Nissan Maxima. Manual - part 1222

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< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM)

WIPER : CONSULT Function (BCM - WIPER)

INFOID:0000000010053911

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

* : Initial setting

Monitor Item [Unit]

Description

PUSH SW [On/Off]

Indicates condition of push button ignition switch

VEH SPEED 1 [km/h]

Indicates vehicle speed signal received from ABS on CAN communication line

FR WIPER HI [On/Off]

Indicates condition of wiper operation of combination switch

FR WIPER LOW [On/Off]

FR WASHER SW [On/Off]

FR WIPER INT [On/Off]

FR WIPER STOP [On/Off]

Indicates front wiper auto stop signal received from IPDM E/R on CAN communication line

INT VOLUME [1 

− 7] 

Indicates condition of intermittent wiper operation of combination switch

Test Item

Description

FR WIPER

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

Support Item

Setting

Description

WIPER SPEED SETTING

On

Front wiper intermittent time linked with vehicle speed and wiper dial position

Off*

Front wiper intermittent time linked with wiper dial position

DIAGNOSIS SYSTEM (IPDM E/R)

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< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (IPDM E/R)

Diagnosis Description

INFOID:0000000010053912

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 warning lamp

• Front wiper (LO, HI)

• Parking lamps

• Side marker lamps

• License plate lamps

• Tail lamps

• Front fog lamps (if equipped)

• Headlamps (LO, HI)

• A/C compressor (magnet clutch)

• Cooling fans

Operation Procedure

1. Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper

operation)

NOTE:

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

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.

CAUTION:

Close front door RH.

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

starts.

5. The oil pressure warning lamp starts blinking when the auto active test starts.
6. 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-67,

"Component Function Check"

.

• Do not start the engine.

Inspection in Auto Active Test Mode

When auto active test mode is actuated, the following 6 steps are repeated 3 times.

*: Outputs duty ratio of 50% for 5 seconds 

→ duty ratio of 100% for 5 seconds on the cooling fan control module.

Operation 
sequence

Inspection Location

Operation

1

Oil pressure warning lamp

Blinks continuously during operation of auto active test 

2

Front wiper

LO for 5 seconds 

→ HI for 5 seconds

3

• Parking  lamps
• Side marker lamps
• License plate lamps
• Tail lamps
• Front fog lamps (if equipped)

10 seconds

4

Headlamps

LO 

⇔ HI 5 times

5

A/C compressor (magnet clutch)

ON 

⇔ OFF 5 times

6

*

Cooling fans

MID for 5 seconds 

→ HI for 5 seconds

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< SYSTEM DESCRIPTION >

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

AWMIA1321GB

Symptom

Inspection contents

Possible cause

Any of the following components do not operate
• Parking lamps
• Side marker lamps
• License plate lamps
• Tail  lamps
• Front fog lamps (if equipped)
• Headlamp (HI, LO)
• Front wiper

Perform auto active test.
Does the applicable system 
operate?

YES

BCM signal input circuit

NO

• Lamp or motor
• Lamp or motor ground cir-

cuit

• Harness or connector be-

tween IPDM E/R and appli-
cable system

• IPDM  E/R

A/C compressor does not operate

Perform auto active test.
Does the magnet clutch oper-
ate?

YES

• Combination meter signal 

input circuit

• CAN communication signal 

between combination meter 
and ECM

• CAN communication signal 

between ECM and IPDM E/
R

NO

• Magnet clutch
• Harness or connector be-

tween IPDM E/R and mag-
net clutch

• IPDM  E/R

DIAGNOSIS SYSTEM (IPDM E/R)

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< SYSTEM DESCRIPTION >

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CONSULT Function (IPDM E/R)

INFOID:0000000010053913

APPLICATION ITEM

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

ECU IDENTIFICATION

The IPDM E/R part number is displayed.

SELF DIAGNOSTIC RESULT

Refer to 

PCS-27, "DTC Index"

.

DATA MONITOR

Oil pressure warning lamp does not operate

Perform auto active test.
Does the oil pressure warning 
lamp blink?

YES

• Harness or connector be-

tween IPDM E/R and oil 
pressure switch

• Oil pressure switch
• IPDM E/R

NO

• CAN communication signal 

between IPDM E/R and 
BCM

• CAN communication signal 

between BCM and combi-
nation meter

• Combination meter

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
• Harness or connector be-

tween cooling fan and cool-
ing fan relays

• Cooling fan relays
• Harness or connector be-

tween IPDM E/R and cool-
ing fan relays

• IPDM E/R

Symptom

Inspection contents

Possible cause

Direct Diagnostic Mode

Description

ECU Identification

The IPDM E/R part number is displayed.

Self Diagnostic Result

The IPDM E/R self diagnostic results are displayed.

Data Monitor

The IPDM E/R input/output data is displayed in real time.

Active Test

The IPDM E/R activates outputs to test components.

CAN Diag Support Mntr

The result of transmit/receive diagnosis of CAN communication is diplayed.

Monitor Item [Unit]

Main

Signals

Description

MOTOR FAN REQ [1/2/3/4]

×

Indicates cooling fan speed signal received from ECM on CAN communication 
line

AC COMP REQ [On/Off]

×

Indicates A/C compressor request signal received from ECM on CAN commu-
nication line

TAIL&CLR REQ [On/Off]

×

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

HL LO REQ [On/Off]

×

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