Nissan Pathfinder (2010 year). Manual - part 395

EXL-26

< FUNCTION DIAGNOSIS >

TRAILER TOW

TRAILER TOW

System Diagram

INFOID:0000000005527116

System Description

INFOID:0000000005527117

TRAILER TAIL LAMP OPERATION

The trailer tail lamps are controlled by the trailer tow relay 1 located in the IPDM E/R. With the combination

switch in the 1st position, the BCM detects the LIGHTING SWITCH 1ST POSITION ON. The BCM sends a

parking light ON request via the CAN communication lines to the IPDM E/R. The IPDM E/R then activates the

tail lamp relay which activates the trailer tow relay 1 and sends power to the trailer connector.

TRAILER TURN SIGNAL LAMP OPERATION

The trailer turn signal lamps are controlled by the BCM. When the turn signal switch is in the LH or RH position

with the ignition switch ON, the combination switch sends a signal to the BCM. The BCM detects the TURN

RH or TURN LH ON request. The BCM sends a control signal to the respective trailer turn relay which sends

power to the trailer connector.

TRAILER HAZARD LAMP OPERATION

The trailer hazard lamps are controlled by the BCM. When the hazard switch is pressed, the BCM detects the

the hazard ON request. The BCM then sends a control signal to both trailer turn relays which sends power to

the trailer connector.

TRAILER BRAKE LAMP OPERATION

The trailer brake lamps are controlled by the BCM. When the brake pedal is depressed, the combination meter

receives a stop lamp switch signal from the stop lamp switch. The combination meter then sends the brake

signal to the BCM via the CAN communication lines. The BCM then sends a control signal to both trailer turn

relays which sends power to the trailer connector. 

AWLIA1764GB

2010 Pathfinder

TRAILER TOW

EXL-27

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

Component Parts Location

INFOID:0000000005527118

Component Description

INFOID:0000000005527119

1.

Stop lamp switch E38 (view with lower 
instrument panel LH removed)

2.

Brake pedal

3.

BCM, M18, M19, M20 (view with lower 
instrument panel LH removed)

4.

Trailer turn relay LH E163

5.

IPDM E/R E121, E122, E124

6.

Trailer turn relay RH E164

7.

Trailer tow relay 2 E140

8.

Trailer tow relay 1 E148

9.

Combination switch (lighting and turn 
signal switch) M28

10. Combination meter M24

AWLIA1765GB

Part name

Description

BCM

• Receives lighting and turn signal requests from combination 

switch.

• Receives stop lamp signal requests from combination meter via 

CAN communication.

• Sends lighting signal request to the IPDM E/R to control the tail 

lamp relay via CAN communication.

• Sends turn/hazard/brake control signal to the trailer turn relays.

IPDM E/R

Activates the tail lamp relay upon request from the BCM via CAN 
communication.

Combination meter

• Receives stop lamp switch signal from stop lamp switch.
• Sends stop lamp signal request to the BCM via CAN communi-

cation.

Combination switch (lighting and turn signal switch)

Outputs lighting and turn signal requests to the BCM.

2010 Pathfinder

EXL-28

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

HEADLAMP
HEADLAMP : CONSULT-III Function (BCM - HEAD LAMP)

INFOID:0000000005501511

WORK SUPPORT

*: Initial setting

DATA MONITOR

ACTIVE TEST

Work Item

Setting item

Setting

BATTERY SAVER SET

ON*

With the exterior lamp battery saver function

OFF

Without the exterior lamp battery saver function

CUSTOM A/LIGHT SET-
TING

MODE1*

Normal

MODE2

More sensitive setting than normal setting (Turns ON earlier than normal operation.)

MODE3

More sensitive setting than MODE 2 (Turns ON earlier than MODE 2.)

MODE4

Less sensitive setting than normal setting (Turns ON later than normal operation.)

ILL DELAY SET

MODE1*

45 sec.

Sets delay timer function timer operation time
(All doors closed)

MODE2

Without the func-
tion

MODE3

30 sec.

MODE4

60 sec.

MODE5

90 sec.

MODE6

120 sec.

MODE7

150 sec.

MODE8

180 sec.

Monitor Item

[Unit]

Description

IGN ON SW [ON/OFF]

Ignition switch (ON) status judged from IGN signal (ignition power supply)

ACC ON SW [ON/OFF]

Ignition switch (ACC) status judged from ACC signal (accessory power supply)

HI BEAM SW [ON/OFF]

Each switch status that BCM judges from the combination switch reading function

HEAD LAMP SW 1 [ON/OFF]

HEAD LAMP SW 2 [ON/OFF]

LIGHT SW 1ST [ON/OFF]

AUTO LIGHT SW [ON/OFF]

PASSING SW [ON/OFF]

FR FOG SW [ON/OFF]

TURN SIGNAL R [ON/OFF]

TURN SIGNAL L [ON/OFF]

DOOR SW-DR [ON/OFF]

The switch status input from front door switch LH

DOOR SW-AS [ON/OFF]

The switch status input from front door switch RH

DOOR SW-RR [ON/OFF]

