AUTOMATIC TRANSMISSION SYSTEM Park / Neutral Position Switch Circuit

DESCRIPTION

The Park/Neutral Position (PNP) switch detects the shift lever position and sends signals to the TCM.

WIRING DIAGRAM

A01E1O3E03

INSPECTION PROCEDURE

Tech Tips

Using the intelligent tester's Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save time.


  1. Warm up the engine.

  2. Turn the ignition switch OFF.

  3. Connect the intelligent tester to the DLC3.

  4. Turn the ignition switch ON and push the tester main switch ON.

  5. Enter the following menus: Powertrain / ECT / Data List.

  6. Follow the instructions on the tester and read the Data List.

Item

Measurement Item/

Range (Display)

 Normal Condition Diagnostic Note
Neutral Position SW Signal

PNP switch status/

ON or OFF

Shift lever is:

On P or N: ON

Not on P or N: OFF

 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
Shift SW Status (R Range)

PNP switch status/

ON or OFF

Shift lever is:

On R: ON

Not on R: OFF

 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
Shift SW Status (D or 3 Range)

PNP switch status/

ON or OFF

Shift lever is:

On D or 3: ON

Not on D or 3: OFF

 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
Shift SW Status (2 Range)

PNP switch status/

ON or OFF

Shift lever is:

On 2: ON

Not on 2: OFF

 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect
Shift SW status (L Range)

PNP switch status/

ON or OFF

Shift lever is:

On L: ON

Not on L: OFF

 When shift lever position displayed on intelligent tester differs from actual position, adjustment of PNP switch or shift cable may be incorrect

CAUTION:

In the table above, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Tech Tips

When the malfunction is found when the shift lever is on 3, start from *1. When the malfunction is found when the shift lever is not on 3, start from *2.

PROCEDURE


  1. INSPECT PARK/NEUTRAL POSITION SWITCH*1


    1. A01DV2WE06

      Disconnect the N1 park/neutral position switch connector.

    2. Measure the resistance of the park/neutral position switch when the shift lever is moved to each position.

      Standard resistance
      Tester Connection Shift Lever Position Specified Condition
      4 (B) - 5 (L) P or N Below 1 Ω
      4 (B) - 5 (L) Not on P or N 10 kΩ or higher
      1 (RL) - 2 (RB) R Below 1 Ω
      1 (RL) - 2 (RB) Not on R 10 kΩ or higher
      2 (RB) - 7 (DL) D Below 1 Ω
      2 (RB) - 7 (DL) Not on D 10 kΩ or higher
      2 (RB) - 3 (2L) 2 Below 1 Ω
      2 (RB) - 3 (2L) Not on 2 10 kΩ or higher
      2 (RB) - 8 (LL) L Below 1 Ω
      2 (RB) - 8 (LL) Not on L 10 kΩ or higher

    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH

    OK

  2. INSPECT SHIFT LOCK CONTROL ECU*2


    1. A01DWBLE07

      Disconnect the S43 ECU connector.

    2. Measure the resistance of the ECU when the shift lever is moved to each position.

      Standard resistance
      Tester Connection Shift Lever Position Specified Condition
      9 (NSSD) - 3 (AT3) D 10 kΩor higher
      9 (NSSD) - 3 (AT3) 3 Below 1 Ω

    NG

    REPLACE SHIFT LOCK CONTROL ECU

    OK

  3. CHECK WIRE HARNESS (TCM - BATTERY)


    1. A01DYIIE10

      Turn the ignition switch ON.

    2. Measure the voltage of the wire harness side connectors.

      Standard voltage
      Tester Connection Shift Lever Position Specified Condition
      T37-9 (R) - Body ground R 10 to 14 V*
      T37-9 (R) - Body ground Not on R Below 1 V
      T37-8 (D) - Body ground D or 3 10 to 14 V
      T37-8 (D) - Body ground Not on D or 3 Below 1 V
      T37-12 (3) - Body ground 3 10 to 14 V
      T37-12 (3) - Body ground Not on 3 Below 1 V
      T37-11 (2) - Body ground 2 10 to 14 V
      T37-11 (2) - Body ground Not on 2 Below 1 V
      T37-10 (L) - Body ground L 10 to 14 V
      T37-10 (L) - Body ground Not on L Below 1 V

      Tech Tips

      *: The voltage will drop slightly due to the illumination of the back-up light.


    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE