Nissan Altima 2007-2012 Service Manual: Tachometer

 System Diagram

System Description

The tachometer indicates engine speed in revolutions per minute (rpm).

The ECM provides an engine speed signal to the combination meter via CAN communication lines.

Component Parts Location

1. Combination meter M24

2. IPDM E/R E17, E18, E201, F10

3. ECM E10

4. TCM F16

5. BCM M17, M18, M19, M21 (view with instrument panel removed)

6. ABS actuator and electric unit (control unit) E26

7. Fuel level sensor unit and fuel pump (fuel level sensor) B42 (view with rear seat and inspection hole cover removed)

8. Ambient sensor E211 (view of front bumper fascia)

9. Oil pressure switch F41 (QR25DE) (view with engine removed)

10. Oil pressure switch F41 (VQ35DE) (view with engine removed)

11. Parking brake switch M73 (Sedan with M/T and Coupe) (view with center console removed)

12. Parking brake switch E35 (Sedan with CVT) (view with instrument lower cover LH removed)

Component Description

    Speedometer
    System Diagram System Description The ABS actuator and electric unit (control unit) provides a vehicle speed signal to the combination meter via CAN communication lines. Component Parts Locat ...

    Engine coolant temperature gauge
    System Diagram System Description The engine coolant temperature gauge indicates the engine coolant temperature. The ECM provides an engine coolant temperature signal to the combination mete ...

    Other materials:

    Heated seats (if so equipped)
    The front seats are warmed by built-in heaters. 1. Start the engine. 2. Push the LO or HI position of the switch, as desired. The indicator light in the switch will illuminate. The heater is controlled by a thermostat, automatically turning the heater on and off. The indicator light w ...

    P0138 HO2S2
    Description The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the air fuel ratio (A/F) sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from t ...

    Daytime running light system
    System Diagram System Description The headlamp system for Canada vehicles is equipped with a daytime light control unit that activates the high beam headlamps at approximately half illumination whenever the engine is running. If the parking brake is applied before the engine is started the ...