Infiniti G37 Coupe. Manual - part 925

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< COMPONENT DIAGNOSIS >

B2202 COMMUNICATION ERROR 2

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace unified meter and A/C amp.

4.

CHECK COMBINATION METER OUTPUT VOLTAGE 

1.

Turn ignition switch OFF.

2.

Disconnect unified meter and A/C amp. connector.

3.

Connect combination meter connector.

4.

Turn ignition switch ON.

5.

Check voltage between combination meter harness connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace combination meter.

Terminal

Voltage

(Approx.)

(+)

(–)

Unified meter and A/C amp.

Connector

Terminal

M66

27

Ground

5 V

Terminal

Voltage

(Approx.)

(+)

(–)

Combination meter

Connector

Terminal

M53

3

Ground

5 V

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B2205 VEHICLE SPEED

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< COMPONENT DIAGNOSIS >

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B2205 VEHICLE SPEED

Description

INFOID:0000000001606660

Vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) via CAN communication
to unified meter and A/C amp.

DTC Logic

INFOID:0000000001606661

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001606662

1.

PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Perform “Self Diagnostic Result” of ABS actuator and electric unit (control unit), and repair or replace malfunc-
tioning parts.

>> Refer to 

BRC-26, "CONSULT-III Function"

.

DTC

Display contents of 

CONSULT-III

Diagnostic item is detected when ...

Probable malfunction location

B2205

VEHICLE SPEED

If the abnormal vehicle speed signal is input 
from ABS actuator and electric unit (control 
unit) for 2 seconds or more

• Wheel sensor
• ABS actuator and electric unit (control unit)

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< COMPONENT DIAGNOSIS >

B2267 ENGINE SPEED

B2267 ENGINE SPEED

Description

INFOID:0000000001606663

The engine speed signal is transmitted from ECM to the unified meter and A/C amp. with CAN communica-
tion.

DTC Logic

INFOID:0000000001606664

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001606665

1.

PERFORM SELF-DIAGNOSIS OF ECM

Perform “Self Diagnostic Result” of ECM, and repair or replace malfunctioning parts.

>> Refer to 

EC-120, "CONSULT-III Function"

.

DTC

Display contents of 

CONSULT-III

Diagnostic item is detected when ...

Probable malfunction location

B2267

ENGINE SPEED

If ECM continuously transmits abnormal en-
gine speed signals for 2 seconds or more 

• Crankshaft position sensor (POS)
• ECM

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B2268 WATER TEMP

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< COMPONENT DIAGNOSIS >

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B2268 WATER TEMP

Description

INFOID:0000000001606666

The engine coolant temperature signal is transmitted from ECM to the unified meter and A/C amp. via CAN
communication.

DTC Logic

INFOID:0000000001606667

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001606668

1.

PERFORM SELF-DIAGNOSIS OF ECM

Perform “Self Diagnostic Result” of ECM, and repair or replace malfunctioning parts.

>> Refer to 

EC-120, "CONSULT-III Function"

.

DTC

Display contents of 

CONSULT-III

Diagnostic item is detected when ...

Probable malfunction location

B2268

WATER TEMP

If ECM continuously transmits abnormal en-
gine coolant temperature signals for 60 sec-
onds or more 

• Engine coolant temperature sensor
• ECM