Nissan Altima L32. Instruction — part 1003

PCS-76

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B261A PUSH-BUTTON IGNITION SWITCH

1. Disconnect IPDM E/R and BCM.

2. Check continuity between IPDM E/R harness connector (A) and

push-button ignition switch harness connector (B).

3. Check continuity between IPDM E/R harness connector and

ground.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Repair or replace harness.

4.

CHECK IGNITION SWITCH OUTPUT SIGNAL (BCM)

1. Disconnect push-button ignition switch.

2. Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Replace BCM. Refer to

BCS-96, "Removal and Installation"

.

5.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)

1. Disconnect BCM and IPDM E/R.

2. Check continuity between BCM harness connector (A) and

push-button ignition switch harness connector (B).

IPDM E/R

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

E18 (A)

28

M38 (B)

4

Yes

ALMIA0091ZZ

IPDM E/R

Ground

Continuity

Connector

Terminal

E18

28

No

ALMIA0092ZZ

Terminals

Voltage (V)

(+)

(-)

BCM

Ground

Connector

Terminal

M19

77

Battery voltage

ALMIA0093ZZ

BCM

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

M19 (A)

77

M38 (B)

4

Yes

ALMIA0094ZZ

PCS

B261A PUSH-BUTTON IGNITION SWITCH

PCS-77

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

3. Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Repair or replace harness.

6.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

.

>> Inspection End.

BCM

Ground

Continuity

Connector

Terminal

M19

77

No

ALMIA0095ZZ

PCS-78

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

BCM
BCM : Diagnosis Procedure

INFOID:0000000004495164

1.

CHECK FUSE AND FUSIBLE LINK

Check if the following BCM fuse 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.

BCM : Special Repair Requirement

INFOID:0000000004495165

1.

REQUIRED WORK WHEN REPLACING BCM

Initialize control unit. Refer to

BCS-6, "CONFIGURATION (BCM) : Special Repair Requirement"

.

>> Work End.

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

Terminal No.

Signal name

Fuse and fusible link No.

1

Battery power supply

H

11

10

Terminals

Voltage

(Approx.)

(+)

(

−)

BCM

Ground

Connector

Terminal

M16

1

Battery voltage

M17

11

ALCIA0025ZZ

BCM

Ground

Continuity

Connector

Terminal

M17

13

Yes

ALCIA0024ZZ

PCS

POWER SUPPLY AND GROUND CIRCUIT

PCS-79

< COMPONENT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

agnosis Procedure

INFOID:0000000004495166

1.

CHECK FUSES AND FUSIBLE LINK

Check that the following IPDM E/R fuses or fusible link are not blown.

Is the fuse 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 IPDM E/R connectors.

3. Check voltage between IPDM E/R harness connector and

ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

Check continuity between IPDM E/R harness connectors and

ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

Terminal No.

Signal name

Fuses and fusible link No.

1, 2

Battery power supply

B, D

—

42

43

Terminals

Voltage (V)

(Approx.)

(+)

(

−)

IPDM E/R

Connector

Terminal

Ground

E16

1

Battery voltage

2

ALCIA0033ZZ

IPDM E/R

Ground

Continuity

Connector

Terminal

A: E18

12

Yes

B: E17

41

ALCIA0034ZZ