Infiniti QX56 (Z62). Manual - part 979

PCS-72

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

PUSH-BUTTON IGNITION SWITCH

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT 2

1.

Disconnect BCM 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.

Is the inspection result normal?

YES

>> Replace IPDM E/R.

NO

>> Repair or replace harness.

5.

CHECK PUSH-BUTTON IGNITION SWITCH GROUND CIRCUIT 

Check continuity between push-button ignition switch 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 

PCS-72, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace push-button ignition switch.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006220224

1.

CHECK PUSH-BUTTON IGNITION SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect push-button ignition switch connector.

3.

Check continuity between push-button ignition switch terminals.

(+)

(–)

Voltage (V)

(Approx.)

IPDM E/R

Connector

Terminal

E17

66

Ground

Battery voltage

IPDM E/R

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

E17

66

M101

4

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E17

66

Not existed

Push-button ignition switch

Ground

Continuity

Connector

Terminal

M101

1

Existed

PCS

PUSH-BUTTON IGNITION SWITCH

PCS-73

< 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

>> INSPECTION END

NO

>> Replace push-button ignition switch.

Push-button ignition switch

Condition

Continuity

Terminal

4

1

Pressed

Existed

Not pressed

Not existed

PCS-74

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

PUSH-BUTTON IGNITION SWITCH POSITION INDICATOR

PUSH-BUTTON IGNITION SWITCH POSITION INDICATOR

Description

INFOID:0000000006220225

Push-button ignition switch changes the power supply position.
BCM maintains the power supply position status.
BCM changes the power supply position with the operation of the push-button ignition switch.

Component Function Check

INFOID:0000000006220226

1.

CHECK FUNCTION

Check push-button ignition switch (“LOCK INDICATOR”, “ACC INDICATOR” and “IGNITION ON IND”) in
Active Test of BCM with CONSULT-III.

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> Refer to 

PCS-74, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006220227

1.

CHECK PUSH-BUTTON IGNITION SWITCH INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect push-button ignition switch connector.

3.

Check voltage between push-button ignition switch harness connector and ground.

Is the inspection normal?

YES

>> GO TO 2.

NO-1

>> Check 10 A fuse [No.10, located in fuse block (J/B)].

NO-2

>> Check harness for open or short between push-button ignition switch and fuse.

2.

CHECK BCM INPUT

1.

Connect push-button ignition switch connector.

2.

Disconnect BCM connector.

3.

Check voltage between BCM connector and ground.

Is the inspection normal?

YES

>> Replace BCM. Refer to 

BCS-81, "Removal and Installation"

.

NO

>> GO TO 3.

3.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT

1.

Disconnect push-button ignition switch connector.

Test item

Description

LOCK INDICATOR
ACC INDICATOR
IGNITION ON IND

ON

Position indicator

 Illuminates

OFF

Does not illuminate

(+)

(–)

Voltage (V)

(Approx.)

Push-button ignition switch

Connector

Terminal

M101

8

Ground

Battery voltage

(+)

(–)

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M101

73

Ground

Battery voltage

91

109

PCS

PUSH-BUTTON IGNITION SWITCH POSITION INDICATOR

PCS-75

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

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 normal?

YES

>> Replace push-button ignition switch.

NO

>> Repair or replace harness.

Indicator

BCM

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

LOCK

M71

91

M101

5

Existed

ACC

109

6

ON

73

7

Indicator

BCM

Ground

Continuity

Connector

Terminal

LOCK

M71

91

Not existed

ACC

109

ON

73