Check Trunk Room Lamp Switch

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK TRUNK ROOM LAMP SWITCH INPUT SIGNAL

With CONSULT-II

Check ("TRUNK SW") in "DATA MONITOR" mode with CONSULT-II.

MONITOR ITEM AND CONDITION REFERENCE

Monitor item	Condition
TRUNK SW	OPEN : ON
TRUNK SW	CLOSE : OFF

Fig 1: Display CONSULT-II - Data Monitor Screen

Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

Turn ignition switch OFF.
Check voltage between BCM harness connector and ground.

TERMINALS VOLTAGE REFERENCE

Connector	Terminal (Wire color)		Trunk condition	Voltage (V) (Approx.)
Connector	(+)	(-)	Trunk condition	Voltage (V) (Approx.)
B4	57 (R/W)	Ground	CLOSE	Battery voltage
B4	57 (R/W)	Ground	OPEN	0

Fig 2: Identifying Voltage Between BCM Harness Connector And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Trunk room lamp switch circuit is OK.
NG: GO TO 2.

CHECK TRUNK ROOM LAMP SWITCH

Turn ignition switch OFF.
Disconnect trunk room lamp switch connector.
Check continuity between trunk room lamp switch terminals 1 and 2.

TERMINALS CONTINUITY REFERENCE

Terminal		Back door condition	Continuity
1	2	Closed	No
1	2	Open	Yes

Fig 3: Identifying Continuity Between Trunk Room Lamp Switch Terminals 1 And 2

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.
NG: Replace trunk room lamp switch.

CHECK TRUNK ROOM LAMP SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector B4 terminal 57 and trunk room lamp switch harness connector B105 terminal 1.
  57 (R/W) - 1 (R/W) : Continuity should exist.
  
  Fig 4: Identifying Continuity Between BCM Harness Connector B4 Terminal 57 And Trunk Room Lamp Switch Harness Connector B105 Terminal 1
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between harness connector B4 terminals 57 and ground.
  57 (R/W) - Ground : Continuity should not exist.
OK or NG
- OK: GO TO 4.
- NG: Repair or replace harness between BCM and trunk room lamp switch.
CHECK TRUNK ROOM LAMP SWITCH GROUND CIRCUIT
Check continuity between trunk room lamp switch harness connector B105 terminal 2 and ground.

2 (B) - Ground : Continuity should exist.

OK or NG
- OK: Check connection of harness and connector.
- NG: Repair or replace trunk room lamp switch ground circuit.
  
  Fig 5: Identifying Continuity Between Trunk Room Lamp Switch Harness Connector B105 Terminal 2 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.