Nissan Altima 2007-2012 Service Manual: Seat belt warning chime
System Diagram
System Description
DESCRIPTION
With ignition switch turned ON and driver seat belt unfastened, seat belt warning chime will sound for approximately 6 seconds.
• BCM receives seat belt buckle switch signal from combination meter with CAN communication line.
• BCM detects ignition switch turned ON and seat belt buckle switch LH ON. And then transmits buzzer output signal (seat belt warning chime) to combination meter with CAN communication line.
• When combination meter receives buzzer output signal (seat belt warning chime), it sounds the buzzer.
WARNING OPERATION CONDITIONS
If all of the following conditions are fulfilled
• Ignition switch OFF→ON
• Seat buckle switch LH is ON (driver seat belt not fastened)
WARNING CANCEL CONDITIONS
Cancels the warning if any of the following conditions is fulfilled.
• Ignition switch OFF
• Seat buckle switch LH is OFF (driver seat belt fastened)
• 90 seconds have passed since the start of the warning
Component Parts Location
1. Combination meter M24
2. Combination switch (lighting switch) M28
3. Seat belt buckle switch LH B202
4. Door switch LH B8
5. BCM M16, M17, M18, M19 (view with instrument panel removed)
6. ABS actuator and electric unit (control unit) E26
7. Parking brake switch M73 (sedan with M/T or coupe) (view with center console removed)
8. Parking brake switch E35 (sedan with CVT) [view with instrument panel lower cover (LH) removed]
Component Description
Light reminder warning chime
System Diagram System Description DESCRIPTION With ignition switch in OFF or ACC position, driver door open, and lighting switch in 1ST or 2ND position, the light warning chime will sound. ...Parking brake release warning chime
System Diagram System Description DESCRIPTION • The combination meter receives the vehicle speed signal from the ABS actuator and electric unit (control unit) via CAN communication l ...Other materials:
Fuel pump
Description
*: ECM determines the start signal status by the signals of engine speed and
battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is
turned ON to improve engine
start ability. If the ECM receives a engine speed signal from the camshaft ...
Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1. GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurred).
>> GO TO 2
2. CHECK DTC
1. Check DT ...
P0037, P0038 HO2S2 heater
Description
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater
corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Con ...