Infiniti G37 Coupe. Manual - part 951

MWI-150

< SYMPTOM DIAGNOSIS >

THE METER CONTROL SWITCH IS INOPERATIVE

THE METER CONTROL SWITCH IS INOPERATIVE

Description

INFOID:0000000001606713

If any of the following malfunctions is found for the meter control switch operation.
• All switches are inoperative
• The specified switch cannot be operated

Diagnosis Procedure

INFOID:0000000001606714

1.

CHECK METER CONTROL SWITCH SIGNAL CIRCUIT

Check the meter control switch signal circuit. Refer to 

MWI-57, "Diagnosis Procedure"

. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK METER CONTROL SWITCH

Check the meter control switch. Refer to 

MWI-58, "Component Inspection"

. 

Is the inspection result normal?

YES

>> Replace combination meter.

NG

>> Replace meter control switch.

MWI

THE OIL PRESSURE WARNING LAMP DOES NOT TURN ON

MWI-151

< SYMPTOM DIAGNOSIS >

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THE OIL PRESSURE WARNING LAMP DOES NOT TURN ON

Description

INFOID:0000000001606715

The oil pressure warning lamp stays off when the ignition switch is turned ON

Diagnosis Procedure

INFOID:0000000001606716

1.

CHECK OIL PRESSURE WARNING LAMP

Perform auto active test of IPDM E/R. Refer to 

PCS-11, "Diagnosis Description"

.

Is oil pressure warning lamp illuminated?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT

Check the oil pressure switch signal circuit. Refer to 

MWI-59, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK OIL PRESSURE SWITCH

Check the oil pressure switch. Refer to 

MWI-59, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. 

NO

>> Replace oil pressure switch.

4.

CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL

1.

Connect the CONSULT-III.

2.

Select the “Data Monitor” of the “METER/M&A” and check the “OIL W/L” monitor value. Refer to 

MWI-59,

"Component Function Check"

.

Is the inspection result normal?

YES

>> Replace combination meter.

NO

>> Replace BCM. Refer to 

BCS-79, "Removal and Installation"

.

MWI-152

< SYMPTOM DIAGNOSIS >

THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF

THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF

Description

INFOID:0000000001606717

The oil pressure warning lamp remains illuminated while the engine is running (normal oil pressure)

Diagnosis Procedure

INFOID:0000000001606718

1.

CHECK OIL PRESSURE WARNING LAMP

Perform auto active test of IPDM E/R. Refer to 

PCS-11, "Diagnosis Description"

.

Is oil pressure warning lamp illuminated?

YES

>> GO TO 2.

NO

>> GO TO 5.

2.

CHECK IPDM E/R OUTPUT VOLTAGE

1.

Disconnect the oil pressure switch connector.

2.

Turn ignition switch ON.

3.

Check voltage between the oil pressure switch harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

CHECK OIL PRESSURE SWITCH

Check the oil pressure switch. Refer to 

MWI-59, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-34, "Removal and Installation"

.

NO

>> Replace oil pressure switch.

4.

CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT

Check the oil pressure switch signal circuit. Refer to 

MWI-59, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL

1.

Connect the CONSULT-III.

2.

Select the “Data Monitor” of the “METER/M&A” and check the “OIL W/L” monitor value. Refer to 

MWI-59,

"Component Function Check"

.

Is the inspection result normal?

YES

>> Replace combination meter.

NO

>> Replace BCM. Refer to 

BCS-79, "Removal and Installation"

.

Terminals

Voltage

(Approx.)

(+)

(–)

Oil pressure switch

Connector

Terminal

F37

1

Ground

12 V

MWI

THE PARKING BRAKE RELEASE WARNING CONTINUES DISPLAYING, OR 

DOES NOT DISPLAY

MWI-153

< SYMPTOM DIAGNOSIS >

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THE PARKING BRAKE RELEASE WARNING CONTINUES DISPLAYING,
OR DOES NOT DISPLAY

Description

INFOID:0000000001606719

• The parking brake warning is displayed during vehicle travel even though the parking brake is released
• The parking brake warning is not displayed even though driving the vehicle with the parking brake applied

Diagnosis Procedure

INFOID:0000000001606720

1.

CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL

1.

Connect the CONSULT-III.

2.

Select the “Data Monitor” of the “METER/M&A” and check the “PKB SW” monitor value. Refer to 

MWI-59,

"Component Function Check"

.

Is the inspection result normal?

YES

>> Replace combination meter.

NO

>> GO TO 2.

2.

CHECK PARKING BRAKE SWITCH SIGNAL CIRCUIT

Check the parking brake switch signal circuit. Refer to 

MWI-61, "Diagnosis Procedure (A/T models)"

 or 

MWI-

62, "Diagnosis Procedure (M/T models)"

. 

Is the inspection result normal?

YES

>> GO TO 3.

NG

>> Repair harness or connector.

3.

CHECK PARKING BRAKE SWITCH

Check the parking brake switch. Refer to 

BRC-72, "Component Inspection"

. 

Is the inspection result normal?

YES

>> Replace combination meter.

NO

>> Replace parking brake switch.