Infiniti FX35, FX50 (S51). Manual - part 1426

PCS-62

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

B261A PUSH-BUTTON IGNITION SWITCH

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.

Connect BCM connector.

2.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace BCM. Refer to 

BCS-83, "Removal and Installation"

.

5.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)

1.

Disconnect BCM connector and IPDM E/R connector.

2.

Check continuity between BCM harness connector and push-button ignition switch harness connector.

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-36, "Intermittent Incident"

.

>> INSPECTION END

IPDM E/R

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

E5

28

M50

4

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E5

28

Not existed

(+)

(–)

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M122

89

Ground

Battery voltage

BCM

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

M122

89

M50

4

Existed

BCM

Ground

Continuity

Connector

Terminal

M122

89

Not existed

PCS

POWER SUPPLY AND GROUND CIRCUIT

PCS-63

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

POWER SUPPLY AND GROUND CIRCUIT

BCM

BCM : Diagnosis Procedure

INFOID:0000000005589415

1.

CHECK FUSE AND FUSIBLE LINK

Check that the following fuse and fusible link are not blown.

Is the fuse fusing?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is

blown.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connectors.

3.

Check voltage between BCM 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 BCM harness connector and ground.

Does continuity exist?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Signal name

Fuse and fusible link No.

Battery power supply

L

10

Terminals

Voltage

(Approx.)

(+)

(

−

)

BCM

Ground

Connector

Terminal

M118

1

Battery voltage

M119

11

BCM

Ground

Continuity

Connector

Terminal

M119

13

Existed

PCS-64

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

PUSH-BUTTON IGNITION SWITCH

PUSH-BUTTON IGNITION SWITCH

Description

INFOID:0000000005240697

BCM transmits the change in the power supply position with the push-button ignition switch to IPDM E/R via
the CAN communication line. IPDM E/R transmits the power supply position status via CAN communication
line to BCM.

Component Function Check

INFOID:0000000005240698

1.

CHECK FUNCTION

1.

Select “PUSH SW” in “Data Monitor” mode with CONSULT-III. 

2.

Check the push-button ignition switch signal under the following condition.

Is the indication normal?

YES

>> INSPECTION END

NO

>> Go to  

PCS-64, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005240699

1.

CHECK PUSH-BUTTON IGNITION SWITCH OPERATION

Press push-button ignition switch and check if it turns ON.
Does ignition switch turn ON?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)

1.

Disconnect push-button ignition switch connector and BCM connector.

2.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace IPDM E/R. Refer to 

PCS-34, "Removal and Installation"

.

3.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)

1.

Disconnect IPDM E/R connector.

2.

Check continuity between IPDM E/R harness connector and push-button ignition switch harness connec-
tor.

3.

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

Test item

Condition

Status

PUSH SW

Push-button ignition switch is pressed

ON

Push-button ignition switch is not pressed

OFF

(+)

(–)

Voltage (V)

(Approx.)

IPDM E/R

Connector

Terminal

E5

28

Ground

Battery voltage

IPDM E/R

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

E5

28

M50

4

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E5

28

Not existed

PCS

PUSH-BUTTON IGNITION SWITCH

PCS-65

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

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 connector and IPDM E/R connector.

2.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace BCM. Refer to 

BCS-83, "Removal and Installation"

.

5.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)

1.

Disconnect BCM connector.

2.

Check continuity between BCM harness connector and push-button ignition switch harness connector.

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 PUSH-BUTTON IGNITION SWITCH

Refer to 

GI-36, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace push-button ignition switch. Refer to 

PCS-133, "Removal and Installation"

.

7.

CHECK PUSH-BUTTON IGNITION SWITCH GROUND CIRCUIT

Check continuity between push-button ignition switch and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace harness.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "Intermittent Incident"

.

>> INSPECTION END

(+)

(–)

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M122

89

Ground

Battery voltage

BCM

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

M122

89

M50

4

Existed

BCM

Ground

Continuity

Connector

Terminal

M122

89

Not existed

Push-button ignition switch

Ground

Continuity

Connector

Terminal

M50

1

Existed