Door Key Cylinder Switch Check

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 DOOR KEY CYLINDER SWITCH INPUT SIGNAL

With CONSULT-II

Check door key cylinder switch ("KEY CYL LK SW") in "DATA MONITOR" mode with CONSULT-II.
"KEY CYL LK-SW" should be "ON" when key inserted in door key cylinder is turned to lock.
Check door key cylinder switch ("KEY CYL UN-SW") in "DATA MONITOR" mode with CONSULT-II.

Fig 1: Display CONSULT-II - Data Monitor Screen
Courtesy of NISSAN MOTOR CO., U.S.A.

"KEY CYL UN-SW" should be "ON" when key inserted in door key cylinder is turned to unlock.

Without CONSULT-II

Check voltage between power window main switch (door lock and unlock switch) connector and ground.

TERMINALS VOLTAGE REFERENCE

Connector	Terminal (Wire color)		Key position	Voltage [V] (Approx.)
Connector	(+)	(-)	Key position	Voltage [V] (Approx.)
D7	4 (R/W)	Ground	Neutral/Unlock	5
	4 (R/W)		Lock	0
	6 (L/W)		Neutral/Lock	5
	6 (L/W)		Unlock	0

Fig 2: Identifying Voltage Between Power Window Main Switch Connector And Ground

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

OK or NG

OK: Further inspection is necessary. Refer to TROUBLE DIAGNOSIS SYMPTOM CHART .
NG: GO TO 2.

CHECK DOOR KEY CYLINDER SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect power window main switch (door lock and unlock switch) and door key cylinder switch connector.
3. Check continuity between power window main switch (door lock and unlock switch) connector D7 terminals 4, 6 and door key cylinder switch connector D12 terminals 1, 3.
  4 (R/W) - 1 (R/W) :Continuity should exist.
  
  6 (L/W) - 3 (L/W) :Continuity should exist.
4. Check continuity between power window main switch (door lock and unlock switch) connector D7 terminals 4, 6 and ground.
  
  Fig 3: Identifying Continuity Between Power Window Main Switch Connector D7 Terminals 4, 6 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  4 (R/W) - Ground :Continuity should not exist.
  
  6 (L/W) - Ground :Continuity should not exist.
OK or NG
- OK: GO TO 3.
- NG: Repair or replace harness between power window main switch and door key cylinder switch.
CHECK DOOR KEY CYLINDER SWITCH GROUND CHECK
Check continuity between door key cylinder switch connector D12 terminal 2 and ground.

2 (B) - Ground :Continuity should exist.

Fig 4: Identifying Continuity Between Door Key Cylinder Switch Connector D12 Terminal 2 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: GO TO 4.
- NG: Repair or replace harness.

CHECK DOOR KEY CYLINDER SWITCH

Check continuity between door key cylinder switch terminals 1, 3 and 2.

TERMINALS CONTINUITY REFERENCE

Terminals		Key position	Continuity
1	2	Neutral / Unlock	No
1		Lock	Yes
3		Neutral / Lock	No
3		Unlock	Yes

Fig 5: Identifying Continuity Between Door Key Cylinder Switch Terminals 1, 3 And 2

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

OK or NG

OK: Further inspection is necessary. Refer to TROUBLE DIAGNOSIS SYMPTOM CHART .
NG: Replace door key cylinder switch.