Infiniti FX35, FX50 (S51). Manual - part 1371

MWI

MWI-3

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UNIFIED METER AND A/C AMP.  ......................

96

Reference Value  .....................................................

96

Wiring Diagram - METER -  ...................................

103

Fail-Safe ................................................................

118

DTC Index  .............................................................

119

IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM)  ...............

121

Reference Value  ...................................................

121

Wiring Diagram - IPDM E/R -  ................................

128

Fail-safe ................................................................

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DTC Index ............................................................

133

SYMPTOM DIAGNOSIS  ............................

134

THE FUEL GAUGE POINTER DOES NOT 
MOVE ...............................................................

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Description ............................................................

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Diagnosis Procedure .............................................

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THE METER CONTROL SWITCH IS INOPER-
ATIVE ...............................................................

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Description ............................................................

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Diagnosis Procedure .............................................

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THE TRIP A/B RESET SWITCH IS INOPERA-
TIVE ..................................................................

136

Description ............................................................

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Diagnosis Procedure .............................................

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THE OIL PRESSURE WARNING LAMP 
DOES NOT TURN ON ......................................

137

Description ............................................................

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Diagnosis Procedure .............................................

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THE OIL PRESSURE WARNING LAMP 
DOES NOT TURN OFF  ....................................

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Description ............................................................

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Diagnosis Procedure .............................................

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

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Description ............................................................

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Diagnosis Procedure .............................................

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THE LOW WASHER FLUID WARNING CON-
TINUES DISPLAYING, or DOES NOT DIS-
PLAY ................................................................

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Description ............................................................

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Diagnosis Procedure .............................................

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THE DOOR OPEN WARNING CONTINUES 
DISPLAYING, OR DOES NOT DISPLAY  ........

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Description .............................................................

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Diagnosis Procedure  .............................................

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THE AMBIENT TEMPERATURE DISPLAY IS 
INCORRECT ...................................................

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Description .............................................................

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Diagnosis Procedure  .............................................

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NORMAL OPERATING CONDITION  .............

143

COMPASS ...............................................................

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COMPASS : Description ........................................

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INFORMATION DISPLAY ........................................

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INFORMATION DISPLAY : Description  ................

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PRECAUTION ............................................

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PRECAUTIONS ...............................................

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Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................

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PREPARATION .........................................

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PREPARATION ...............................................

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Commercial Service Tools .....................................

145

REMOVAL AND INSTALLATION  .............

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COMBINATION METER  .................................

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Exploded View .......................................................

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Removal and Installation  .......................................

146

Disassembly and Assembly ...................................

146

UNIFIED METER AND A/C AMP.  ...................

147

Exploded View .......................................................

147

Removal and Installation  .......................................

147

METER CONTROL SWITCH  ..........................

148

Exploded View .......................................................

148

Removal and Installation  .......................................

148

TRIP A/B RESET SWITCH  .............................

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Exploded View .......................................................

149

Removal and Installation  .......................................

149

COMPASS .......................................................

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Exploded View .......................................................

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Removal and Installation  .......................................

150

CLOCK ............................................................

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Exploded View .......................................................

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Removal and Installation  .......................................

151

MWI-4

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work flow

INFOID:0000000005524548

OVERALL SEQUENCE

• Reference 1···

MWI-43, "Diagnosis Description"

.

• Reference 2···

MWI-119, "DTC Index"

.

• Reference 3···

MWI-58, "COMBINATION METER : Diagnosis Procedure"

.

DETAILED FLOW

1.

OBTAIN INFORMATION ABOUT SYMPTOM

Interview the customer to obtain as much information as possible about the conditions and environment under
which the malfunction occurred.

>> GO TO 2.

2.

CHECK SYMPTOM

JSNIA0542GB

MWI

DIAGNOSIS AND REPAIR WORKFLOW

MWI-5

< BASIC INSPECTION >

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• Check the symptom based on the information obtained from the customer.
• Check that any other malfunctions are present.

>> GO TO 3.

3.

CHECK ON BOARD DIAGNOSIS OPERATION

Check that the on board diagnosis function operates. Refer to 

MWI-43, "Diagnosis Description"

. 

Does the on board diagnosis function operate normally?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

CHECK CONSULT-III SELF-DIAGNOSIS RESULTS

Connect CONSULT-III and perform self-diagnosis. Refer to 

MWI-45, "CONSULT-III Function (METER/M&A)"

.

Are self-diagnosis results normal?

YES

>> GO TO 5.

NO

>> GO TO 8.

5.

NARROW DOWN THE MALFUNCTIONING PARTS BY SYMPTOM DIAGNOSIS

Perform symptom diagnosis and narrow down the malfunctioning parts.

>> GO TO 8.

6.

CHECK COMBINATION METER POWER SUPPLY AND GROUND CIRCUITS

Inspect combination meter power supply and ground circuits. Refer to 

MWI-58, "COMBINATION METER :

Diagnosis Procedure"

. 

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 8.

7.

REPLACE COMBINATION METER

Replace combination meter.

>> GO TO 9.

8.

REPAIR OR REPLACE MALFUNCTIONING PARTS

Repair or replace the malfunctioning parts.
NOTE:
If DTC is displayed, erase DTC after repair or replace malfunctioning parts.

>> GO TO 9.

9.

FINAL CHECK

Check that the combination meter operates normally.

Do they operate normally?

YES

>> INSPECTION END

NO

>> GO TO 1.

MWI-6

< SYSTEM DESCRIPTION >

METER SYSTEM

SYSTEM DESCRIPTION

METER SYSTEM

METER SYSTEM

METER SYSTEM : System Diagram

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METER SYSTEM : System Description

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COMBINATION METER

• The combination meter retrieves the information required for controlling the operations of the meters, indica-

tor lamps/warning lamps and information display from the communication signals from the unified meter and
A/C amp. and the signals from various switches and sensors.

• The combination meter incorporates a trip computer that displays warnings and messages on the informa-

tion display according to the information received from various units.

• The combination meter incorporates a buzzer function that sounds an audible alarm with the integrated

buzzer device. Refer to 

WCS-5, "WARNING CHIME SYSTEM : System Description"

 for further details.

• The combination meter integrates the meter circuit check function and the segment check function that

checks the information display operation.

UNIFIED METER AND A/C AMP.

• Receives information required by the combination meter from various units via CAN communication line and

transmits it to the combination meter with communication line.

• The unified meter and A/C amp. incorporates a power saving control function that reduces the power con-

sumption according to the vehicle status. Refer to 

BCS-14, "System Description"

 for details.

• The unified meter and A/C amp. incorporates a diagnosis function that allows the technician to perform diag-

noses with CONSULT-III.

JSNIA2514GB