The switch status input from rear door switch RH

DOOR SW-RL [ON/OFF]

The switch status input from rear door switch LH

BACK DOOR SW [ON/OFF]

The switch status input from back door switch

CARGO LAMP SW [ON/OFF]

Cargo lamp status that BCM judges from the vehicle condition

OPTICAL SENSOR [ON/OFF]

The value of exterior brightness voltage input from the optical sensor

2010 Pathfinder

DIAGNOSIS SYSTEM (BCM)

EXL-29

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

FLASHER
FLASHER : CONSULT-III Function (BCM - FLASHER)

INFOID:0000000005501512

DATA MONITOR

ACTIVE TEST

COMB SW
COMB SW : CONSULT-III Function (BCM - COMB SW)

INFOID:0000000005501513

DATA MONITOR

Test Item

Operation

Description

TAIL LAMP

ON

Transmits the position light request signal to IPDM E/R with CAN com-
munication to turn the tail lamp ON.

OFF

Stops the tail lamp request signal transmission.

HEAD LAMP

HI

Transmits the high beam request signal with CAN communication to turn 
the headlamp (HI).

LO

Transmits the low beam request signal with CAN communication to turn 
the headlamp (LO).

OFF

Stops the high & low beam request signal transmission.

FR FOG LAMP

ON

Transmits the front fog lights request signal to IPDM E/R with CAN com-
munication to turn the front fog lamp ON.

OFF

Stops the front fog lights request signal transmission.

CARGO LAMP

ON

Transmits the cargo lamp request signal to IPDM E/R with CAN commu-
nication to turn the each lamp ON.

OFF

Stops the day time running light request signal transmission.

Monitor Item

[Unit]

Description

IGN ON SW [ON/OFF]

Ignition switch (ON) status judged from IGN signal (ignition power supply)

HAZARD SW [ON/OFF]

The switch status input from the hazard switch

TURN SIGNAL R [ON/OFF]

Each switch condition that BCM judges from the combination switch reading function

TURN SIGNAL L [ON/OFF]

BRAKE SW [ON/OFF]

The switch status input from the brake switch

Test Item

Operation

Description

FLASHER

RH

Outputs the voltage to turn the right side turn signal lamps ON.

LH

Outputs the voltage to turn the left side turn signal lamps ON.

OFF

Stops the voltage to turn the turn signal lamps OFF.

Monitor Item

[Unit]

Description

TURN SIGNAL R 
[OFF/ON]

Displays the status of the TURN RH switch in combination switch judged by BCM with the combination switch 
reading function

TURN SIGNAL L 
[OFF/ON]

Displays the status of the TURN LH switch in combination switch judged by BCM with the combination switch 
reading function

HI BEAM SW 
[OFF/ON]

Displays the status of the HI BEAM switch in combination switch judged by BCM with the combination switch 
reading function

HEAD LAMP SW1
[OFF/ON]

Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination 
switch reading function

2010 Pathfinder

EXL-30

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (BCM)

HEAD LAMP SW2
[OFF/ON]

Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination 
switch reading function

LIGHT SW 1ST
[OFF/ON]

Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination 
switch reading function

PASSING SW
[OFF/ON]

Displays the status of the PASSING switch in combination switch judged by BCM with the combination switch 
reading function

AUTO LIGHT SW
[OFF/ON]

Displays the status of the AUTO LIGHT switch in combination switch judged by BCM with the combination 
switch reading function

FR FOG SW
[OFF/ON]

Displays the status of the FR FOG switch in combination switch judged by BCM with the combination switch 
reading function

FR WIPER HI
[OFF/ON]

Displays the status of the FR WIPER HI switch in combination switch judged by BCM with the combination 
switch reading function

FR WIPER LOW
[OFF/ON]

Displays the status of the FR WIPER LOW switch in combination switch judged by BCM with the combination 
switch reading function

FR WIPER INT
[OFF/ON]

Displays the status of the FR WIPER INT switch in combination switch judged by BCM with the combination 
switch reading function

FR WASHER SW
[OFF/ON]

Displays the status of the FR WASHER switch in combination switch judged by BCM with the combination 
switch reading function

INT VOLUME
[1 - 7]

Displays the status of wiper intermittent dial position judged by BCM with the combination switch reading 
function

RR WIPER ON
[OFF/ON]

Displays the status of the RR WIPER switch in combination switch judged by BCM with the combination 
switch reading function

RR WIPER INT
[OFF/ON]

Displays the status of the RR WIPER INT switch in combination switch judged by BCM with the combination 
switch reading function

RR WASHER SW
[OFF/ON]

Displays the status of the RR WASHER switch in combination switch judged by BCM with the combination 
switch reading function

Monitor Item

[Unit]

Description

2010 Pathfinder

DIAGNOSIS SYSTEM (IPDM E/R)

EXL-31

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

DIAGNOSIS SYSTEM (IPDM E/R)

Diagnosis Description

INFOID:0000000005501514

AUTO ACTIVE TEST

Description

In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.

