Nissan Altima 2007-2012 Service Manual: The seat belt warning continues sounding, or does not sound

Description

• Seat belt warning does not sound even though driver seat belt is not fastened.

• Seat belt warning sounds even though driver seat belt is fastened.

Diagnosis Procedure

1. CHECK WARNING CHIME OPERATION

With the driver door open, turn lighting switch to 1st or 2nd position.

Does warning chime sound? YES >> GO TO 2

NO >> Replace combination meter. Refer to MWI-176, "Removal and Installation".

2. CHECK SEAT BELT WARNING LAMP

1. Turn ignition switch ON.

2. Check the operation of the seat belt warning lamp in the combination meter.

Is the inspection result normal? YES >> Replace BCM. Refer to BCS-96, "Removal and Installation".

NO >> GO TO 3

3. CHECK SEAT BELT BUCKLE SWITCH CIRCUIT

Perform inspection of the seat belt buckle switch circuit. Refer to WCS-20, "Diagnosis Procedure".

Is the inspection result normal? YES >> GO TO 4

NO >> Repair or replace harness.

4. CHECK SEAT BELT BUCKLE SWITCH UNIT

Perform a unit inspection for the seat belt buckle switch. Refer to WCS-21, "Component Inspection".

Is the inspection result normal? YES >> Replace the combination meter. Refer to MWI-176, "Removal and Installation".

NO >> Replace the seat belt buckle switch LH.

    The light reminder warning does not sound
    Description Light reminder warning does not sound even though headlamp is illuminated. Diagnosis Procedure 1. CHECK COMBINATION SWITCH (LIGHT SWITCH) OPERATION Check that the headlamps operate n ...

    Precaution
    Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used alon ...

    Other materials:

    B26e1 no reception of engine status signal
    Description BCM receives the engine status signal from ECM via CAN communication. DTC Logic DTC DETECTION LOGIC NOTE: • If DTC B26E1 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-433, "DTC Logic". • If DTC B26E1 is displayed w ...

    Manual operation
    Fan speed control Press the fan control buttons to manually control the fan speed. Press the AUTO button to return to automatic control of the fan speed. Air recirculation Press the air recirculation button to recirculate interior air inside the vehicle. The indicator light on the b ...

    P0340 CMP sensor (phase)
    Description The camshaft position sensor (PHASE) senses the retraction of camshaft (INT) to identify a particular cylinder. The camshaft position sensor (PHASE) senses the piston position. When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor (PHAS ...