Infiniti FX35, FX50 (S51). Manual - part 1608

C1D05 TORQUE SIGNAL

SCS-17

< DTC/CIRCUIT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

SCS

N

O

P

3.

CHECK INFORMATION

With CONSULT-III

1.

Select “DATA MONITOR” of “E-SUS”.

2.

Check “REQUESTED TRQ” 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 the error-detected parts. 

NO

>> Replace E-SUS control unit. Refer to 

SCS-61, "Exploded View"

. 

SCS-18

< DTC/CIRCUIT DIAGNOSIS >

C1D07 STOP LAMP SWITCH

C1D07 STOP LAMP SWITCH

Description

INFOID:0000000005588915

The stop lamp switch signal is transmitted from the ABS actuator and electric unit (control unit) to E-SUS con-
trol unit via CAN communication. 

DTC Logic

INFOID:0000000005588916

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 “C1D07” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

SCS-18, "Diagnosis Procedure"

. 

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005588917

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.

DTC

Display Item

Malfunction detected condition

Possible causes

C1D07

STOP LAMP SW SIG

No transmission of stop lamp switch signal from the 
ABS actuator and electric unit (control unit). 

• Harness or connector 

(CAN communication 
line)

• ABS actuator and 

electric unit (control 
unit)

• E-SUS control unit
• Battery low voltage

C1D07 STOP LAMP SWITCH

SCS-19

< DTC/CIRCUIT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

SCS

N

O

P

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 “STP LAMP SW” of “DATA MONITOR”. 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 connections.

Repair or replace the error-detected parts. 

NO

>> Replace E-SUS control unit. Refer to 

SCS-61, "Exploded View"

. 

SCS-20

< DTC/CIRCUIT DIAGNOSIS >

C1D09 BRAKE FLUID PRESSURE SIGNAL

C1D09 BRAKE FLUID PRESSURE SIGNAL

Description

INFOID:0000000005588918

The brake pressure control signal is transmitted from the ABS actuator and electric unit (control unit) to E-SUS
control unit via CAN communication. 

DTC Logic

INFOID:0000000005588919

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 “C1D09” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

SCS-20, "Diagnosis Procedure"

. 

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005588920

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.

DTC

Display Item

Malfunction detected condition

Possible causes

C1D09

BRK FLD PRESS SIG

• A malfunction is detected in the brake pressure 

control signal output from the ABS actuator and 
electric unit (control unit) to CAN communication. 

• No transmission of brake pressure control signal 

from the ABS actuator and electric unit (control 
unit). 

• Harness or connector 

(CAN communication 
line)

• ABS actuator and 

electric unit (control 
unit)

• E-SUS control unit
• Battery low voltage