Nissan Altima 2007-2012 Service Manual: Key cylinder switch
Description
For vehicles equipped with LH and RH anti-pinch system, the main power window and door lock/unlock switch detects condition of the door key cylinder switch and transmits to BCM as the LOCK or UNLOCK signal.
For vehicles equipped with LH anti-pinch system only, the door lock assembly LH (key cylinder switch) transmits the LOCK or UNLOCK signal directly to the BCM.
Component Function Check
1.CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
Check KEY CYL UN-SW, KEY CYL UN-SW in “DATA MONITOR” mode for “POWER DOOR LOCK SYSTEM” with CONSULT-III. Refer to DLK-276, "DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
Is the inspection result normal? YES >> Key cylinder switch is OK.
NO >> With LH and RH anti-pinch, refer to SEC-116, "Diagnosis Procedure (With LH and RH Anti- Pinch)".
NO >> With LH anti-pinch only, refer to SEC-117, "Diagnosis Procedure (With LH Anti-Pinch Only)".
Diagnosis Procedure (With LH and RH Anti-Pinch)
1.CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/ unlock switch connector and ground.
Is the inspection result normal? YES >> Replace main power window and door lock/unlock switch. Refer to PWC-91, "Removal and Installation".
NO >> GO TO 2
2.CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch connector and door lock assembly LH (key cylinder switch) connector.
3. Check continuity between main power window and door lock/ unlock switch connector and door lock assembly LH (key cylinder switch) connector.
4. Check continuity between main power window and door lock/ unlock switch connector and ground.
Is the inspection result normal? YES >> GO TO 3
NO >> Repair or replace harness.
3.CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT
Check continuity between door lock assembly LH connector and ground.
Is the inspection result normal? YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK DOOR KEY CYLINDER SWITCH
Check door key cylinder switch.
Refer to SEC-118, "Component Inspection".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
NO >> Replace door lock assembly LH (key cylinder switch). Refer to DLK-222, "FRONT DOOR LOCK : Removal and Installation".
Diagnosis Procedure (With LH Anti-Pinch Only)
1.CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between BCM connector and ground.
Is the inspection result normal? YES >> Replace main power window and door lock/unlock switch. Refer to PWC-91, "Removal and Installation".
NO >> GO TO 2
2.CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door lock assembly LH (key cylinder switch) connector.
3. Check continuity between door lock assembly LH (key cylinder switch) connector and ground.
Is the inspection result normal? YES >> GO TO 3
NO >> Repair or replace harness.
3.CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT
1. Disconnect BCM connector M18.
2. Check continuity between door lock assembly LH (key cylinder switch) connector D(10) terminals 5, 6 and BCM connector M18 (B) terminals 34, 56.
3. Check continuity between door lock assembly LH (key cylinder switch) connector D10 (A) terminals 5, 6 and ground.
Is the inspection result normal? YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK DOOR KEY CYLINDER SWITCH
Check door key cylinder switch.
Refer to SEC-118, "Component Inspection".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
NO >> Replace door lock assembly LH (key cylinder switch). Refer to DLK-222, "FRONT DOOR LOCK : Removal and Installation".
Component Inspection
1.CHECK DOOR KEY CYLINDER SWITCH
Check door lock assembly LH (key cylinder switch).
Is the inspection result normal? YES >> Key cylinder switch is OK.
NO >> Replace door lock assembly LH (key cylinder switch). Refer to DLK-222, "FRONT DOOR LOCK : Removal and Installation".
Key slot illumination
Description
Blinks when Intelligent Key insertion is required.
Component Function Check
Check key slot illumination (“KEY SLOT ILLUMI”) Active Test mode.
Is the inspection result normal? ...
Horn
Description
Horn (high/low) is located inside of front bumper and operates when theft
warning system is in alarm phase.
Component Function Check
1.CHECK FUNCTION
1. Select HORN in “ACTIVE TES ...
Other materials:
P0460 Fuel level sensor
Description
The fuel level sensor is mounted in the fuel level sensor unit.
The sensor detects a fuel level in the fuel tank and transmits a signal to the
combination meter. The combination
meter sends the fuel level sensor signal to the ECM via the CAN communication
line.
It consists of ...
Indicator lights
For additional information on warnings and indicators,
see “Vehicle information display” later in
this section.
Front fog light indicator light (if
so equipped)
The front fog light indicator light illuminates when
the front fog lights are ON. See “Fog light switch”
later in this sec ...
On-vehicle maintenance
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Work Flow
CUSTOMER INTERVIEW
Interview the customer, if possible, to determine the conditions that exist
when the noise occurs. Use the Diagnostic
Worksheet during the interview to document the facts and conditions when the
noise occurs and any
custome ...