Infiniti G37 Coupe. Manual — part 1435

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< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (IPDM E/R)

*: Outputs duty ratio of 50% for 5 seconds

→

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

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

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
• License plate lamps
• Side maker lamps
• Tail lamps
• Front fog lamps

10 seconds

4

Headlamps

LO

⇔

HI 5 times

5

A/C compressor (magnet clutch)

ON

⇔

OFF 5 times

6

*

Cooling fan

MID for 5 seconds

→

HI for 5 seconds

JPMIA0009GB

Symptom

Inspection contents

Possible cause

Any of the following components do not operate

• Parking lamps
• License plate lamps
• Side maker lamps
• Tail lamps
• Front fog lamps
• 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

DIAGNOSIS SYSTEM (IPDM E/R)

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CONSULT-III Function (IPDM E/R)

INFOID:0000000001768897

APPLICATION ITEM

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

SELF DIAGNOSTIC RESULT

Refer to

PCS-32, "DTC Index"

.

DATA MONITOR

A/C compressor does not operate

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

YES

• Unified meter and A/C amp.

signal input circuit

• CAN communication signal

between unified meter and
A/C amp. 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

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 unified
meter and A/C amp.

• 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 control module

• Cooling fan control module
• Harness or connector be-

tween IPDM E/R and cool-
ing fan control module

• Cooling fan relay
• Harness or connector be-

tween IPDM E/R and cool-
ing 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.

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< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (IPDM E/R)

Monitor item

Monitor Item

[Unit]

MAIN SIG-

NALS

Description

RAD FAN 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.

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 A/T shift position
(A/T 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/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 A/T device (detention switch) judged by IPDM E/R.

S/L RLY -REQ
[Off/On]

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

S/L STATE
[LOCK/UNLK/UNKWN]

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

DTRL REQ
[Off]

NOTE:
The item is indicated, but not monitored.

OIL P SW
[Open/Close]

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

HOOD SW
[Off/On]

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

HL WASHER REQ
[Off]

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.

DIAGNOSIS SYSTEM (IPDM E/R)

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ACTIVE TEST

Test item

HORN CHIRP
[Off/On]

Displays the status of the horn reminder signal received from BCM via CAN com-
munication.

CRNRNG LMP REQ
[Off]

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 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.

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.

HEAD LAMP WASHER

On

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

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.