Infiniti Q45. Manual - part 226

VEHICLE SECURITY (THEFT WARNING) SYSTEM

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Diagnostic Procedure 1

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1 – 1 CHECK FRONT DOOR SWITCH

1. 

CHECK FRONT DOOR SWITCH INPUT SIGNAL

 With CONSULT-II

Check front door switch (“DOOR SW-DR” and “DOOR SW-AS”) in “DATA MONITOR” mode with CONSULT-II.

Without CONSULT-II

Check front door switch in “SWITCH MONITOR” mode.Refer to 

BL-82, "SWITCH MONITOR"

 .

OK or NG

OK

>> Front door switch is OK.

NG

>> GO TO 2

2. 

CHECK FRONT DOOR SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front door switch connector and BCM connector.

3.

Check continuity between front door switch connector B20 (driver), B220 (passenger) terminal 1 and BCM
connector M4 (passenger), B4 (driver) terminal 37, 142.

4.

Check continuity between front door switch connector B20
(driver), B220 (passenger) terminal 1 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

Monitor item

Condition

DOOR SW-DR

OPEN

: ON

CLOSE

: OFF

DOOR SW-AS

OPEN

: ON

CLOSE

: OFF

PIIA2464E

Driver side door switch

1 (W/R) – 142 (W/R)

: Continuity should exist.

Passenger side door switch

1 (W/G) – 37 (W/G)

: Continuity should exist.

Each door switch 

1 (W/R, W/G) – Ground

: Continuity should not exist.

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VEHICLE SECURITY (THEFT WARNING) SYSTEM

3. 

CHECK FRONT DOOR SWITCH

Check continuity between front door switch terminal 1 and ground
part of door switch.

OK or NG

OK

>> Check door switch case ground. If door switch case

ground is OK, replace BCM.

NG

>> Replace malfunction front door switch.

1 – 2 CHECK REAR DOOR SWITCH

1. 

CHECK REAR DOOR SWITCH INPUT SIGNAL

 With CONSULT-II

Check rear door switch (“DOOR SW-RR” and “DOOR SW-RL”) in “DATA MONITOR” mode with CONSULT-II.

Without CONSULT-II

Check front door switch in “SWITCH MONITOR” mode.Refer to 

BL-82, "SWITCH MONITOR"

 .

OK or NG

OK

>> Rear door switch is OK.

NG

>> GO TO 2

Terminal

Front door switch

Continuity

1

Ground part of 

door switch

Pushed

No

Released

Yes

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Monitor item

Condition

DOOR SW-RR

OPEN

: ON

CLOSE

: OFF

DOOR SW-RL

OPEN

: ON

CLOSE

: OFF

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VEHICLE SECURITY (THEFT WARNING) SYSTEM

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2. 

CHECK DOOR SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect door switch and BCM connector.

3.

Check continuity between rear door switch connector D62 (rear LH), D82 (rear RH) terminal 1 and BCM
connector M4 (rear LH), B4 (rear RH) terminal 33, 143.

4.

Check continuity between rear door switch connector D62, D82
terminal 1 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK REAR DOOR SWITCH GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect rear door switch and BCM connector.

3.

Check continuity between rear door switch connector D62 (rear LH), D82 (rear RH) terminal 2 and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

Rear door switch LH

1 (W) – 33 (W)

: Continuity should exist.

Rear door switch RH

1 (W) – 143 (W/L)

: Continuity should exist.

Each door switch

1 (W) – Ground

: Continuity should not exist.

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2 (B) – Ground

: Continuity should exist.

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BL-176

VEHICLE SECURITY (THEFT WARNING) SYSTEM

4. 

CHECK FRONT DOOR SWITCH

Check continuity between rear door switch (rear LH), (rear RH) ter-
minals 1 and 2.

OK or NG

OK

>> Door lock assembly rear is OK, replace BCM.

NG

>> Replace malfunction door lock assembly rear (door

switch).

1 – 3 CHECK HOOD SWITCH

1. 

CHECK HOOD SWITCH INPUT SIGNAL

 With CONSULT-II

Check “HOOD SWITCH” in “DATA MONITOR” mode with CON-
SULT

−

II.

 Without CONSULT-II

Check hood switch in Switch monitor mode.
Refer to Remote keyless entry system 

BL-82, "SWITCH MONITOR"

.

OK or NG

OK

>> Hood switch is OK.

NG

>> GO TO 2.

2. 

CHECK HOOD SWITCH CONDITION

Check hood switch and hood fitting condition.

OK or NG

OK

>> GO TO 3.

NG

>> Adjust installation of hood switch.

3. 

CHECK HOOD SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect hood switch connector.

3.

Check continuity between hood switch terminals 1 and 2.

OK or NG

OK

>> Check the following. Repair or replace following item, 

when there is a malfunction.

●

Hood switch ground circuit

●

Harness for open or short between hood switch and
BCM

NG

>> Replace hood switch.

Terminal

Condition of rear door

Continuity

1

2

Close

No

Open

Yes

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When hood is open

: HOOD SW ON

When hood is closed

: HOOD SW OFF

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Terminal

Condition of hood

Continuity

1

 

2

Closed

No

Open

Yes

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