Nissan Altima 2007-2012 Service Manual: Shift lock system

Description

The selector lever cannot be shifted from “P” position to any other position unless the ignition switch is in the ON position and the brake pedal is depressed.

Wiring Diagram - CVT SHIFT LOCK SYSTEM - Coupe

Wiring Diagram - CVT SHIFT LOCK SYSTEM - Sedan

Diagnosis Procedure

1. CHECK POWER SOURCE

1. Disconnect CVT device connector.

2. Turn ignition switch ON.

3. Check voltage between CVT device connector M23 terminal 6 and ground.

Is the inspection result normal? YES >> GO TO 5.

NO >> GO TO 2.

2. CHECK POWER SOURCE AT STOP LAMP SWITCH

1. Turn ignition switch OFF.

2. Disconnect stop lamp switch connector.

3. Turn ignition switch ON.

4. Check voltage between stop lamp switch connector E38 terminal 3 and ground.

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

NO >> Check the following: • Harness for short or open between fuse block (J/B) and stop lamp switch

• 10A fuse [No. 3, located in fuse block (J/B)]

3. CHECK STOP LAMP SWITCH

1. Turn ignition switch OFF.

2. Check continuity between stop lamp switch terminals 3 and 4.

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

NO >> Replace stop lamp switch. Refer to BR-17, "Exploded View".

4. CHECK HARNESS BETWEEN STOP LAMP SWITCH AND CVT DEVICE FOR OPEN

Check continuity between stop lamp switch connector E38 (A) terminal 4 and CVT device connector M23 (B) terminal 6.

Is the inspection result normal? YES >> GO TO 5.

NO >> Repair harness or connectors.

5. CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between CVT device connector M23 terminal 7 and ground.

Is the inspection result normal? YES >> Replace CVT device. Refer to TM-255, "Removal and Installation".

NO >> Repair harness or connectors.

    P1778 step motor - function
    Description • The step motor's 4 aspects of ON/OFF change according to the signal from TCM. As a result, the flow of line pressure to primary pulley is changed and pulley ratio is controlled. ...

    Ecu diagnosis
    TCM Reference Value VALUES ON THE DIAGNOSIS TOOL * Means CVT fluid temperature. Actual oil temperature °C (°F) cannot be checked unless a numeric value is converted. Refer to TM-237, &q ...

    Other materials:

    Passenger side
    Description Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM transmit and receive the signal by power window serial link. The signal mentioned below is transmitted from BCM to main power window and door lock/unlock switch and power window a ...

    B2556 push-button ignition switch
    Description The switch that changes the power supply position. BCM maintains the power supply position status. BCM changes the power supply position with the operation of the push-button ignition switch. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.PERFORM DTC CONFIRMATION ...

    Front power window switch
    Description • BCM supplies power. • Front power window motor RH will be operated if power window and door lock/unlock switch RH is operated.  Component Function Check Power Window And Door Lock/unlock Switch RH 1. CHECK FRONT POWER WINDOW MOTOR RH FUNCTION Does front power window ...