Nissan Qashqai (2007-2010). Manual - part 612

C1209 MODE SW

DLN-21

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Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK 4WD MODE SWITCH CIRCUIT (2)

1.

Disconnect 4WD control unit harness connector.

2.

Check the continuity between 4WD control unit harness connector and 4WD mode switch harness con-
nector.

3.

Check the continuity between 4WD control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK 4WD CONTROL UNIT OUTPUT SIGNAL

1.

Connect 4WD control unit harness connector.

2.

Turn the ignition switch ON.

3.

Check the voltage between 4WD mode switch harness connector and ground.

Is the inspection result normal?

YES

>> Check each harness connector pin terminal for disconnection.

NO

>> Replace 4WD control unit. Refer to 

DLN-56, "LHD : Exploded View"

 (LHD models), 

DLN-56,

"RHD : Exploded View"

 (RHD models).

Component Inspection

INFOID:0000000001083110

1.

CHECK 4WD MODE SWITCH

1.

Turn the ignition switch OFF.

2.

Remove 4WD mode switch.

4WD control unit

4WD mode switch

Continuity

Connector

Terminal

Connector

Terminal

M69

14

M8

3

Not existed

14

6

Not existed

14

8

Existed

5

3

Not  existed

5

6

Existed

5

8

Not  existed

12

3

Existed

12

6

Not existed

12

8

Not existed

4WD control unit

Continuity

Connector

Terminal

M69

14 – Ground

Not existed

5 – Ground

12 – Ground

4WD mode switch

Voltage (Approx.)

Connector

Terminal

M8

3 – Ground

Battery voltage

6 – Ground

8 – Ground

DLN-22

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C1209 MODE SW

3.

Check the continuity between 4WD mode switch connector terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace 4WD mode switch.

4WD mode switch

Continuity

Connector

Terminal

Condition

M8

2 – 3

4WD mode switch: 2WD

Existed

Except the above

Not existed

2 – 6

4WD mode switch: 2WD

Not existed

4WD mode switch: AUTO

Existed

4WD mode switch: LOCK
(State of hold of LOCK position)

2 – 8

4WD mode switch: LOCK
(State of hold of LOCK position)

Existed

Except the above

Not existed

C1210 ECM

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C1210 ECM

Description

INFOID:0000000000972090

Transmits the following signals via CAN communication to 4WD control unit.
• Accelerator pedal position signal
• Engine speed signal

DTC Logic

INFOID:0000000000972091

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 4WD control unit self-diagnosis.

Is DTC “C1210” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-23, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000972092

1.

PERFORM ECM SELF-DIAGNOSIS

With CONSULT-III

Perform ECM self-diagnosis.
Is any error system detected?

YES

>> Check the error system.

NO

>> GO TO 2.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT-III

1.

Erase 4WD 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 (MI) turns OFF.

5.

Stop the vehicle. Perform 4WD control unit self-diagnosis.

Is DTC “C1210” detected?

YES

>> Replace 4WD control unit. Refer to 

DLN-56, "LHD : Exploded View"

 (LHD models), 

DLN-56,

"RHD : Exploded View"

 (RHD models).

NO

>> Check 4WD 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

DLN-24

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U1000 CAN COMM CIRCUIT

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000000972093

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic 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. Refer to 

LAN-59, "CAN

Communication Signal Chart"

.

DTC Logic

INFOID:0000000000972094

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Turn the ignition switch OFF to ON.

2.

Perform 4WD control unit self-diagnosis.

Is DTC “U1000” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-24, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000972095

1.

PERFORM SELF-DIAGNOSIS

With CONSULT-III

Perform 4WD control unit self-diagnosis.

Is DTC “U1000” detected?

YES

>> CAN specification chart. Refer to 

LAN-46, "Trouble Diagnosis Flow Chart"

.

NO

>> INSPECTION END

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

U1000

CAN COMM CIRCUIT

When 4WD control unit is not transmit-
ting or receiving CAN communication 
signal for 2 seconds or more.

CAN communication line error