Infiniti FX35, FX50 (S51). Manual - part 1607

 

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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 

SCS-58, "DTC Index"

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 

SCS-49, "Reference Value"

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-61, "Exploded View"

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 

CHG-23, "Symptom Table"

2.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

Perform “E-SUS” self-diagnosis.

Is DTC “C1D03” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

SCS-14, "Diagnosis Procedure"

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 

SCS-58, "DTC Index"

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 

SCS-49, "Reference Value"

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-61, "Exploded View"

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 

CHG-23, "Symptom Table"

.

2.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

Perform “E-SUS” self-diagnosis.

Is DTC “C1D05” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

SCS-16, "Diagnosis Procedure"

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 

SCS-58, "DTC Index"

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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