Nissan Frontier D22. Manual - part 150

REMOTE KEYLESS ENTRY SYSTEM

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DOOR SWITCH CHECK

1. 

CHECK DOOR SWITCH INPUT SIGNAL

Check voltage between smart entrance control unit connector M110 terminals 1 (G/R), 2 (R/B) or 3 (R/B)
(Crew Cab with vehicle security system) and ground.

Refer to

BL-32, "Wiring Diagram — KEYLES —"

 .

OK or NG

OK

>> Door switch is OK.

NG

>> GO TO 2.

2. 

CHECK DOOR SWITCH

1.

Disconnect door switch harness connector.

2.

Check continuity between door switch terminals.

OK or NG

OK

>> Check the following.

●

Front door switch LH ground circuit or door switch ground condition

●

Harness for open or short between smart entrance control unit and door switch

NG

>> Replace door switch.

WEL517A

Door switch is pressed

: Continuity should not exist.

Door switch is released 

: Continuity should exist.

AEL577C

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REMOTE KEYLESS ENTRY SYSTEM

KEY SWITCH (INSERTED) CHECK

1. 

CHECK KEY SWITCH INPUT SIGNAL

1.

Disconnect smart entrance control unit harness connector.

2.

Check voltage between smart entrance control unit harness connector M111 terminal 25 (W/G) and
ground.

Refer to 

BL-32, "Wiring Diagram — KEYLES —"

 .

OK or NG

OK

>> Key switch is OK.

NG

>> GO TO 2.

2. 

CHECK KEY SWITCH POWER SUPPLY

1.

Disconnect key switch harness connector.

2.

Check voltage between key switch harness connector terminal 1
and ground.

Battery voltage should exist.
Refer to 

BL-32, "Wiring Diagram — KEYLES —"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Check the following

●

7.5A fuse [No. 28, located in the fuse block (J/B)]

●

Harness for open or short between key switch and
fuse

3. 

CHECK KEY SWITCH (INSERTED)

Check continuity between terminals 1 and 2.

OK or NG

OK

>> Check harness for open or short between smart

entrance control unit and key switch.

NG

>> Replace key switch.

LEL053A

AEL415B

Continuity

Condition of key switch

: Key is inserted.

Yes

Condition of key switch

: Key is removed.

No

AEL416B

REMOTE KEYLESS ENTRY SYSTEM

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HAZARD REMINDER CHECK

1. 

CHECK HAZARD INDICATOR

Check if hazard indicator flashes with hazard switch.

Does hazard indicator operate?

Yes

>> GO TO 2.

No

>> Check “hazard indicator” circuit. Refer to 

LT-28, "Trouble Diagnoses"

 .

2. 

CHECK KEYFOB OPERATION

Check door lock/unlock operation with keyfob.

Does door lock/unlock operate?

Yes

>> GO TO 3.

No

>> Check keyfob battery. Refer to 

BL-35, "KEYFOB BATTERY CHECK"

 .

3. 

CHECK HAZARD REMINDER OUTPUT SIGNAL

Measure voltage between smart entrance control unit connector M111 terminals 47 (G/Y) and 48 (G/R), and
ground with CONSULT-II or voltmeter when hazard reminder is operated.

OK or NG

OK

>> Check harness for open or short between smart entrance control unit and turn signal lamps.

NG

>> Replace smart entrance control unit.

INTERIOR ROOM LAMP OPERATION CHECK

1. 

CHECK INTERIOR ROOM LAMP

Check if the interior room lamp switch is in the “ON” position and the lamp illuminates.

Does interior room lamp illuminate?

Yes

>> GO TO 2.

No

>> Check the following.

●

Harness for open or short between smart entrance control unit and interior room lamp

●

Interior room lamp

WEL816A

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REMOTE KEYLESS ENTRY SYSTEM

2. 

CHECK INTERIOR ROOM LAMP CIRCUIT

When interior room lamp switch is in “DOOR” position, check voltage across smart entrance control unit con-
nector M111 terminal 31 (R/B) and ground.

Refer to 

BL-32, "Wiring Diagram — KEYLES —"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness between smart entrance control unit and interior room lamp.

3. 

CHECK CONTROL UNIT OUTPUT

Push unlock button of keyfob with key removed and all doors closed, and check voltage across smart entrance
control unit connector M111 terminal 31 (R/B) and ground.

OK or NG

OK

>> Check system again.

NG

>> Replace smart entrance control unit.

LEL055A

LEL056A