Nissan Maxima. Manual - part 855

MWI

B2267 ENGINE SPEED

MWI-35

< DTC/CIRCUIT DIAGNOSIS >

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B2267 ENGINE SPEED

Description

INFOID:0000000010049574

The engine speed signal is transmitted from ECM to the combination meter via CAN communication.

DTC Logic

INFOID:0000000010049575

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000010049576

1.

PERFORM SELF-DIAGNOSIS OF ECM

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

>> Refer to 

EC-138, "CONSULT Function"

.

DTC

Display contents of 

CONSULT

Diagnostic item is detected when ...

Probable malfunction location

B2267

ENGINE SPEED

ECM continuously transmits abnormal engine 
speed signals for 2 seconds or more 

• Crankshaft position sensor (POS)
• ECM

MWI-36

< DTC/CIRCUIT DIAGNOSIS >

B2268 WATER TEMP

B2268 WATER TEMP

Description

INFOID:0000000010049577

The engine coolant temperature signal is transmitted from ECM to the combination meter via CAN communi-

cation.

DTC Logic

INFOID:0000000010049578

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000010049579

1.

PERFORM SELF-DIAGNOSIS OF ECM

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

>> Refer to 

EC-138, "CONSULT Function"

.

DTC

Display contents of 

CONSULT

Diagnostic item is detected when ...

Probable malfunction location

B2268

WATER TEMP

ECM continuously transmits abnormal engine 
coolant temperature signals for 60 seconds or 
more 

• Engine coolant temperature sensor
• ECM

MWI

POWER SUPPLY AND GROUND CIRCUIT

MWI-37

< DTC/CIRCUIT DIAGNOSIS >

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POWER SUPPLY AND GROUND CIRCUIT

COMBINATION METER
COMBINATION METER : Diagnosis Procedure

INFOID:0000000010049580

Regarding Wiring Diagram information, refer to 

MWI-87, "Wiring Diagram"

.

1.

CHECK FUSES

Check for blown combination meter fuses.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

1. Disconnect combination meter connector.

2. Check voltage between combination meter harness connector

M24 terminals 1, 2, and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Check harness for open between combination meter and fuse.

3.

GROUND CIRCUIT CHECK

1. Turn ignition switch OFF.

2. Check continuity between combination meter harness connector

terminals 3, 4, 23 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair or replace harness or connector.

BCM (BODY CONTROL MODULE)

Unit

Power source

Fuse No.

Combination meter

Battery 6

Ignition switch ON or START 

4

Terminals

Ignition switch position

(+)

(–)

OFF

ON

START

Connector

Terminal

M24

1

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

2

0V

Battery

 voltage

Battery 
voltage

AWNIA1766ZZ

Terminals

Continuity

(+)

(–)

Connector

Terminal

M24

3

Ground

Yes

4

23

AWNIA1767ZZ

MWI-38

< DTC/CIRCUIT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000010062250

Regarding Wiring Diagram information, refer to 

BCS-67, "Wiring Diagram"

.

1.

 CHECK FUSE AND FUSIBLE LINK

Check if the following BCM fuses or fusible link are blown.

Is the fuse or fusible link blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM.

3. Check voltage between BCM harness connector and ground.

Is the measurement normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure

INFOID:0000000010062251

Regarding Wiring Diagram information, refer to 

PCS-28, "Wiring Diagram"

.

Terminal No.

Signal name

Fuse and fusible link No.

1

Battery power supply

H

11

10

24

7

Terminals

Voltage

(Approx.)

(+)

(

−)

BCM

Ground

Connector

Terminal

M16

1

Battery voltage

M17

11

M18

24

BCM

Ground

Continuity

Connector

Terminal

M17

13

Yes