Infiniti G35 (V35) Sedan. Manual - part 396

DLN-18

< COMPONENT DIAGNOSIS >

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C1204 AWD SOLENOID

Is the inspection result normal?

YES

>> Replace AWD control unit. Refer to 

DLN-49, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection

INFOID:0000000000957240

1.

CHECK AWD SOLENOID

1.

Turn the ignition switch OFF.

2.

Disconnect AWD solenoid harness connector.

3.

Check the resistance between AWD solenoid harness connector terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> AWD solenoid is malfunctioning. Replace electric controlled coupling. Refer to 

DLN-69, "Exploded

View"

.

AWD solenoid

 Resistance (Approx.)

Connector

Terminal

F57

1 – 2

2.45 

Ω

C1205 AWD ACTUATOR RELAY

DLN-19

< COMPONENT DIAGNOSIS >

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C1205 AWD ACTUATOR RELAY

Description

INFOID:0000000000957241

• AWD solenoid is supplied with voltage by the internal circuit of AWD control unit. 

DTC Logic

INFOID:0000000000957242

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

 With CONSULT-III

1.

Turn the ignition switch OFF to ON.

2.

Perform the self-diagnosis.

Is DTC “C1205” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-19, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000957243

1.

PERFORM SELF-DIAGNOSIS

 With CONSULT-III

1.

Erase AWD control unit self-diagnosis results.

2.

Wait 10 minutes or more after turning the ignition switch OFF.

3.

Perform self-diagnosis of AWD control unit.

Is DTC “C1205” detected?

YES

>> Replace AWD control. Refer to 

DLN-49, "Exploded View"

.

NO

>> Check AWD control unit pin terminals for damage or loose connection with harness connector. If

any items are damaged, repair or replace damaged parts.

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

C1205

4WD ACTUATOR RLY

Malfunction has been detected from 
AWD actuator relay integrated with AWD 
control unit, or malfunction related to 
AWD solenoid has been detected.

Internal malfunction of AWD control unit

DLN-20

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C1210 ECM

C1210 ECM

Description

INFOID:0000000000957244

• Transmits the following signals via CAN communication to AWD control unit.
- Accelerator pedal position signal
- Engine speed signal

DTC Logic

INFOID:0000000000957245

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

 With CONSULT-III

1.

Start the engine. Drive the vehicle for a while.

2.

Perform the self-diagnosis.

Is DTC “C1210” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-20, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000957246

1.

ECM SELF-DIAGNOSIS

 With CONSULT-III

Perform self-diagnosis of ECM.
Is any malfunction detected by self-diagnosis?

YES

>> Check the malfunctioning system.

NO

>> GO TO 2.

2.

AWD CONTROL UNIT SELF-DIAGNOSIS

 With CONSULT-III

1.

Erase AWD control unit self-diagnosis results.

2.

Turn the ignition switch OFF.

3.

Start the engine. Drive the vehicle for a while.

4.

Make sure that malfunction indicator lamp (MIL) turns OFF.

5.

Stop the vehicle. Perform AWD control unit self-diagnosis.

Is DTC “C1210” detected?

YES

>> Replace AWD control. Refer to 

DLN-49, "Exploded View"

.

NO

>> Check AWD control unit pin terminals for damage or loose connection with harness connector. If

any items are damaged, repair or replace damaged parts.

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

C1210

ENGINE SIGNAL 1

Malfunction has been detected from 
ECM.

Malfunction of engine control system
• Accelerator pedal position signal error
• Engine speed signal error

U1000 CAN COMM CIRCUIT

DLN-21

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U1000 CAN COMM CIRCUIT

Description

INFOID:0000000000957247

• CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle

multiplex communication line with high data communication speed and excellent error detection ability. Many
electronic control units are equipped onto a vehicle, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with
less wiring. Each control unit transmits/receives data but selectively reads required data only.

DTC Logic

INFOID:0000000000957248

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

 With CONSULT-III

1.

Turn the ignition switch OFF to ON.

2.

Perform the self-diagnosis.

Is DTC “U1000” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-21, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000957249

1.

PERFORM SELF-DIAGNOSIS

 With CONSULT-III

Perform self-diagnosis of AWD control unit.
Is DTC “U1000” detected?

YES

>> CAN specification chart.

NO

>> INSPECTION END

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

U1000

CAN COMM CIRCUIT

When AWD control unit is not transmit-
ting or receiving CAN communication 
signal for 2 seconds or more.

CAN communication line error