Nissan Altima L32. Instruction — part 988

PCS-16

< FUNCTION DIAGNOSIS >

[IPDM E/R]

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

ALCIA0032GB

Symptom

Inspection contents

Possible cause

Any of the following components do not operate

• Parking 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

PCS

DIAGNOSIS SYSTEM (IPDM E/R)

PCS-17

< FUNCTION DIAGNOSIS >

[IPDM E/R]

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CONSULT - III Function (IPDM E/R)

INFOID:0000000004202409

APPLICATION ITEM

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

SELF DIAGNOSTIC

Refer to

PCS-45, "DTC Index"

.

DATA MONITOR

Monitor item

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

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

RADFAN REQ
[%]

×

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

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
communication.

HL HI REQ
[Off/On]

×

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

PCS-18

< FUNCTION DIAGNOSIS >

[IPDM E/R]

DIAGNOSIS SYSTEM (IPDM E/R)

ACTIVE TEST

Test item

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 auto stop 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
communication.

IGN RLY
[Off/On]

×

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

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 clutch interlock switch (M/T models) or CVT shift posi-
tion (CVT models) 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]

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 device (detention switch) judged by IPDM E/R.

S/L RLY -REQ
[Off/On]

Displays the status of the electronic steering column lock relay request received
from BCM via CAN communication.

S/L STATE
[LOCK/UNLK/UNKWN]

Displays the status of the electronic steering column lock judged by IPDM E/R.

DTRL REQ
[Off]

NOTE:
This item is displayed, but cannot be monitored.

OIL P SW
[Open/Close]

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

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 com-
munication.

CRNRNG LMP REQ
[Off]

NOTE:
This item is displayed, but cannot be monitored.

Monitor Item

[Unit]

MAIN SIG-

NALS

Description

Test item

Operation

Description

CORNERING LAMP

Off

NOTE:
This item is displayed, but cannot be monitored.

LH

RH

HORN

On

Operates horn relay 1 and horn relay 2 for 20 ms.

FRONT WIPER

Off

OFF

Lo

Operates the front wiper relay.

Hi

Operates the front wiper relay and front wiper high relay.

PCS

DIAGNOSIS SYSTEM (IPDM E/R)

PCS-19

< FUNCTION DIAGNOSIS >

[IPDM E/R]

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MOTOR FAN

1

OFF

2

Outputs 50% pulse duty signal (PWM signal) to the cooling fan control module.

3

Outputs 80% pulse duty signal (PWM signal) to the cooling fan control module.

4

Outputs 100% pulse duty signal (PWM signal) to the cooling fan control module.

EXTERNAL LAMPS

Off

OFF

TAIL

Operates the tail lamp 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