Infiniti FX35, FX50 (S51). Manual - part 1217

INL-68

< DTC/CIRCUIT DIAGNOSIS >

DOOR SWITCH CIRCUIT

2.

Disconnect the total illumination control unit connector.

3.

Turn ignition switch ON.

4.

Check voltage between the total illumination control unit harness connector and ground.

Does continuity exist?

YES

>> Replace the total illumination control unit. 

NO

>> GO TO3.

3.

CHECK EACH DOOR SWITCH SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect each door switch connector.

3.

Check continuity between the total illumination control unit harness connector and each door switch har-
ness connector.

Does continuity exist?

YES

>> GO TO 4.

NO

>> Repair the harnesses or connectors.

4.

CHECK EACH DOOR SWITCH SIGNAL CIRCUIT FOR SHORT

Check continuity between total illumination control unit harness connector and ground.

Total illumination control unit

Ground

Voltage (Approx.)

Connector

Terminal

Front door
(driver side)

M129

29

8.5 - 9.0 V

Front door
(passenger 
side)

8

Rear door
(LH)

9

Rear door
(RH)

25

JPMIA0594GB

Total illumination control unit

Door switch

Continuity

Connector

Terminal

Connector

Terminal

Front door
(driver side)

M129

29

B16

2

Existed

Front door
(passenger 
side)

8

B216

2

Rear door
(LH)

9

B23

2

Rear door
(RH)

25

B223

2

Total illumination control unit

Ground

Continuity

Connector

Terminal

Front door
(driver side)

M129

29

Not existed

Front door
(passenger 
side)

8

Rear door
(LH)

9

Rear door
(RH)

25

DOOR SWITCH CIRCUIT

INL-69

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

INL

N

O

P

Does continuity exist?

YES

>> Repair the harnesses or connectors.

NO

>> Check each door switch. Refer to 

DLK-71, "Component Inspection"

.

INL-70

< DTC/CIRCUIT DIAGNOSIS >

ROOM LAMP REQUEST SIGNAL CIRCUIT

ROOM LAMP REQUEST SIGNAL CIRCUIT

Component Function Check

INFOID:0000000005245610

1.

CHECK ROOM LAMP TIMER SETTING

CONSULT-III WORK SUPPORT

1.

Select “SET I/L D-UNLCK INTCON” of BCM (INT LAMP) work support item.

2.

Check the setting status.

Is the setting “On”?

YES

>> GO TO 2.

NO

>> Change the setting to “On”

2.

CHECK ROOM LAMP TIMER SIGNAL BY CONSULT-III

CONSULT-III DATA MONITOR

1.

Turn ignition switch OFF.

2.

Select “ROOM LAMP REQ” of TOTAL ILLUM C/U data monitor item.

3.

While operating the door lock/door unlock, check the monitor status.

Is the item status normal?

YES

>> Room lamp timer signal circuit is normal.

NO

>> Refer to 

INL-70, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005245611

1.

CHECK ROOM LAMP TIMER SIGNAL INPUT

CONSULT-III ACTIVE TEST

1.

Turn ignition switch ON.

2.

Select “INT LAMP” of BCM (INT LAMP) active test item.

3.

While operating the test items, check voltage between total illumination control unit harness connector
and ground.

Is the measurement value normal?

YES

>> Replace the total illumination control unit.

NO

>> GO TO 2.

2.

CHECK ROOM LAMP TIMER SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect the total illumination control unit and BCM connectors.

3.

Check continuity between the total illumination control unit harness connector and BCM harness connec-
tor.

Work support item

Setting status

SET I/L D-UNLCK INTCON 

On

Monitor item

Condition

Monitor status

ROOM LAMP REQ

Door is unlocked

On

Door is locked

Off

Total illumination control 

unit

Ground

Test item

Voltage

(Approx.)

Connector

Terminal

INT LAMP

M129

28

On

5 V

Off

0 V

ROOM LAMP REQUEST SIGNAL CIRCUIT

INL-71

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

INL

N

O

P

Does continuity exist?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors.

3.

CHECK ROOM LAMP TIMER SIGNAL FOR SHORT

Check continuity between the total illumination control unit harness connector and ground.

Does continuity exist?

YES

>> Repair the harnesses or connectors.

NO

>> Replace the BCM.

Diagnosis Procedure

INFOID:0000000005245612

Total illumination control unit

BCM

Continuity

Connector

Terminal

Connector

Terminal

M129

28

M119

19

Existed

Total illumination control unit

Ground

Continuity

Connector

Terminal

M129

28

Not existed