Nissan Qashqai (2007-2010). Manual - part 616

4WD CONTROL UNIT

DLN-37

< ECU DIAGNOSIS >

[TRANSFER: TY30A]

DLN

• 4WD system activates its protection function (shuts down 4WD system temporarily) if 4WD system detects

high load continuously or the front wheel tire size differs from the rear tire size. (4WD system is automatically
restored if 4WD system no longer detects any overload or the tire size difference is eliminated.)

*1: Quick blinking: 2 times/second (blinking for approx. 1 minute and then turned OFF)

*2: Slow blinking: 1 time/2 seconds (Continuing to blink until ignition switch is turned OFF)

DTC Inspection Priority Chart

INFOID:0000000000972106

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.

DTC Index

INFOID:0000000000972107

Mode

Warning

lamp

DTC

Detected area (Error area)

Error area and root cause

Protection

function

Blinking

—

4WD control unit

Transfer assembly in protection mode
(Internal temperature rise of electronic controlled coupling)

Blinking

—

Outer diameters of front and
rear wheel tires

Malfunction in each tire or different tire diameter

Fail-safe

C1201

4WD control unit

Internal malfunction of 4WD control unit

C1203

ABS actuator and electric
unit (control unit)

ABS malfunction
• Vehicle speed signal error
• Stop lamp switch signal (brake signal) error

C1204

4WD solenoid

Internal malfunction of electronic controlled coupling

C1205

4WD control unit

Internal malfunction of 4WD control unit

C1209

4WD mode switch

Malfunction of 4WD mode switch or 4WD mode switch circuit

C1210

ECM

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

U1000

CAN communication line

CAN communication line error

U1010

4WD control unit

4WD control unit error

Priority

Detected items (DTC)

• U1000 CAN COMM CIRCUIT
• U1010 CONTROL UNIT (CAN)

• C1201 CONTROLLER FAILURE
• C1205 4WD ACTUATOR RLY

• C1203 ABS SYSTEM
• C1210 ENGINE SIGNAL 1

• C1204 4WD SOLENOID
• C1209 MODE SW

DTC

Items

(CONSULT-III screen terms)

Reference

C1201

CONTROLLER FAILURE

DLN-14, "Description"

C1203

ABS SYSTEM

DLN-15, "Description"

C1204

4WD SOLENOID

DLN-16, "Description"

C1205

4WD ACTUATOR RLY

DLN-19, "Description"

C1209

MODE SW

DLN-20, "Description"

C1210

ENGINE SIGNAL 1

DLN-23, "Description"

U1000

CAN COMM CIRCUIT

DLN-24, "Description"

U1010

CONTROL UNIT (CAN)

DLN-25, "Description"

DLN-38

< SYMPTOM DIAGNOSIS >

[TRANSFER: TY30A]

4WD SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

4WD SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000000972108

If 4WD warning lamp turns ON, perform self-diagnosis.

NOTE:

Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunction.

Symptom

Condition

Check item

Reference

4WD warning lamp does not turn ON when
the ignition switch is turned to ON.
(4WD warning lamp check)

Ignition switch: ON

Power supply and ground for 4WD con-
trol unit

DLN-39, "De-

scription"

CAN communication line

4WD control unit

Combination meter

4WD warning lamp does not turn OFF sev-
eral seconds after engine started.

Engine running

4WD control unit self-diagnosis

DLN-40, "De-

scription"

4WD warning lamp

Power supply and ground for 4WD con-
trol unit

Heavy tight-corner braking symptom occurs
when the vehicle is driven and the steering
wheel is turned fully to either side after the
engine is started. (See NOTE.)

• While driving
• Steering wheel is

turned fully to either
sides

ECM self-diagnosis

DLN-41, "De-

scription"

4WD control unit self-diagnosis

4WD solenoid

Mechanical malfunction of electric con-
trolled coupling (clutch sticking etc.)

Vehicle does not enter 4WD mode even
though 4WD warning lamp turned to OFF.

While driving

CAN communication line

DLN-42, "De-

scription"

4WD solenoid

Mechanical malfunction of electric con-
trolled coupling (Mechanical engage-
ment of clutch is not possible.)

While driving, 4WD warning lamp blinks
quickly. (When blinking in approx. 1 minute
and then turning OFF.)
Quick blinking: 2 times/second

While driving

Protection function is activated due to
heavy load to electric controlled cou-
pling. (4WD system is not malfunction-
ing. Also, optional distribution of torque
sometimes becomes rigid before lamp
blinks quickly, but it is not malfunction.)

DLN-43, "De-

scription"

While driving, 4WD warning lamp blinks
slowly. (When continuing to blink until turn-
ing ignition switch OFF)
Slow blinking: 1 time/2 seconds

• While driving
• Vehicle speed: 20 km/h

(12 MPH) or more

Tire size is different between front and
rear of vehicle.

DLN-44, "De-

scription"

4WD WARNING LAMP DOES NOT TURN ON

DLN-39

< SYMPTOM DIAGNOSIS >

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