Nissan Altima 2007-2012 Service Manual: ASCD Indicator

Description

The ASCD operation status is indicated by two indicators, (CRUISE and SET on the information display) on the combination meter.

CRUISE indicator is displayed to indicate that ASCD system is ready for operation when MAIN switch on ASCD steering switch is turned ON.

SET indicator is displayed when the following conditions are met.

• CRUISE indicator is displayed.

• SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of ASCD setting.

SET indicator is displayed during ASCD control.

Refer to EC-67, "System Description" for the ASCD function.

Component Function Check

1.ASCD INDICATOR FUNCTION

Check ASCD indicator under the following conditions.

Is the inspection result normal? YES >> INSPECTION END

NO >> Go to EC-1472, "Diagnosis Procedure".

Diagnosis Procedure

1.CHECK DTC

Check that DTC UXXXX is not displayed.

Is the inspection result normal? YES >> GO TO 2.

NO >> Perform trouble diagnosis for DTC UXXXX.

2.CHECK COMBINATION METER OPERATION

Refer to MWI-38, "CONSULT-III Function (METER/M&A)".

Is the inspection result normal? YES >> GO TO 3.

NO >> Check combination meter circuit. Refer to EC-1179, "Diagnosis Procedure".

3.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> INSPECTION END

    ASCD Brake switch
    Description When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON. ECM detects the state of the brake pedal by those two types of input (ON/OFF s ...

    Cooling fan
    Description The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant pressure, and air conditioner ON signal. The control system has 4-step cont ...

    Other materials:

    On board refueling vapor recovery (ORVR)
    Description From the beginning of refueling, the air and vapor inside the fuel tank go through refueling EVAP vapor cut valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is released to the atmosphere. When the refueling has reached the ...

    AV control unit
    Diagnosis Procedure 1.CHECK FUSE Check that the following fuses of the AV control unit are not blown. Are the fuses OK? YES >> GO TO 2 NO >> Be sure to eliminate cause of malfunction before installing new fuse. 2.CHECK POWER SUPPLY CIRCUIT Check voltage between AV control unit h ...

    B2609 steering status
    Description There are 2 switches in the electronic steering column lock (steering lock/unlock switch 1 and 2). BCM compares those two switches conditions to judge the present steering status. DTC Logic DTC DETECTION LOGIC NOTE: • If DTC B2609 is displayed with DTC U1000, first perform the ...