Nissan X-Trail 32. Manual - part 1168

B20D1 HEADLAMP (LO) RH POWER SUPPLY CIRCUIT

EXL-129

< DTC/CIRCUIT DIAGNOSIS >

[LED HEADLAMP]

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B20D1 HEADLAMP (LO) RH POWER SUPPLY CIRCUIT

DTC Description

INFOID:0000000010788818

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connector
• Front combination lamp RH internal circuit
- LED [Headlamp (LO)]
- LED headlamp control module
- Harness
• IPDM E/R

FAIL-SAFE

Shuts off the power supply to the headlamp (LO) RH power supply circuit until the headlamp (LO) ON condi-
tions are no longer satisfied.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

With CONSULT

1.

Turn ignition switch ON.

2.

Select “HL (LO) RH 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 headlamp (LO) RH power supply circuit, and dam-

age accumulates 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-129, "Diag-

nosis 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

1.

Turn ignition switch OFF.

2.

Turn ignition switch ON.

3.

Turn lighting switch 2ND.

4.

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

5.

Check DTC.

Is DTC detected?

YES

>> Refer to 

EXL-129, "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:0000000010788819

1.

CHECK HEADLAMP (LO) RH POWER SUPPLY CIRCUIT (SHORT)

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B20D1

HL (LO) RH PWR SPLY CIRC
[Headlamp (low) left hand power supply cir-
cuit]

[CIRC 
SHORT TO 
GRND]

When headlamp (LO) ON conditions are satisfied (smart 
FET inside IPDM E/R is ON), and overcurrent is detected 
in the headlamp (LO) RH power supply circuit.

Monitor item

Monitor status

HL (LO) RH CIRC MALFUNCTN

0

1

EXL-130

< DTC/CIRCUIT DIAGNOSIS >

[LED HEADLAMP]

B20D1 HEADLAMP (LO) RH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Turn lighting switch OFF.

3.

Disconnect IPDM E/R connector and front combination lamp RH connector.

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 HEADLAMP (LO) RH POWER SUPPLY

With CONSULT

1.

Connect IPDM E/R connector.

2.

Turn ignition switch ON

3.

Select “HEADLAMP (LO)” in “Active Test” mode of “IPDM E/R” using CONSULT.

4.

With operating the test items, check the voltage between front combination lamp RH 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 HEADLAMP (LO) RH

Check the headlamp (LO) RH. Refer to 

EXL-130, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace front combination lamp RH. Refer to 

EXL-191, "Removal and Installation"

.

Component Inspection

INFOID:0000000010788820

1.

CHECK HEADLAMP (LO) RH

1.

Turn ignition switch OFF.

2.

Disconnect front combination lamp RH connector.

3.

Check resistance of front combination lamp RH terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace front combination lamp RH. Refer to 

EXL-191, "Removal and Installation"

.

IPDM E/R 

—

Continuity

Connector

Terminal

E149

62

Ground

Not existed

+

-

Test item

Voltage

Front combination lamp RH

Connector

Terminal

E155

3

Ground

HEADLAMP 
(LO)

On

9 – 16 V

Off

0 – 1 V

Front combination lamp RH

Resistance

Terminal

3

1

Except 0 

Ω

B20D2 PARKING LAMP POWER SUPPLY CIRCUIT

EXL-131

< DTC/CIRCUIT DIAGNOSIS >

[LED HEADLAMP]

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B20D2 PARKING LAMP POWER SUPPLY CIRCUIT

DTC Description

INFOID:0000000010788821

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connector
• Front combination lamp LH internal circuit
- LED (Parking lamp)
- Control circuit
- Harness
• Front combination lamp RH internal circuit
- LED (Parking lamp)
- Control circuit
- Harness
• IPDM E/R

FAIL-SAFE

Shuts off the power supply to the parking lamp (LH/RH) power supply circuit until the parking lamp, license
plate lamp, and tail lamp ON conditions are no longer satisfied.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

With CONSULT

1.

Turn ignition switch ON.

2.

Select “P LAMP 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 parking lamp LH or parking lamp RH power supply

circuit, and damage accumulates 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-132, "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

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-132, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B20D2

PARKING LAMP PWR SPLY CIRC
(Parking lamp 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 parking lamp LH 
power supply circuit or parking lamp RH power supply cir-
cuit.

Monitor item

Monitor status

P LAMP CIRC MALFUNCTN

0

1

EXL-132

< DTC/CIRCUIT DIAGNOSIS >

[LED HEADLAMP]

B20D2 PARKING LAMP POWER SUPPLY CIRCUIT

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010788822

1.

CHECK PARKING LAMP POWER SUPPLY CIRCUIT (SHORT)

1.

Turn ignition switch OFF.

2.

Turn lighting switch OFF.

3.

Disconnect IPDM E/R connector and front combination lamp connector.

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 PARKING LAMP POWER SUPPLY

With CONSULT

1.

Connect IPDM E/R connector.

2.

Turn ignition switch ON

3.

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

4.

With operating the test items, check the voltage between front combination lamp 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 PARKING LAMP

Check the parking lamp. Refer to 

EXL-132, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the corresponding front combination lamp. Refer to 

EXL-191, "Removal and Installation"

.

Component Inspection

INFOID:0000000010788823

1.

CHECK PARKING LAMP

1.

Turn ignition switch OFF.

2.

Disconnect front combination lamp connector.

3.

Check resistance of front combination lamp terminals.

Parking lamp LH

IPDM E/R 

—

Continuity

Connector

Terminal

RH

E149

61

Ground

Not existed

LH

E148

56

+

-

Test item

Voltage

Front combination lamp

Connector

Terminal

RH

E155

6

Ground

PARKING 
LAMP

On

9 – 16 V

Off

0 – 1 V

LH

E156

On

9 – 16 V

Off

0 – 1 V

Front combination lamp LH

Resistance

Terminal

6

8

Except 0 

Ω