Infiniti F50. Manual - part 659

INTERIOR ROOM LAMP

LT-103

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Door Switch System Check

EKS006ZN

1. 

CHECK DOOR SWITCH SIGNAL

With CONSULT-II

●

Operate each door via “DOOR SW” on DATA MONITOR screen
and make sure that the switch turns on and off as commanded.

Without CONSULT-II

●

Operate each door and via “switch monitor” of the self-diagnosis function and make sure that the switch
turns on and off as commanded.

OK or NG

OK

>> Door switch is OK.

NG

>> GO TO 2.

2. 

CHECK FRONT DOOR SWITCH (DRIVER SIDE) CIRCUIT

1.

Turn ignition switch to OFF position.

2.

Disconnect the BCM connector and the front door switch (driver side) connector.

3.

Check continuity between BCM harness connector B4 terminal
142 (W/R) and front door switch (driver side) harness connector
B20 terminal 1 (W/R).

4.

Check continuity between BCM harness connector B4 terminal
142 (W/R) and ground.

NOTE:
If front door switch (driver side) is normal, skip this procedure and go
to 3.

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness or connector.

SKIA0441E

Continuity should exist. 

Continuity should not exist.

SKIA3963E

LT-104

INTERIOR ROOM LAMP

3. 

CHECK FRONT DOOR SWITCH (PASSENGER SIDE) CIRCUIT

1.

Disconnect the front door switch (passenger side) connector.

2.

Check continuity between BCM harness connector M4 terminal
37 (W/G) and front door switch (passenger side) harness con-
nector B220 terminal 1 (W/G).

3.

Check continuity between BCM harness connector M4 terminal
37 (W/G) and ground.

NOTE:
If front door switch (passenger side) is normal, skip this procedure
and go to 4.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

4. 

CHECK DOOR LOCK ASSEMBLY REAR LH (DOOR SWITCH) CIRCUIT

1.

Disconnect the door lock assembly rear LH connector.

2.

Check continuity between BCM harness connector M4 terminal
33 (W) and door lock assembly rear LH harness connector D62
terminal 1 (W).

3.

Check continuity between BCM harness connector M4 terminal
33 (W) and ground.

NOTE:
If door lock assembly rear LH (door switch) is normal, skip this pro-
cedure and go to 5.

OK or NG

OK

>> GO TO 5.

NG

>> Repair harness or connector.

5. 

CHECK DOOR LOCK ASSEMBLY REAR RH (DOOR SWITCH) CIRCUIT

1.

Disconnect door lock assembly rear RH connector.

2.

Check continuity between BCM harness connector B4 terminal
143 (W/L) and door lock assembly rear RH harness connector
D82 terminal 1 (W).

3.

Check continuity between BCM harness connector B4 terminal
143 (W/L) and ground.

NOTE:
If door lock assembly rear RH (door switch) is normal, skip this pro-
cedure and go to 6.

OK or NG

OK

>> GO TO 6.

NG

>> Repair harness or connector.

Continuity should exist. 

Continuity should not exist.

SKIA3964E

Continuity should exist. 

Continuity should not exist.

SKIA4485E

Continuity should exist. 

Continuity should not exist.

SKIA4486E

INTERIOR ROOM LAMP

LT-105

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6. 

CHECK DOOR SWITCH

1.

Check continuity between front door switch connector B20,
B220 terminal 1 and ground while turning the door switches ON
(open) and OFF (closed).

2.

Check continuity between door lock assembly rear LH, RH (door
switch) connector D62, D82 terminals 1 and 2 while turning the
door switches ON (open) and OFF (closed).

OK or NG

OK

>> Check front door switch case ground condition or door

lock assembly rear LH, RH (door switch) ground circuit.

NG

>> Replace the door switch.

Key Switch and Key Lock Solenoid System Check

EKS000X9

1. 

CHECK KEY SWITCH AND KEY LOCK SOLENOID SIGNAL

With CONSULT-II

●

Insert and withdrawn the key via “IGN KEY SW” on DATA MON-
ITOR screen and check that the switch turns on and off accord-
ingly.

Without CONSULT-II

●

Check voltage between BCM connector M4 terminal 69(PU/W)
and body ground while inserting and withdrawn the key.

OK or NG

OK

>> Key switch and key lock solenoid is OK.

NG

>> GO TO 2.

Connector

Terminal

Condition

Continuity

B20

1

Ground

ON (Door open)

Yes

B220

OFF (Door closed)

No

SKIA4028E

Connector

Terminal

Condition

Continuity

D62

1

2

ON (Door open)

Yes

D82

OFF (Door closed)

No

SKIA4487E

SKIA0445E

Key withdrawn (switch OFF)

: approx. 0V

Key inserted (switch ON)

: approx. 12V

SKIA0446E

LT-106

INTERIOR ROOM LAMP

2. 

CHECK HARNESS CONTINUITY

1.

Disconnect the BCM connector and key switch connector.

2.

Check continuity at the harness between BCM harness connec-
tor M4 terminal 69(PU/W) and the key switch and key lock sole-
noid harness connector M64 terminal 4(PU/W).

3.

Check continuity between BCM harness connector M4 terminal
69(PU/W) and body ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK KEY SWITCH AND KEY LOCK SOLENOID

Check continuity between the key switch and key lock solenoid har-
ness connector M64 terminals 3(LG) and 4(PU/W) while inserting
and withdrawing the ignition key.

OK or NG?

OK

>> GO TO 4.

NG

>> Replace the key switch and key lock solenoid.

4. 

CHECK POWER SUPPLY CIRCUIT

Check voltage between the key switch and key lock solenoid har-
ness connector M64 terminal 3(LG) and body ground.

OK or NG

OK

>> Key switch and key lock solenoid is OK.

NG

>> Check harness for open and short between key switch

and key lock solenoid and fuse.

69(PU/W) - 4(PU/W)

: Continuity should exist.

69(PU/W) - Body ground

: Continuity should not exist.

SKIA3932E

Key withdrawn 
(switch OFF)

: Continuity should not exist.

Key inserted 
(switch ON)

: Continuity should exist.

SKIA3933E

3(LG) - Body ground

: Battery voltage should exist.

SKIA3934E