Nissan Maxima. Manual - part 614

EXL-198

< SYSTEM DESCRIPTION >

[HALOGEN TYPE]

DIAGNOSIS SYSTEM (IPDM E/R)

ACTIVE TEST

CAN DIAG SUPPORT MNTR

Refer to 

LAN-12, "CAN Diagnostic Support Monitor"

.

HL HI REQ [On/Off]

×

Indicates high beam request signal received from BCM on CAN communication 
line

FR FOG REQ [On/Off]

×

Indicates front fog light request signal received from BCM on CAN communica-
tion line

FR WIP REQ [Stop/1LOW/Low/Hi]

×

Indicates front wiper request signal received from BCM on CAN communication 
line

WIP AUTO STOP [STOP P/ACT P]

×

Indicates condition of front wiper auto stop signal

WIP PROT [Off/BLOCK]

×

Indicates condition of front wiper fail-safe operation

IGN RLY1 -REQ [On/Off]

Indicates ignition switch ON signal received from BCM on CAN communication 
line

IGN RLY [On/Off]

×

Indicates condition of ignition relay-1

PUSH SW [On/Off]

Indicates condition of push-button ignition switch

INTER/NP SW [On/Off]

Indicates condition of CVT shift position

ST RLY CONT [On/Off]

Indicates starter relay status signal received from BCM on CAN communication 
line

IHBT RLY -REQ [On/Off]

Indicates starter control relay signal received from BCM on CAN communication 
line

ST/INHI RLY [Off/ ST /INHI]

Indicates condition of starter relay and starter control relay

DETENT SW [On/Off]

Indicates condition of CVT shift selector (park position switch)

DTRL REQ [Off]

Indicates daytime light request signal received from BCM on CAN communica-
tion line

OIL P SW [Open/Close]

Indicates condition of oil pressure switch

THFT HRN REQ [On/Off]

Indicates theft warning horn request signal received from BCM on CAN commu-
nication line

HORN CHIRP [On/Off]

Indicates horn reminder signal received from BCM on CAN communication line

Monitor Item [Unit]

Main

Signals

Description

Test item

Description

HORN

This test is able to check horn operation [On].

FRONT WIPER

This test is able to check wiper motor operation [Hi/Lo/Off].

MOTOR FAN

This test is able to check cooling fan operation [4/3/2/1].

EXTERNAL LAMPS

This test is able to check external lamp operation [Fog/Hi/Lo/Tail/Off].

POWER SUPPLY AND GROUND CIRCUIT

EXL-199

< DTC/CIRCUIT DIAGNOSIS >

[HALOGEN TYPE]

C

D

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F

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EXL

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DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000010070070

Regarding Wiring Diagram information, refer to 

BCS-67, "Wiring Diagram"

.

1.

 CHECK FUSE AND FUSIBLE LINK

Check if the following BCM fuses or fusible link are blown.

Is the fuse or fusible link blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM.

3. Check voltage between BCM harness connector and ground.

Is the measurement normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

BCM (BODY CONTROL MODULE) : Special Repair Requirement

INFOID:0000000010070071

1.

 REQUIRED WORK WHEN REPLACING BCM

Terminal No.

Signal name

Fuse and fusible link No.

1

Battery power supply

H

11

10

24

7

Terminals

Voltage

(Approx.)

(+)

(

−)

BCM

Ground

Connector

Terminal

M16

1

Battery voltage

M17

11

M18

24

BCM

Ground

Continuity

Connector

Terminal

M17

13

Yes

EXL-200

< DTC/CIRCUIT DIAGNOSIS >

[HALOGEN TYPE]

POWER SUPPLY AND GROUND CIRCUIT

Initialize control unit. Refer to 

BCS-5, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) :

Work Procedure"

.

>> Work End.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure

INFOID:0000000010070073

Regarding Wiring Diagram information, refer to 

PCS-28, "Wiring Diagram"

.

1.

 CHECK FUSES AND FUSIBLE LINK

Check that the following IPDM E/R fuses or fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R connectors.

3. Check voltage between IPDM E/R harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

 CHECK GROUND CIRCUIT

Check continuity between IPDM E/R harness connectors and

ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

Terminal No.

Signal name

Fuses and fusible link No.

1

Battery power supply

B

2

A, D

36

A, E, L

Terminals

Voltage (V)

(Approx.)

(+)

(

−)

IPDM E/R

Connector

Terminal

Ground

E16

1

Battery voltage

2

E18

36

IPDM E/R

Ground

Continuity

Connector

Terminal

A: E18

12

Yes

B: E17

41

ALCIA0034ZZ

HEADLAMP (HI) CIRCUIT

EXL-201

< DTC/CIRCUIT DIAGNOSIS >

[HALOGEN TYPE]

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HEADLAMP (HI) CIRCUIT

Description

INFOID:0000000010051057

The IPDM E/R (intelligent power distribution module engine room) controls the headlamp high relay based on

inputs from the BCM over the CAN communication lines. When the headlamp high relay is energized, power

flows through fuses 48 and 49, located in the IPDM E/R. Power then flows to the front combination lamps to

the headlamp high beam.

Component Function Check

INFOID:0000000010051058

1.

CHECK HEADLAMP (HI) OPERATION

WITHOUT CONSULT

1. Start IPDM E/R auto active test. Refer to 

PCS-11, "Diagnosis Description"

.

2. Check that the headlamp switches to the high beam.

NOTE:

HI/LO is repeated 1 second each when using the IPDM E/R auto active test.

CONSULT

1. Select "EXTERNAL LAMPS" of IPDM E/R active test item.

2. While operating the test item, check that the headlamp switches to the high beam.

Does the headlamp switch to the high beam?

YES

>> Headlamp (HI) circuit is normal.

NO

>> Refer to 

EXL-201, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010051059

Regarding Wiring Diagram information, refer to 

EXL-257, "Wiring Diagram"

 (without DTRL),

EXL-263, "Wiring

Diagram"

 (With DTRL).

1.

CHECK HEADLAMP (HI) FUSES

1. Turn the ignition switch OFF.

2. Check that the following fuses are not open.

Is the fuse open?

YES

>> Repair the harness and replace the fuse.

NO

>> GO TO 2.

2.

CHECK HEADLAMP (HI) OUTPUT VOLTAGE

CONSULT ACTIVE TEST

1. Turn the ignition switch OFF.

2. Disconnect the front combination lamp connector.

3. Turn the ignition switch ON.

4. Select "EXTERNAL LAMPS" of IPDM E/R active test item.

HI

: Headlamp switches to the high beam.

OFF

: Headlamp OFF

Unit

Location

Fuse No.

Capacity

Headlamp HI (LH) 

IPDM E/R

48

10A

Headlamp HI (RH) 

IPDM E/R

49

10A