Infiniti FX35 / FX45. Manual - part 289

UNIFIED METER AND A/C AMP

DI-31

< SERVICE INFORMATION >

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NO

>> GO TO 6.

3.

CHECK CONTINUITY COMMUNICATION CIRCUIT (TX: COMBINATION METER)

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector and unified meter and A/C amp. connector.

3.

Check continuity between combination meter harness connector
M20 terminal 13 and unified meter and A/C amp. harness con-
nector M55 terminal 19.

4.

Check continuity between combination meter harness connector
M20 terminal 13 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

4.

CHECK VOLTAGE OF UNIFIED METER AND A/C AMP.

1.

Connect unified meter and A/C amp. connector.

2.

Turn ignition switch ON.

3.

Check voltage between combination meter harness connector
M20 terminal 13 and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Replace unified meter and A/C amp. Refer to 

DI-32,

"Removal and Installation of Unified Meter and A/C
Amp"

5.

CHECK VOLTAGE SIGNAL OF COMBINATION METER

1.

Turn ignition switch OFF.

2.

Connect combination meter connector.

3.

Turn ignition switch ON.

4.

Check voltage signal between combination meter harness con-
nector M20 terminal 13 and ground.

OK or NG

OK

>> Replace unified meter and A/C amp. Refer to 

DI-32, "Removal and Installation of Unified Meter

and A/C Amp"

.

NG

>> Replace combination meter.

6.

CHECK CONTINUITY COMMUNICATION CIRCUIT (RX: COMBINATION METER)

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector and unified meter and A/C amp. connector.

13 – 19

: Continuity should exist.

13 – Ground

: Continuity should not exist.

SKIA4837E

13 – Ground

: Approx. 5 V

SKIA4886E

13 – Ground:

SKIA9258E

SKIA3361E

DI-32

< SERVICE INFORMATION >

UNIFIED METER AND A/C AMP

3.

Check continuity between combination meter harness connector
M20 terminal 14 and unified meter and A/C amp. harness con-
nector M55 terminal 9.

4.

Check continuity between combination meter harness connector
M20 terminal 14 and ground.

OK or NG

OK

>> GO TO 7.

NG

>> Repair harness or connector.

7.

CHECK VOLTAGE OF COMBINATION METER

1.

Connect combination meter connector.

2.

Turn ignition switch ON.

3.

Check voltage between unified meter and A/C amp. harness
connector M55 terminal 9 and ground.

OK or NG

OK

>> GO TO 8.

NG

>> Replace combination meter.

8.

CHECK VOLTAGE SIGNAL OF UNIFIED METER AND A/C AMP.

1.

Turn ignition switch OFF.

2.

Connect unified meter and A/C amp. connector.

3.

Turn ignition switch ON.

4.

Check voltage signal between combination meter harness con-
nector M20 terminal 14 and ground.

OK or NG

OK

>> Replace combination meter.

NG

>> Replace unified meter and A/C amp. Refer to 

DI-32, "Removal and Installation of Unified Meter

and A/C Amp"

.

DTC [B2205] Vehicle Speed Circuit

INFOID:0000000001328462

Symptom: Display “VEHICLE SPEED CIRC [B2205]” at the result of self-diagnosis for unified meter and A/C
amp.
Perform self-diagnosis of ABS actuator and electric unit (control unit), and repair or replace malfunctioning
parts. Refer to 

BRC-26, "CONSULT-III Functions (ABS)"

.

Removal and Installation of Unified Meter and A/C Amp

INFOID:0000000001328463

REMOVAL

14 – 9

: Continuity should exist.

14 – Ground

: Continuity should not exist.

SKIA4836E

9 – Ground

: Approx. 5 V

PKIB3587E

14 – Ground:

SKIA9260E

SKIA3362E

UNIFIED METER AND A/C AMP

DI-33

< SERVICE INFORMATION >

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1.

Remove the audio unit (1). Refer to 

AV-41, "Removal and Instal-

lation of Audio Unit"

.

2.

Remove the screws (A).

3.

Remove the screws (B) and remove the unified meter and A/C
amp. (2).

INSTALLATION

Installation is the reverse order of removal.
NOTE:
Use appropriate screws for each, as screws for audio unit and display unit are different from that for unified
meter and A/C amp.

SKIB8483E

DI-34

< SERVICE INFORMATION >

WARNING LAMPS

WARNING LAMPS

System Description

INFOID:0000000001328464

OIL PRESSURE WARNING LAMP

Oil pressure warning lamp turns ON when reducing engine oil pressure abnormally.
• IPDM E/R reads oil pressure switch signal from oil pressure switch, and transmits the signal to unified meter

and A/C amp. through BCM with CAN communication.

• Unified meter and A/C amp. transmits oil pressure switch signal to combination meter with communication

line.

• Combination meter turns oil pressure warning lamp ON with received oil pressure switch signal.

PKIB7655E