Nissan Qashqai (2007-2010). Manual — part 610

DIAGNOSIS SYSTEM (4WD CONTROL UNIT)

DLN-13

< FUNCTION DIAGNOSIS >

[TRANSFER: TY30A]

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A

B

DLN

N

O

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×

: Standard

o

: Optional item

ACTIVE TEST MODE

Description

Use this mode to determine and identify the details of a malfunction based on self-diagnostic results or data
monitor. 4WD control unit gives drive signal to actuator with receiving command from CONSULT-III to check
operation of actuator.

Test Item

CAUTION:

Never energize continuously for a long time.

Monitor item (Unit)

Monitor Menu

Remarks

ECU INPUT

SIGNALS

MAIN

SIGNALS

BATTERY VOLT [V]

o

o

Power supply voltage for 4WD control unit

THRTL POS SEN [%]

o

o

Throttle opening status is displayed.

ETS SOLENOID [A]

o

o

Monitored value of current at 4WD solenoid

FR RH SENSOR [km/h] or [mph]

×

×

Wheel speed calculated by front wheel sensor RH sig-
nal is displayed.

FR LH SENSOR [km/h] or [mph]

×

×

Wheel speed calculated by front wheel sensor LH sig-
nal is displayed.

RR RH SENSOR [km/h] or [mph]

×

×

Wheel speed calculated by rear wheel sensor RH sig-
nal is displayed.

RR LH SENSOR [km/h] or [mph]

×

×

Wheel speed calculated by rear wheel sensor LH sig-
nal is displayed.

STOP LAMP SW [On/Off]

o

o

Stop lamp switch signal status via CAN communication
line is displayed.

ENG SPEED SIG [Run/Stop]

o

o

Engine status is displayed.

ETS ACTUATOR [On/Off]

o

o

Operating condition of 4WD actuator relay (integrated
in 4WD control unit) is displayed.

4WD WARN LAMP [On/Off]

o

o

Control status of 4WD warning lamp is displayed.

4WD MODE SW [2wd/Auto/Lock]

o

o

Mode switch is not equipped, but displayed.

4WD MODE MON [2wd/Auto/Lock]

o

o

Control status of 4WD is displayed.

DIS-TIRE MONI [mm]

o

o

Improper size tire installed condition is displayed.

P BRAKE SW [On/Off]

o

o

Parking switch signal status via CAN communication
line is displayed.

Test item

Condition

Description

ETS S/V
(Detects 4WD solenoid)

• Vehicle stopped
• Engine running
• No DTC detected

Change command current value to 4WD solenoid, and then change driving
mode. (Monitor value is normal if it is within approximately

±

10% of command

value.)
• Qu: Increase current value in increments of 0.1 A
• Qd: Decrease current value in increments of 0.1 A
• UP: Increase current value in increments of 0.02 A
• DOWN: Decrease current value in increments of 0.02 A

DLN-14

< COMPONENT DIAGNOSIS >

[TRANSFER: TY30A]

C1201 4WD CONTROL UNIT

COMPONENT DIAGNOSIS

C1201 4WD CONTROL UNIT

Description

INFOID:0000000000972077

• Controls driving force distribution by signals from each sensor from rear wheel driving mode (0:100) to 4WD

mode (50:50).

• 2WD mode is available by fail-safe function if malfunction is detected in 4WD system.

DTC Logic

INFOID:0000000000972078

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 “C1201” detected?

YES

>> Proceed to diagnosis procedure. Refer to

DLN-14, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000972079

1.

PERFORM SELF-DIAGNOSIS

With CONSULT-III

1.

Erase 4WD control unit self-diagnosis results.

2.

Turn ignition switch OFF, and then wait 10 seconds or more.

3.

Perform 4WD control unit self-diagnosis.

Is DTC “C1201” 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

C1201

CONTROLLER FAILURE

Malfunction has occurred inside 4WD
control unit.

Internal malfunction of 4WD control unit

C1203 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

DLN-15

< COMPONENT DIAGNOSIS >

[TRANSFER: TY30A]

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C1203 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Description

INFOID:0000000000972080

Transmits the following signals via CAN communication to 4WD control unit.
• Vehicle speed signal
• Stop lamp switch signal (brake signal)

DTC Logic

INFOID:0000000000972081

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Start engine and drive at 30 km/h (19 MPH) or more for approx. 1 minute.

2.

Perform 4WD control unit self-diagnosis.

Is DTC “C1203” detected?

YES

>> Proceed to diagnosis procedure. Refer to

DLN-15, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000972082

1.

PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS

With CONSULT-III

Perform ABS actuator and electric unit (control unit) 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.

Start engine and drive vehicle at 30 km/h (19 MPH) for at least 1 minute.

3.

Make sure that ABS warning lamp turns OFF.

4.

Perform 4WD control unit self-diagnosis.

Is DTC “C1203” 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

C1203

ABS SYSTEM

Malfunction related to wheel sensor has
been detected by ABS actuator and
electric unit (control unit).

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

error

DLN-16

< COMPONENT DIAGNOSIS >

[TRANSFER: TY30A]

C1204 4WD SOLENOID

C1204 4WD SOLENOID

Description

INFOID:0000000000972083

Controls electric controlled coupling by command current from 4WD control unit.

DTC Logic

INFOID:0000000000972084

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 “C1204” detected?

YES

>> Proceed to diagnosis procedure. Refer to

DLN-16, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000972085

1.

CHECK 4WD SOLENOID POWER SUPPLY

1.

Turn the ignition switch OFF.

2.

Disconnect 4WD control unit harness connector.

3.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

4.

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

Is the inspection result normal?

YES

>> GO TO 2.

NO

>>

Check the following. If any items are damaged, repair or replace damaged parts.

• 10A fuse (#32) open
- Short among 10A fuse (#32) connector, 4WD control unit harness connector No. 9 terminal and

the ground

- Open between the battery and 4WD control unit harness connector No. 9 terminal

2.

CHECK 4WD SOLENOID GROUND

1.

Turn the ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> GO TO 3.

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

C1204

4WD SOLENOID

Malfunction related to 4WD solenoid has
been detected.

Internal malfunction of electronic con-
trolled coupling

4WD control unit

Voltage (Approx.)

Connector

Terminal

M69

9 – Ground

Battery voltage

4WD control unit

Continuity

Connector

Terminal

M69

10 – Ground

Existed

11 – Ground