Nissan Leaf. Manual - part 1297

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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

CONSULT Function (IPDM E/R)

INFOID:0000000010499447

APPLICATION ITEM

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

SELF DIAGNOSTIC RESULT

Refer to 

PCS-18, "DTC Index"

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DATA MONITOR

JMMIA0657GB

Symptom

Inspection contents

Possible cause

Rear window defogger does not operate

Perform auto active test.
Does the rear window defogger 
operate?

YES

BCM signal input circuit

NO

• Rear window defogger
• Rear window defogger ground circuit
• Harness or connector between IPDM E/R 

and rear window defogger

• IPDM E/R

Any of the following components do not 
operate

• Parking  lamp
• License plate lamp
• Tail  lamp
• Front fog lamp
• Headlamp (HI, LO)
• Side marker lamp
• Front wiper motor

Perform auto active test.
Does the applicable system op-
erate?

YES

BCM signal input circuit

NO

• Lamp or motor
• Lamp or motor ground circuit
• Harness or connector between IPDM E/R 

and applicable system

• IPDM E/R

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 displayed.

DIAGNOSIS SYSTEM (IPDM E/R)

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< SYSTEM DESCRIPTION >

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ACTIVE TEST

CAN DIAG SUPPORT MNTR

Refer to 

LAN-14, "CAN Diagnostic Support Monitor"

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Monitor Item [Unit]

Main

Signals

Description

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

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 power 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 power switch

DETENT SW [On/Off]

Indicates condition of shift position (park position switch)

DTRL REQ [Off]

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

HOOD SW [On/Off]

Indicates condition of hood 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

Test item

Description

HORN

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

REAR DEFOGGER

This test is able to check rear window defogger operation [On/Off].

FRONT WIPER

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

EXTERNAL LAMPS

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

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< ECU DIAGNOSIS INFORMATION >

BCM, IPDM E/R

ECU DIAGNOSIS INFORMATION

BCM, IPDM E/R

List of ECU Reference

INFOID:0000000010122207

ECU

Reference

BCM

BCS-28, "Reference Value"

BCS-46, "Fail-safe"

BCS-47, "DTC Inspection Priority Chart"

BCS-48, "DTC Index"

IPDM E/R

PCS-14, "Reference Value"

PCS-17, "Fail-Safe"

PCS-18, "DTC Index"

WIPER AND WASHER SYSTEM

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< WIRING DIAGRAM >

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WIRING DIAGRAM

WIPER AND WASHER SYSTEM

Wiring Diagram

INFOID:0000000010122208

AALWA0807GB