Nissan X-Trail 32. Manual - part 686

 

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Nissan X-Trail 32. Manual - part 686

 

 

P1804 4WD CONTROL UNIT

DLN-155

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: TY30A]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

P1804 4WD CONTROL UNIT

DTC Description

INFOID:0000000011004009

DTC DETECTION LOGIC

POSSIBLE CAUSE

Internal malfunction of 4WD control unit.

FAIL-SAFE

4WD control changes to front-wheel drive immediately, then 4WD control stops, and the vehicle becomes
front-wheel drive.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC REPRODUCTION PROCEDURE

With CONSULT

1.

Turn the ignition switch ON.

2.

Perform self-diagnosis for “ALL MODE AWD/4WD”.

Is DTC “P1804” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-155, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000011004010

1.

REPLACE 4WD CONTROL UNIT 

CAUTION:

Replace 4WD control unit when DTC “P1804” is detected simultaneously with other items.

>> Replace 4WD control unit. Refer 

DLN-179, "Removal and Installation"

.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1804

CONTROL UNIT
(Control unit)

Malfunction is detected in the memory (EEPROM) system of 
4WD control unit.

DLN-156

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: TY30A]

P1808 WHEEL SPEED SENSOR

P1808 WHEEL SPEED SENSOR

DTC Description

INFOID:0000000011004011

DTC DETECTION LOGIC

POSSIBLE CAUSE

• ABS malfunction
• Internal malfunction of 4WD control unit

FAIL-SAFE

4WD control changes to front-wheel drive gradually (rear-wheels still have some driving torque), then 4WD
control stops, and the vehicle becomes front-wheel drive.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC REPRODUCTION PROCEDURE

With CONSULT

1.

Turn the ignition switch ON.

2.

Perform self-diagnosis for “ALL MODE AWD/4WD”.

Is DTC “P1808” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-156, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000011004012

1.

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

With CONSULT

Perform self-diagnosis for “ABS”.

Is any DTC detected?

YES

>> Check the DTC. Refer to 

BRC-84, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK TERMINALS AND HARNESS CONNECTORS

Check 4WD control unit pin terminals for damage or loose connection with harness connector.
Is inspection result normal?

YES

>> After turning the ignition switch OFF, perform DTC confirmation procedure again. If DTC “P1808”

is detected, Replace 4WD control unit. Refer to 

DLN-179, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1808

VHCL SPEED SEN-ABS
(Vehicle speed sensor-ABS)

• Malfunction is detected in vehicle speed signal that is out-

put from ABS actuator and electric unit (control unit) 
through CAN communication.

• Improper signal is input while driving.

P1809 4WD CONTROL UNIT

DLN-157

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: TY30A]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

P1809 4WD CONTROL UNIT

DTC Description

INFOID:0000000011004013

DTC DETECTION LOGIC

POSSIBLE CAUSE

Internal malfunction of 4WD control unit

FAIL-SAFE

4WD control changes to front-wheel drive immediately, then 4WD control stops, and the vehicle becomes
front-wheel drive.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC REPRODUCTION PROCEDURE

With CONSULT

1.

Turn the ignition switch ON.

2.

Perform self-diagnosis for “ALL MODE AWD/4WD”.

Is DTC “P1809” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-157, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000011004014

1.

REPLACE 4WD CONTROL UNIT 

CAUTION:

Replace 4WD control unit when DTC “P1809” is detected simultaneously with other items.

>> Replace 4WD control unit. Refer 

DLN-179, "Removal and Installation"

.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1809

CONTROL UNIT
(Control unit)

AD converter system of 4WD control unit is malfunctioning.

DLN-158

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: TY30A]

P1811 BATTERY VOLTAGE

P1811 BATTERY VOLTAGE

DTC Description

INFOID:0000000011004015

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Malfunction of 4WD control unit power supply circuit (open or short)
• Battery power supply
• Ignition power supply
• Internal malfunction of 4WD control unit

FAIL-SAFE

4WD control changes to front-wheel drive immediately, then 4WD control stops, and the vehicle becomes
front-wheel drive.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC REPRODUCTION PROCEDURE

With CONSULT

1.

Turn the ignition switch ON.

2.

Perform self-diagnosis for “ALL MODE AWD/4WD”.

Is DTC “P1811” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-158, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000011004016

1.

CHECK 4WD CONTROL UNIT POWER SUPPLY (1)

1.

Turn the ignition switch OFF.

2.

Disconnect 4WD control unit harness connector.

3.

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

4.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

5.

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

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1811

BATTERY VOLTAGE
(Battery voltage)

When engine is running and 4WD control unit power supply 
is less than 9 V or higher than 16 V.

4WD control unit

Voltage (Approx.)

Connector

Terminal

B5

7

Ground

0 V

4WD control unit

Voltage 

Connector

Terminal

B5

7

Ground

Battery voltage

 

 

 

 

 

 

 

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