Infiniti M35/M45 Y50. Manual — part 363

UNIFIED METER AND A/C AMP

DI-35

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DTC [U1000] CAN Communication Circuit

NKS003UK

Symptom: Displays “CAN COMM CIRC [U1000]” as a self-diagnosis results of unified meter and A/C amp.

1.

CHECK CAN COMMUNICATION

1.

Select “SELF-DIAG RESULTS” mode for “METER A/C AMP” with CONSULT-II.

2.

Print out CONSULT-II screen.

>> Go to “LAN system”. Refer to

LAN-44, "CAN Diagnostic Support Monitor"

.

DTC [B2202] Meter Communication Circuit

NKS003UL

Symptom: Displays “METER COMM CIRC [B2202]” as a self-diagnosis results of unified meter and A/C amp.

1.

CHECK CONNECTOR

Check combination meter, unified meter and A/C amp. and terminals (combination meter side, unified meter
and A/C amp. side, and harness side) for looseness or bent.

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

2.

CHECK CONTINUITY COMMUNICATION CIRCUIT (TX: UNIFIED METER AND A/C AMP.)

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
(A) and unified meter and A/C amp. harness connector (B).

4.

Check continuity between combination meter harness connector
(A) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness or connector.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M52

15

M64

7

Yes

A

Ground

Continuity

Connector

Terminal

M52

15

No

PKIB7647E

DI-36

UNIFIED METER AND A/C AMP

3.

CHECK CONTINUITY COMMUNICATION CIRCUIT (RX: UNIFIED METER AND A/C AMP.)

1.

Check continuity between combination meter harness connector
(A) and unified meter and A/C amp. harness connector (B).

2.

Check continuity between combination meter harness connector
(A) and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

4.

CHECK COMBINATION METER OUTPUT VOLTAGE (TX: UNIFIED METER AND A/C AMP.)

1.

Connect combination meter connector.

2.

Turn ignition switch ON.

3.

Check voltage between combination meter harness connector
and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Replace combination meter.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M52

16

M64

27

Yes

A

Ground

Continuity

Connector

Terminal

M52

16 No

PKIB7648E

Terminals

Voltage (Approx.)

(+)

(–)

Combination meter

connector

Terminal

M52

15

Ground

5 V

PKIB7649E

UNIFIED METER AND A/C AMP

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5.

CHECK COMMUNICATION SIGNAL (TX: 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 and ground.

OK or NG

OK

>> GO TO 6.

NG

>> Replace unified meter and A/C amp.

6.

CHECK UNIFIED METER AND A/C AMP OUTPUT VOLTAGE (RX: UNIFIED METER AND A/C AMP.)

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector.

3.

Turn ignition switch ON.

4.

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

OK or NG

OK

>> GO TO 7.

NG

>> Replace unified meter and A/C amp.

Terminals

Voltage (Approx.)

(+)

(–)

Combination meter

connector

Terminal

M52

15

Ground

PKIB7650E

SKIA3362E

Terminals

Voltage (Approx.)

(+)

(–)

Unified meter and A/C

amp. connector

Terminal

M64

27 Ground

5

V

PKIB7651E

DI-38

UNIFIED METER AND A/C AMP

7.

CHECK COMMUNICATION SIGNAL (RX: UNIFIED METER AND A/C AMP.)

1.

Turn ignition switch OFF.

2.

Connect combination meter connector.

3.

Turn ignition switch ON.

4.

Check voltage signal between unified meter and A/C amp. har-
ness connector and ground.

OK or NG

OK

>> Replace unified meter and A/C amp.

NG

>> Replace combination meter.

DTC [B2205] Vehicle Speed Circuit

NKS003UM

Symptom: Displays “VEHICLE SPEED CIRC [B2205]” as a self-diagnosis results of unified meter and A/C
amp.
Preform self-diagnosis of ABS actuator and electric unit (control unit), and repair or replace malfunctioning
parts. Refer to

BRC-23, "CONSULT-II Functions (ABS)"

.

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

NKS003UN

REMOVAL

1.

Remove the audio unit. Refer to

AV-126, "Audio Unit"

(Without

mobile entertainment system) or

AV-277, "Audio Unit"

. (With

mobile entertainment system).

2.

Remove the screws (A) 2.

3.

Remove the screws (B) 4 and remove the bracket (1).

4.

Remove unified meter and A/C amp. (2).

INSTALLATION

Installation is the reverse order of removal.

CAUTION:

Unified meter and A/C amp. screws (A) are different from other screws. Never confuse them when
installing.

Terminals

Voltage (Approx.)

(+)

(–)

Unified meter

and A/C amp.

connector

Terminal

M64

27

Ground

PKIB7652E

SKIA3361E

SKIB4053E