Nissan Altima L32. Manual - part 978

MWI-164

< ECU DIAGNOSIS >

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

STARTER MOTOR PROTECTION FUNCTION

IPDM E/R turns OFF the starter control relay to protect the starter motor when the starter control relay remains

active for 90 seconds.

DTC Index

INFOID:0000000004495964

NOTE:

The details of TIME display are as follows.

• CRNT: The malfunctions that are detected now

• 1 - 39: The number is indicated when it is normal at present and a malfunction was detected in the past. It

increases like 0 

→ 1 → 2 · · · 38 → 39 after returning to the normal condition whenever IGN OFF → ON. It is

fixed to 39 until the self-diagnosis results are erased if it is over 39. It returns to 0 when a malfunction is

detected again in the process.

CONSULT-III display

Fail-safe

TIME

NOTE

Refer to

No DTC is detected.
further testing
may be required.

—

—

—

—

U1000: CAN COMM CIRCUIT

×

CRNT

1 – 39

PCS-20

B2098: IGN RELAY ON

×

CRNT

1 – 39

PCS-21

B2099: IGN RELAY OFF

—

CRNT

1 – 39

PCS-22

B2108: STRG LCK RELAY ON

—

CRNT

1 – 39

SEC-42

B2109: STRG LCK RELAY OFF

—

CRNT

1 – 39

SEC-43

B210A: STRG LCK STATE SW

—

CRNT

1 – 39

SEC-44

B210B: START CONT RLY ON

—

CRNT

1 – 39

SEC-48

B210C: START CONT RLY OFF

—

CRNT

1 – 39

SEC-49

B210D: STARTER RELAY ON

—

CRNT

1 – 39

SEC-50

B210E: STARTER RELAY OFF

—

CRNT

1 – 39

SEC-51

B210F: INTRLCK/PNP SW ON

—

CRNT

1 – 39

SEC-54

B2110: INTRLCK/PNP SW OFF

—

CRNT

1 – 39

SEC-59

MWI

THE FUEL GAUGE POINTER DOES NOT MOVE

MWI-165

< SYMPTOM DIAGNOSIS >

C

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SYMPTOM DIAGNOSIS

THE FUEL GAUGE POINTER DOES NOT MOVE

Description

INFOID:0000000004204134

Fuel gauge needle will not move from a certain position.

Diagnosis Procedure

INFOID:0000000004204135

1.

CHECK COMBINATION METER INPUT SIGNAL

1. Select “METER/M&A” on CONSULT-III.

2. Using “FUEL METER” of “DATA MONITOR”, compare the monitor value with the fuel gauge reading on

the combination meter. Refer to 

MWI-46, "Component Function Check"

.

Does monitor value match fuel gauge reading?

YES

>> GO TO 2

NO

>> Replace combination meter. Refer to 

MWI-176, "Removal and Installation"

.

2.

CHECK FUEL LEVEL SENSOR SIGNAL CIRCUIT

Check the fuel level sensor signal circuit. Refer to 

MWI-46, "Diagnosis Procedure"

. 

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK FUEL LEVEL SENSOR UNIT

Perform a unit check for the fuel level sensor unit. Refer to 

MWI-47, "Component Inspection"

. 

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Replace fuel level sensor unit. Refer to 

FL-6, "Removal and Installation"

.

4.

CHECK FLOAT INTERFERENCE

Check that the float arm does not interfere or bind with any of the components in the fuel tank.
Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-176, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.

MWI-166

< SYMPTOM DIAGNOSIS >

THE FUEL GAUGE POINTER DOES NOT MOVE TO "F" WHEN REFUELING

THE FUEL GAUGE POINTER DOES NOT MOVE TO "F" WHEN REFUEL-
ING

Description

INFOID:0000000004204136

The fuel gauge needle will not move to “F” position when refueling.

Diagnosis Procedure

INFOID:0000000004204137

1.

OBSERVE FUEL GAUGE

Does it take a long time for the pointer to move to FULL position?
YES or NO

YES

>> GO TO 2

NO

>> GO TO 3

2.

IDENTIFY FUELING CONDITION

Was the vehicle fueled with the ignition switch ON?
YES or NO

YES

>> Be sure to fuel the vehicle with the ignition switch OFF. Otherwise, it will take a long time to move

to FULL position because of the characteristic of the fuel gauge.

NO

>> GO TO 3

3.

OBSERVE VEHICLE POSITION

Is the vehicle parked on an incline?
YES or NO

YES

>> Check the fuel level indication with vehicle on a level surface.

NO

>> GO TO 4

4.

OBSERVE FUEL GAUGE POINTER

During driving, does the fuel gauge pointer move gradually toward EMPTY position?
YES or NO

YES

>> Check the components. Refer to 

MWI-47, "Component Inspection"

.

NO

>> The float arm may interfere or bind with any of the components in the fuel tank.

MWI

THE OIL PRESSURE WARNING LAMP DOES NOT TURN ON

MWI-167

< SYMPTOM DIAGNOSIS >

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THE OIL PRESSURE WARNING LAMP DOES NOT TURN ON

Description

INFOID:0000000004204138

The oil pressure warning lamp stays off when the ignition switch is turned ON.

Diagnosis Procedure

INFOID:0000000004204139

1.

CHECK OIL PRESSURE WARNING LAMP

Perform IPDM E/R auto active test. Refer to 

PCS-14, "Diagnosis Description"

.

Is oil pressure warning lamp illuminated?

YES

>> GO TO 2

NO

>> Replace combination meter. Refer to 

MWI-176, "Removal and Installation"

.

2.

CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT

Check the oil pressure switch signal circuit. Refer to 

MWI-48, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK OIL PRESSURE SWITCH UNIT

Perform a unit check for the oil pressure switch. Refer to 

MWI-48, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-48, "Removal and Installation"

.

NO

>> Replace oil pressure switch.