MULTI-MODE MANUAL TRANSAXLE SYSTEM Park / Neutral Position Switch Circuit

DESCRIPTION

The park/neutral position switch detects the transmission gear Neutral position and sends a signal to the transmission control ECU. Based on the signal, the ECU detects the Neutral gear position. The engine starts when the ignition switch is turned to the ST position with the brake pedal depressed and the transmission gear in neutral.

WIRING DIAGRAM

A01388KE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    A01368ZE01

    1. Remove the park/neutral position switch assembly.

    2. Measure the park/neutral position switch assembly resistance.

      Standard Resistance
      Switch Conditions Tester Connections Specified Conditions
      Free 1 - 2 10 kΩ or higher
      Pushed 1 - 2 Below 1 Ω

    3. Reinstall the park/neutral position switch assembly.


    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    OK

  2. INSPECT TRANSMISSION CONTROL ECU ASSEMBLY

    A0136IKE03

    1. Disconnect the transmission control ECU connector.

    2. Turn the ignition switch to ON.

    3. Confirm that the shift lever is in the N position.

    4. Measure the voltage between the terminal of transmission control ECU and the body ground when the ignition switch is turned to the ST position.

      Standard Voltage
      Tester Connections Shift Lever Position Specified Conditions
      TMN (A28-3) - Body ground N 10 to 14 V

    5. Turn the ignition switch to OFF and reconnect the transmission control ECU connector.

    6. Turn the ignition switch to ON.

    7. Change the shift lever position to any position other than the N position while depressing the brake pedal.

    8. Turn the ignition switch to OFF and disconnect the transmission control ECU connector.

    9. Turn the ignition switch to ON.

    10. Measure the voltage between the terminal of transmission control ECU and the body ground when the ignition switch is turned to the ST position.

      Standard Voltage
      Tester Connections Shift Lever Position Specified Conditions
      TMN (A28-3) - Body ground Other than N Below 1 V

    11. Reconnect the transmission control ECU connector.


    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE

    NG

  3. INSPECT IGNITION SWITCH ASSEMBLY

    A01392DE03

    1. Disconnect the ignition switch connector.

    2. Check the ignition switch resistance.

      Standard Resistance
      Switch Conditions Tester Connections Specified Conditions
      Lock

      2 (AM1) - 1 (IG1)

      2 (AM1) - 3 (ST1)

      		 10 kΩ or higher
      ON 2 (AM1) - 1 (IG1) Below 1 Ω
      ON 2 (AM1) - 3 (ST1) 10 kΩ or higher
      ST 2 (AM1) - 1 (IG1) Below 1 Ω
      ST 2 (AM1) - 3 (ST1) Below 1 Ω

    3. Reconnect the ignition switch connector.


    NG

    REPLACE IGNITION SWITCH ASSEMBLY

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR