Nissan X-Trail 32. Manual - part 1169

B20D2 PARKING LAMP POWER SUPPLY CIRCUIT

EXL-133

< DTC/CIRCUIT DIAGNOSIS >

[LED HEADLAMP]

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

Parking lamp RH

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the corresponding front combination lamp. Refer to 

EXL-191, "Removal and Installation"

.

Front combination lamp RH

Resistance

Terminal

6

8

Except 0 

Ω

EXL-134

< DTC/CIRCUIT DIAGNOSIS >

[LED HEADLAMP]

B20D4 TAIL LAMP LH POWER SUPPLY CIRCUIT

B20D4 TAIL LAMP LH POWER SUPPLY CIRCUIT

DTC Description

INFOID:0000000010788824

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connector
• Tail lamp LH (body side) bulb
• Tail lamp LH (back door side) bulb
• Tail lamp LH (body side) bulb socket or harness
• Tail lamp LH (back door side) bulb socket or harness
• License plate lamp LH bulb
• License plate lamp RH bulb
• License plate lamp LH bulb socket
• License plate lamp RH bulb socket
• IPDM E/R

FAIL-SAFE

Shuts off the power supply to the following power supply circuits until the parking lamp, license plate lamp, and
tail lamp ON conditions are no longer satisfied.
• Tail lamp LH (body side)
• Tail lamp LH (back door side)
• License plate lamp LH
• License plate lamp RH

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

With CONSULT

1.

Turn ignition switch ON.

2.

Select “T LAMP LH CIRC MALFUNCTN” in “Data Monitor” mode of “IPDM E/R” using CONSULT.

3.

Check the monitor status.

What is the monitor status?

“0”

>> GO TO 2.

“1”

>> A short circuit is detected multiple times in the tail lamp LH (body side), tail lamp LH (back door

side), license plate lamp LH or license plate lamp RH power supply circuit, and damage accumu-
lates at the smart FET inside the IPDM E/R. For this reason, IPDM E/R does not turn ON the
smart FET. Because the DTC cannot be reproduced in this state, perform 

EXL-135, "Diagnosis

Procedure"

 and replace IPDM E/R after the malfunctioning part is repaired. Refer to 

PCS-60,

"Removal and Installation"

. 

2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B20D4

TAIL LAMP LH PWR SPLY CIRC
(Tail lamp left hand power supply circuit)

[CIRC 
SHORT TO 
GRND]

When the parking lamp, license plate lamp, and tail lamp 
ON conditions are satisfied (smart FET inside IPDM E/R 
is ON), and overcurrent is detected in the following power 
supply circuit.
• Tail lamp LH (body side)
• Tail lamp LH (back door side)
• License plate lamp LH
• License plate lamp RH

Monitor item

Monitor status

T LAMP LH CIRC MALFUNCTN

0

1

B20D4 TAIL LAMP LH POWER SUPPLY CIRCUIT

EXL-135

< DTC/CIRCUIT DIAGNOSIS >

[LED HEADLAMP]

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

1.

Turn ignition switch OFF.

2.

Turn ignition switch ON.

3.

Turn lighting switch 1ST.

4.

Select “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT.

5.

Check DTC.

Is DTC detected?

YES

>> Refer to 

EXL-135, "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:0000000010788825

1.

CHECK TAIL LAMP LH POWER SUPPLY CIRCUIT (SHORT)

1.

Turn ignition switch OFF.

2.

Turn lighting switch OFF.

3.

Disconnect the following connectors.

-

IPDM E/R

-

Rear combination lamp LH (body side)

-

Rear combination lamp LH (back door side)

-

License plate lamp LH

-

License plate lamp RH

4.

Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness.

2.

CHECK TAIL LAMP LH POWER SUPPLY

With CONSULT

1.

Connect IPDM E/R connector.

2.

Turn ignition switch ON

3.

Select “TAIL LAMP” in “Active Test” mode of “IPDM E/R” using CONSULT.

4.

With operating the test items, check the voltage between rear combination lamp LH (body side) harness
connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace IPDM E/R. Refer to 

PCS-60, "Removal and Installation"

.

3.

CHECK TAIL LAMP LH

Check the tail lamp LH. Refer to 

EXL-136, "Component Inspection (Tail Lamp)"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the malfunctioning part.

4.

CHECK LICENSE PLATE LAMP

IPDM E/R 

—

Continuity

Connector

Terminal

E10

4

Ground

Not existed

+

-

Test item

Voltage

Rear combination lamp LH (body 

side)

Connector

Terminal

B80

1

Ground

TAIL LAMP

On

9 – 16 V

Off

0 – 1 V

EXL-136

< DTC/CIRCUIT DIAGNOSIS >

[LED HEADLAMP]

B20D4 TAIL LAMP LH POWER SUPPLY CIRCUIT

Check the license plate lamp. Refer to 

EXL-136, "Component Inspection (License Plate Lamp)"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace the malfunctioning part.

Component Inspection (Tail Lamp)

INFOID:0000000010788826

1.

CHECK TAIL LAMP LH

1.

Turn ignition switch OFF.

2.

Disconnect rear combination lamp LH (body side) and rear combination lamp LH (back door side) connec-
tor.

3.

Check resistance of rear combination lamp LH (body side) and rear combination lamp LH (back door side)
terminals.

Rear combination lamp LH (body side)

Tail lamp LH (back door side)

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK TAIL LAMP LH

1.

Remove tail lamp LH bulb

2.

Check resistance of rear combination lamp LH (body side) and rear combination lamp LH (back door side)
terminals.

Rear combination lamp LH (body side)

Tail lamp LH (back door side)

Is the inspection result normal?

YES

>> Replace the corresponding tail lamp LH bulb. Refer to 

EXL-204, "REAR COMBINATION LAMP

(BODY SIDE) : Replacement"

 (body side) or 

EXL-206, "REAR COMBINATION LAMP (BACK

DOOR SIDE) : Replacement"

 (back door side).

NO

>> Repair or replace the corresponding tail lamp LH bulb socket and harness.

Component Inspection (License Plate Lamp)

INFOID:0000000010788827

1.

CHECK LICENSE PLATE LAMP

1.

Turn ignition switch OFF.

2.

Disconnect license plate lamp connector.

3.

Check resistance of license plate lamp terminals.

Rear combination lamp LH (body 

side)

Resistance

Terminal

1

4

Except 0 

Ω

Rear combination lamp LH (back 

door side)

Resistance

Terminal

1

3

Except 0 

Ω

Rear combination lamp LH (body 

side)

Resistance

Terminal

1

4

Except 0 

Ω

Rear combination lamp LH (back 

door side)

Resistance

Terminal

1

3

Except 0 

Ω