Infiniti FX35 / FX45. Manual — part 847

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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< SERVICE INFORMATION >

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NOTE:
Turns ON-OFF the solenoid to switch Hi/Lo. In this case, the bulb does not illuminate.

Concept of Auto Active Test

• IPDM E/R actuates auto active test mode when it receives door switch signal from BCM via CAN communi-

cation line. Therefore, when auto active test mode is activated successfully, CAN communication between
IPDM E/R and BCM is normal.

• If any of systems controlled by IPDM E/R cannot be operated, possible cause can be easily diagnosed using

auto active test.

Diagnosis chart in auto active test mode

Symptom

Inspection contents

Possible cause

Any of front wipers, tail
and parking lamps, front
fog lamps, and head
lamps (Hi, Lo) do not op-
erate.

Perform auto active
test. Does system in
question operate?

YES

• BCM signal input system malfunction

NO

• Lamp/wiper motor malfunction
• Lamp/wiper motor ground circuit malfunction
• Harness/connector malfunction between IPDM E/R and system in question
• IPDM E/R (integrated relay) malfunction

Rear window defogger
does not operate.

Perform auto active
test. Does rear win-
dow defogger oper-
ate?

YES

• BCM signal input circuit malfunction

NO

• Rear window defogger relay malfunction
• Harness/connector malfunction between IPDM E/R and rear window de-

fogger relay.

• Open circuit of rear window defogger
• IPDM E/R malfunction

A/C compressor does
not operate.

Perform auto active
test. Does magnetic
clutch operate?

YES

• BCM signal input circuit malfunction
• CAN communication signal between BCM and ECM.
• CAN communication signal between ECM and IPDM E/R

NO

• Magnetic clutch malfunction
• Harness/connector malfunction between IPDM E/R and magnetic clutch
• IPDM E/R (integrated relay) malfunction

Cooling fan does not op-
erate.

Perform auto active
test. Does cooling
fan operate?

YES

• ECM signal input circuit
• CAN communication signal between ECM and IPDM E/R

NO

• Cooling fan motor malfunction
• Harness/connector malfunction between IPDM E/R and cooling fan motor
• IPDM E/R (integrated relay) malfunction

Oil pressure warning
lamp does not operate.

Perform auto active
test. Does oil pres-
sure warning lamp
blink?

YES

• Harness/connector malfunction between IPDM E/R and oil pressure switch
• Oil pressure switch malfunction
• IPDM E/R malfunction

NO

• CAN communication signal between BCM and unified meter and A/C amp.
• Combination meter

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< SERVICE INFORMATION >

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

Schematic

INFOID:0000000001328876

TKWM4469E

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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IPDM E/R Terminal Arrangement

INFOID:0000000001328877

IPDM E/R Power/Ground Circuit Inspection

INFOID:0000000001370717

1.

CHECK FUSE AND FUSIBLE LINK

Make sure the following fusible links or IPDM E/R fuses are not blown.

CKIM0237E

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< SERVICE INFORMATION >

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

OK or NG

OK

>> GO TO 2.

NG

>> If fuse or fusible link blown, be sure to eliminate cause of malfunction before installing new one.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector.

3.

Check voltage between IPDM E/R harness connector and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

1.

Disconnect IPDM E/R harness connectors.

2.

Check continuity between IPDM E/R harness connectors and
ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness or connector.

U1000 CAN COMM CIRCUIT

INFOID:0000000001366489

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result” of IPDM E/R.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to

LAN-43, "CAN System Specification Chart"

.

NO

>> Refer to

GI-25, "How to Perform Efficient Diagnosis for an Electrical Incident"

.

Removal and Installation of IPDM E/R

INFOID:0000000001328880

REMOVAL

1.

Remove battery. Refer to

SC-6, "Removal and Installation"

.

Terminal No.

Power source

Fuse and fusible link No.

1

Battery power

E

2

C

—

71

78

Terminals

Voltage (Ap-

prox.)

(+)

(-)

IPDM E/R connector

Terminal

Ground

E3

1

Battery voltage

2

PKIB6562E

IPDM E/R connector

Terminal

Ground

Continuity

E8

38

E9

50

Yes

60

SKIA6184E