Infiniti FX35, FX50 (S51). Manual — part 1607
C1D01 VEHICLE SPEED SIGNAL
SCS-13
< DTC/CIRCUIT DIAGNOSIS >
C
D
F
G
H
I
J
K
L
M
A
B
SCS
N
O
P
Perform “E-SUS” self-diagnosis.
Is another DTC detected?
YES
>> Check the detected DTC items. Refer to
NO
>> GO TO 3.
3.
CHECK INFORMATION
With CONSULT-III
1.
Select “DATA MONITOR” of “E-SUS”.
2.
Check the “VEHICLE SPEED” of “DATA MONITOR” screen. Refer to
.
Is each data within standard values?
YES
>> Check pin terminal and connection of each harness connector for damage or loose connection.
Repair or replace error-detected parts.
NO
>> Replace E-SUS control unit. Refer to
SCS-14
< DTC/CIRCUIT DIAGNOSIS >
C1D03 STEERING ANGLE SENSOR
C1D03 STEERING ANGLE SENSOR
Description
INFOID:0000000005588909
The steering angle signal is transmitted from the steering angle sensor to E-SUS control unit via CAN commu-
nication.
DTC Logic
INFOID:0000000005588910
DTC DETECTION LOGIC
DTC REPRODUCTION PROCEDURE
CAUTION:
If the CAN signal "Unavailable" or "Broken" is received while the battery voltage is in the low (between
6 V and 9 V) condition, and when intending to perform another self-diagnosis operation to record the
DTC history, always start the procedure after checking that the battery voltage is within the specified
normal value.
1.
CHECK E-SUS CONTROL UNIT SIGNAL
With CONSULT-III
1.
Start the engine.
CAUTION:
Always hold the vehicle stopped.
2.
Select “DATA MONITOR” of “E-SUS”.
3.
Check the value of “IGN” on “DATA MONITOR” screen.
Is the value in “DATA MONITOR” “between 6 V and 9 V” or more?
YES
>> GO TO 2.
NO
>> Perform the diagnosis for the charging system. Refer to
.
2.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
Perform “E-SUS” self-diagnosis.
Is DTC “C1D03” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005588911
1.
PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
With CONSULT-III
Perform “ABS” self-diagnosis.
Is DTC detected?
YES
>> Check the detected DTC items.
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform “E-SUS” self-diagnosis.
Is another DTC detected?
YES
>> Check the detected DTC items. Refer to
DTC
Display Item
Malfunction detected condition
Possible causes
C1D03
ST ANGLE SPEED SIG
• A malfunction is detected in the steering angle
sensor signal output from the steering angle sen-
sor to CAN communication.
• No transmission of the steering angle signal from
the steering angle sensor.
• Harness or connector
(CAN communication
line)
• Steering angle sensor
• E-SUS control unit
• Battery low voltage
C1D03 STEERING ANGLE SENSOR
SCS-15
< DTC/CIRCUIT DIAGNOSIS >
C
D
F
G
H
I
J
K
L
M
A
B
SCS
N
O
P
NO
>> GO TO 3.
3.
CHECK INFORMATION
With CONSULT-III
1.
Select “DATA MONITOR” of “E-SUS”.
2.
Check “ST ANGLE SIG”of “DATA MONITOR” screen. Refer to
.
Is each data within standard values?
YES
>> Check pin terminal and connection of each harness connector for damage or loose connection.
Repair or replace error-detected parts.
NO
>> Replace E-SUS control unit. Refer to
SCS-16
< DTC/CIRCUIT DIAGNOSIS >
C1D05 TORQUE SIGNAL
C1D05 TORQUE SIGNAL
Description
INFOID:0000000005588912
The required torque signal is transmitted from ECM to E-SUS control unit via CAN communication.
DTC Logic
INFOID:0000000005588913
DTC DETECTION LOGIC
DTC REPRODUCTION PROCEDURE
CAUTION:
If the CAN signal "Unavailable" or "Broken" is received while the battery voltage is in the low (between
6 V and 9 V) condition, and when intending to perform another self-diagnosis operation to record the
DTC history, always start the procedure after checking that the battery voltage is within the specified
normal value.
1.
CHECK E-SUS CONTROL UNIT SIGNAL
With CONSULT-III
1.
Start the engine.
CAUTION:
Always hold the vehicle stopped.
2.
Select “DATA MONITOR” of “E-SUS”.
3.
Check the value of “IGN” on “DATA MONITOR” screen.
Is the value in “DATA MONITOR” “between 6 V and 9 V” or more?
YES
>> GO TO 2.
NO
>> Perform the diagnosis for the charging system. Refer to
.
2.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
Perform “E-SUS” self-diagnosis.
Is DTC “C1D05” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005588914
1.
PERFORM SELF-DIAGNOSIS OF ECM
With CONSULT-III
Perform “ENGINE” self-diagnosis.
Is DTC detected?
YES
>> Check the detected DTC items.
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform “E-SUS” self-diagnosis.
Is another DTC detected?
YES
>> Check the detected DTC items. Refer to
NO
>> GO TO 3.
DTC
Display Item
Malfunction detected condition
Possible causes
C1D05
REQST TRQ SIG
No transmission of the required torque signal from
ECM.
• Harness or connector
(CAN communication
line)
• ECM
• E-SUS control unit
• Battery low voltage
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