC detection condition
DTC erase condition
Possible causes
In any of the following conditions
• The steering angle sensor signal is not received.
• The steering angle sensor signal error is received.
• Out-of-standard signal (-900
°
- +900
°
) is received.
The ignition switch OFF
• Steering angle sensor
• AFS control unit
C0428 STEERING ANGLE SENSOR CALIBRATION
EXL-57
< COMPONENT DIAGNOSIS >
[XENON TYPE]
C
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EXL
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C0428 STEERING ANGLE SENSOR CALIBRATION
Description
INFOID:0000000001604642
AFS control unit receives the steering angle sensor signal from the steering angle sensor with CAN communi-
cation.
DTC Logic
INFOID:0000000001604643
[C0428] Steering angle sensor calibration
Diagnosis Procedure
INFOID:0000000001604644
1.
STEERING ANGLE SENSOR NEUTRAL POSITION ADJUSTMENT
Perform the steering angle sensor neutral position adjustment.
CAUTION:
Perform the steering angle sensor neutral position adjustment on VDC side. VDC may activate incor-
rectly.
>> Refer to
BRC-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Spe-
DTC detection condition
DTC erase condition
Possible causes
The steering angle sensor neutral position is not recog-
nized.
When the steering angle sensor
neutral position registration is
completed
Steering angle sensor
EXL-58
< COMPONENT DIAGNOSIS >
[XENON TYPE]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000001604645
CAN (Controller Area Network) is the serial transmission for real time application. CAN is the multiplex com-
munication for the vehicle with superior data transmission speed and error detection ability. Many electronic
control units are equipped on the vehicle. These control units do not operate individually, but associates with
other control units by sharing information. In CAN communication, each control unit is connected with two
communication lines (CAN-H and CAN-L). Much information is transmitted with fewer communication lines
than before. Each control unit transmits/receives data and reads the necessary data only.
DTC Logic
INFOID:0000000001604646
DTC DETECTION LOGIC
[U1000] CAN communication circuit
Diagnosis Procedure
INFOID:0000000001604647
1.
PERFORM SELF DIAGNOSTIC
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-16, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-38, "Intermittent Incident"
.
DTC detection condition
DTC erase condition
Possible causes
When AFS control unit does not transmit/receive CAN com-
munication signal continuously for 2 seconds or more
Ignition switch OFF
One or more following items of CAN com-
munication system are error.
• Transmission
• Reception (ECM)
• Reception (Unified meter and A/C amp.)
• Reception (TCM)
• Reception (Steering angle sensor)
• Reception (IPDM E/R)
U1010 CONTROL UNIT (CAN)
EXL-59
< COMPONENT DIAGNOSIS >
[XENON TYPE]
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U1010 CONTROL UNIT (CAN)
DTC Logic
INFOID:0000000001728893
DTC DETECTION LOGIC
[U1010] Control unit (CAN)
Diagnosis Procedure
INFOID:0000000001728894
1.
REPLACE AFS CONTROL UNIT
When DTC [U1010] is detected, replace AFS control unit.
>> Replace AFS control unit.
DTC detection condition
DTC erase condition
Possible cause
AFS control unit detected internal CAN communication circuit malfunction.
Ignition switch OFF
AFS control unit
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