Nissan Quest E52. Instruction — part 1272

DIAGNOSIS SYSTEM (IPDM E/R)

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< SYSTEM DESCRIPTION >

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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

JMMIA0836GB

Symptom

Inspection contents

Possible cause

Any of the following components do not
operate

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

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 between IPDM E/

R and magnet clutch

• IPDM E/R

Oil pressure warning lamp does not operate

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

YES

• Harness or connector between 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 Combination meter

• Combination meter

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< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (IPDM E/R)

CONSULT Function (IPDM E/R)

INFOID:0000000009980945

APPLICATION ITEM

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

SELF DIAGNOSTIC RESULT

Refer to

PCS-24, "DTC Index"

.

DATA MONITOR

NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.

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 between cooling

fan and cooling fan relay

• Harness or connector between IPDM E/

R and cooling fan relay

• Cooling fan relay
• IPDM E/R

Symptom

Inspection contents

Possible cause

Diagnosis mode

Description

Ecu Identification

Allows confirmation of IPDM E/R part number.

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 value of the cooling fan speed signal received from ECM via CAN com-
munication.

AC COMP REQ
[Off/On]

×

Displays the status of the A/C compressor request signal received from ECM via
CAN communication.

TAIL&CLR REQ
[Off/On]

×

Displays the status of the position light request signal received from BCM via CAN
communication.

HL LO REQ
[Off/On]

×

Displays the status of the low beam request signal received from BCM via CAN com-
munication.

HL HI REQ
[Off/On]

×

Displays the status of the high beam request signal received from BCM via CAN
communication.

FR FOG REQ
[Off/On]

×

Displays the status of the front fog light request signal received from BCM via CAN
communication.

FR WIP REQ
[Stop/1LOW/Low/Hi]

×

Displays the status of the front wiper request signal received from BCM via CAN
communication.

WIP AUTO STOP
[STOP P/ACT P]

×

Displays the status of the front wiper stop position signal judged by IPDM E/R.

WIP PROT
[Off/BLOCK]

×

Displays the status of the front wiper fail-safe operation judged by IPDM E/R.

IGN RLY1 -REQ
[Off/On]

Displays the status of the ignition switch ON signal received from BCM via CAN com-
munication.

IGN RLY
[Off/On]

×

Displays the status of the ignition relay judged by IPDM E/R.

DIAGNOSIS SYSTEM (IPDM E/R)

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< SYSTEM DESCRIPTION >

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ACTIVE TEST

Test item

PUSH SW
[Off/On]

Displays the status of the push-button ignition switch judged by IPDM E/R.

INTER/NP SW
[Off/On]

Displays the status of the shift position judged by IPDM E/R.

ST RLY CONT
[Off/On]

Displays the status of the starter relay status signal received from BCM via CAN
communication.

IHBT RLY -REQ
[Off/On]

Displays the status of the starter control relay signal received from BCM via CAN
communication.

ST/INHI RLY
[Off/ ST /INHI/UNKWN]

Displays the status of the starter relay and starter control relay judged by IPDM E/R.

DETENT SW
[Off/On]

Displays the status of the CVT shift selector (detention switch) judged by IPDM E/R.

S/L RLY -REQ
[Off/On]

NOTE:
The item is indicated, but not monitored.

S/L STATE
[LOCK/UNLK/UNKWN]

NOTE:
The item is indicated, but not monitored.

DTRL REQ
[Off/On]

Displays the status of the daytime running light request signal received from BCM via
CAN communication.
NOTE:
This item is monitored only on the vehicle with daytime running light system.

OIL P SW
[Open/Close]

Displays the status of the oil pressure switch judged by IPDM E/R.

HOOD SW
[Off/On]

NOTE:
The item is indicated, but not monitored.

HL WASHER REQ
[Off/On]

NOTE:
The item is indicated, but not monitored.

THFT HRN REQ
[Off/On]

Displays the status of the theft warning horn request signal received from BCM via
CAN communication.

HORN CHIRP
[Off/On]

Displays the status of the horn reminder signal received from BCM via CAN commu-
nication.

CRNRNG LMP REQ
[Off/On]

NOTE:
The item is indicated, but not monitored.

Monitor Item

[Unit]

MAIN SIG-

NALS

Description

Test item

Operation

Description

CORNERING LAMP

Off

NOTE:
The item is indicated, but cannot be tested.

LH

RH

HORN

On

Operates horn relay for 20 ms.

FRONT WIPER

Off

OFF

Lo

Operates the front wiper relay.

Hi

Operates the front wiper relay and front wiper high relay.

MOTOR FAN

1

OFF

2

Operates the cooling fan relay-1.

3

Operates the cooling fan relay-2.

4

Operates the cooling fan relay-2 and cooling fan relay-3.

HEAD LAMP WASHER

On

NOTE:
The item is indicated, but cannot be tested.

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< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (IPDM E/R)

EXTERNAL LAMPS

Off

OFF

TAIL

Operates the tail lamp relay and the daytime running light relay.

Lo

Operates the headlamp low relay.

Hi

Operates the headlamp low relay and ON/OFF the headlamp high relay at 1 sec-
ond intervals.

Fog

Operates the front fog lamp relay.

Test item

Operation

Description