Infiniti FX35, FX50 (S51). Manual - part 1611

C1D10 FRONT BODY VERTICAL G SENSOR

SCS-29

< DTC/CIRCUIT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

SCS

N

O

P

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace E-SUS control unit. Refer to 

SCS-61, "Exploded View"

.

4.

PERFORM DATA MONITOR

With CONSULT-III

1.

Connect the front RH body vertical G sensor harness connector. 

2.

Start the engine.

3.

Select “DATA MONITOR” of “E-SUS”.

4.

Select “FR BDY G-SEN VOL” and “G-SEN VOL” of “DATA MONITOR”. 

5.

Drive the vehicle and check whether it is within the following range. 

Is the inspection result normal?

YES

>> Check pin terminal and connection of each harness connector for damage or loose connections.

NO

>> Replace front RH body vertical G sensor. Refer to 

SCS-62, "Exploded View"

. 

Front RH body vertical G sensor

Voltage

Connector

Terminal

E20

1

3

Approx. 4.75 – 5.25 V

FR BDY G-SEN VOL

: Approx. 0.5 – 4.5 V

G-SEN VOL

: Approx. 4.75 – 5.25 V

SCS-30

< DTC/CIRCUIT DIAGNOSIS >

C1D11 REAR VERTICAL G SENSOR

C1D11 REAR VERTICAL G SENSOR

Description

INFOID:0000000005588933

Detects the vertical G applied at vehicle rear, and outputs it to E-SUS control unit in analog voltage. 

DTC Logic

INFOID:0000000005588934

DTC DETECTION LOGIC

DTC REPRODUCTION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Turn the ignition switch OFF to ON.

2.

Perform “E-SUS” self-diagnosis.

Is DTC “C1D11” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

SCS-30, "Diagnosis Procedure"

. 

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005588935

1.

CHECK REAR BODY VERTICAL G SENSOR

Check rear body vertical G sensor for damage, disconnection or looseness.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace rear body vertical sensor. Then perform the self-diagnosis.

2.

CHECK REAR BODY VERTICAL G SENSOR HARNESS

1.

Disconnect the E-SUS control unit harness connector and rear body vertical G sensor harness connector. 

2.

Check the continuity between the E-SUS control unit harness connector and rear body vertical G sensor
harness connector. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the malfunctioning harness or connector. 

3.

CHECK REAR BODY VERTICAL G SENSOR POWER SUPPLY CIRCUIT

1.

Connect the E-SUS control unit harness connector. 

2.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

3.

Check the voltage between rear body vertical G sensor harness connector.

DTC

Display Item

Malfunction detected condition

Possible causes

C1D11

R VERTICAL G-SEN

• A malfunction occurs in the output voltage from 

the rear body vertical G sensor. 

• A malfunction occurs in the supply voltage to the 

rear body vertical G sensor. 

• Harness or connector
• rear body vertical G 

sensor

• E-SUS control unit

E-SUS control unit

Rear body vertical G sensor

Continuity

Connector

Terminal

Connector

Terminal

B38

30

B56

1

Existed

14

2

25

3

C1D11 REAR VERTICAL G SENSOR

SCS-31

< DTC/CIRCUIT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

SCS

N

O

P

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace E-SUS control unit. Refer to 

SCS-61, "Exploded View"

.

4.

PERFORM DATA MONITOR

With CONSULT-III

1.

Connect the rear body vertical G sensor harness connector. 

2.

Start the engine.

3.

Select “DATA MONITOR” of “E-SUS”.

4.

Select “R G-SEN VOL” and “G-SEN VOL” of “DATA MONITOR”. 

5.

Drive the vehicle and check whether it is within the following range. 

Is the inspection result normal?

YES

>> Check pin terminal and connection of each harness connector for damage or loose connections.

NO

>> Replace rear body vertical G sensor. Refer to 

SCS-64, "Exploded View"

. 

Rear body vertical G sensor

Voltage

Connector

Terminal

B56

1

3

Approx. 4.75 – 5.25 V

R G-SEN VOL

: Approx. 0.5 – 4.5 V

G-SEN VOL

: Approx. 4.75 – 5.25 V

SCS-32

< DTC/CIRCUIT DIAGNOSIS >

C1D12 SHOCK ABSORBER ACTUATOR

C1D12 SHOCK ABSORBER ACTUATOR

Description

INFOID:0000000005588936

Integrated into each the shock absorbers on wheels and opens or closes the orifice by moving the solenoid
core vertically with the control current from E-SUS control unit to regulate the damping force. 

DTC Logic

INFOID:0000000005588937

DTC DETECTION LOGIC

DTC REPRODUCTION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Start the engine and drive. Or select “E-SUS”, “FRONT RIGHT ACTUATOR” of “ACTIVE TEST”, and per-
form the active test. Refer to 

SCS-10, "CONSULT-III Function"

.

2.

Perform “E-SUS” self-diagnosis.

Is DTC “C1D12” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

SCS-32, "Diagnosis Procedure"

. 

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005588938

1.

CHECK FRONT RH SHOCK ABSORBER ACTUATOR CIRCUIT (1)

1.

Disconnect the E-SUS control unit harness connector. 

2.

Check the resistance between the E-SUS control unit harness connector. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK FRONT RH SHOCK ABSORBER ACTUATOR CIRCUIT (2)

1.

Disconnect the front RH shock absorber actuator harness connector. 

2.

Check the continuity between the E-SUS control unit harness connector and front RH shock absorber
actuator harness connector. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the malfunctioning harness or connector. 

DTC

Display Item

Malfunction detected condition

Possible causes

C1D12

FR ACTUATOR SIG

An open or short circuit is detected in the front 
RH wheel shock absorber actuator. 

• Harness or connector
• Malfunction of the front RH 

wheel shock absorber ac-
tuator

• E-SUS control unit

E-SUS control unit

Resistance

Connector

Terminal

B38

3

Approx. 0.65 

Ω

2

E-SUS control unit

Front RH shock absorber actuator

Continuity

Connector

Terminal

Connector

Terminal

B38

3

E83

1

Existed

2

2