• Oil pressure low warning indicator

• Oil pressure gauge

• Rear window defogger

• Front wipers

• Tail, license and parking lamps

• Front fog lamps (if equipped)

• Headlamps (Hi, Lo)

• A/C compressor (magnetic clutch)

• Cooling fan

Operation Procedure

1. Close the hood and front door RH, and lift the wiper arms from the windshield (to prevent windshield dam-

age due to wiper operation).

NOTE:

When auto active test is performed with hood opened, sprinkle water on windshield before hand.

2. Turn ignition switch OFF.
3. Turn the ignition switch ON and, within 20 seconds, press the front door switch LH 10 times. Then turn the

ignition switch OFF.

4. Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test

starts.

5. After a series of the following operations is repeated 3 times, auto active test is completed.

NOTE:

When auto active test mode has to be cancelled halfway through test, turn ignition switch OFF.

CAUTION:

• If auto active test mode cannot be actuated, check door switch system. Refer to 

DLK-55, "Descrip-

tion"

 (with Intelligent Key system), 

DLK-226, "Description"

 (without Intelligent Key system).

• Do not start the engine.

Inspection in Auto Active Test Mode

When auto active test mode is actuated, the following 7 steps are repeated 3 times.

Operation 
sequence

Inspection Location

Operation

1

Rear window defogger

10 seconds 

2

Front wipers

LO for 5 seconds 

→

 HI for 5 seconds

WKIA4991E

2010 Pathfinder

EXL-32

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (IPDM E/R)

Concept of auto active test

• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-

tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto

active test starts successfully.

• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.

Diagnosis chart in auto active test mode

3

Tail, license, front fog and parking lamps

10 seconds

4

Headlamps

LO for 10 seconds 

→

 HI on-off for 5 seconds

5

A/C compressor (magnetic clutch)

ON 

⇔

 OFF 5 times

6

Cooling fan

10 seconds

Operation 
sequence

Inspection Location

Operation

AWMIA1124GB

Symptom

Inspection contents

Possible cause

Oil pressure low warning indicator does not operate

Perform auto active test.
Does the oil pressure low 
warning indicator operate?

YES

• IPDM E/R signal input cir-

cuit

• ECM signal input circuit
• CAN communication signal 

between ECM and combi-
nation meter

NO

• CAN communication signal 

between IPDM E/R, BCM 
and combination meter

Oil pressure gauge does not operate

Perform auto active test.
Does the oil pressure gauge 
operate?

YES

IPDM E/R signal input circuit

NO

• CAN communication signal 

between IPDM E/R, BCM 
and combination meter

Rear window defogger does not operate

Perform auto active test.
Does the rear window defog-
ger operate?

YES

BCM signal input circuit

NO

• Harness or connector be-

tween A/C and AV switch 
assembly and AV control 
unit

• CAN communication signal 

between BCM and IPDM E/
R

2010 Pathfinder

DIAGNOSIS SYSTEM (IPDM E/R)

EXL-33

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

CONSULT - III Function (IPDM E/R)

INFOID:0000000005501515

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with IPDM E/R.

SELF DIAGNOSTIC

Refer to 

EXL-135, "DTC Index"

.

DATA MONITOR

Monitor item

Any of the following components do not operate

• Front wipers
• Tail  lamps
• License plate lamps
• Parking  lamps
• Front fog lamps (if equipped)
• Headlamps (Hi, Lo)

Perform auto active test.
Does the applicable system 
operate?

YES

BCM signal input system

NO

• Lamp or front wiper motor 

malfunction

• Lamp or front wiper motor 

ground circuit

• Harness or connector be-

tween IPDM E/R and appli-
cable system

• IPDM E/R (integrated relay 

malfunction)

A/C compressor does not operate

Perform auto active test.
Does the A/C compressor op-
erate?

YES

• BCM signal input circuit
• CAN communication signal 

between BCM and ECM

• CAN communication signal 

between ECM and IPDM E/
R

NO

• Magnetic clutch malfunction
• Harness or connector be-

tween IPDM E/R and mag-
netic clutch

• IPDM E/R (integrated relay 

malfunction)

Cooling fan does not operate

Perform auto active test.
Does the cooling fan operate?

YES

• ECM signal input circuit
• CAN communication signal 

between ECM and IPDM E/
R

NO

• Cooling fan motor malfunc-

tion

• Harness or connector be-

tween IPDM E/R and cool-
ing fan

• IPDM E/R (integrated relay 

malfunction)

Symptom

Inspection contents

Possible cause

Diagnosis mode

Description

Self Diagnostic Result

Displays the diagnosis results judged by IPDM E/R.

Data Monitor

Displays the real-time input/output data from IPDM E/R input/output data.

Active Test

IPDM E/R can provide a drive signal to electronic components to check their operations.

CAN Diag Support Monitor

The results of transmit/receive diagnosis of CAN communication can be read.

Monitor Item

[Unit]

MAIN SIG-

NALS

Description

MOTOR FAN REQ
[1/2/3/4]

×

Displays the status of the cooling fan speed request signal received from ECM via 
CAN communication.

AC COMP REQ
[OFF/ON]

×

Displays the status of the A/C request signal received from AV control unit via 
CAN communication.

2010 Pathfinder