GSIC - Global Service Information Center

### ELECTRONIC CONTROLLED AUTOMATIC TRANSMISSION SYSTEM > Park / Neutral Position Switch Circuit

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## DESCRIPTION

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

## WIRING DIAGRAM

## INSPECTION PROCEDURE

HINT:

  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 / Engine and 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

HINT:

  When failure still occurs even after adjusting these parts

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

HINT:

  When failure still occurs even after adjusting these parts

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

HINT:

  When failure still occurs even after adjusting these parts

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

HINT:

  When failure still occurs even after adjusting these parts

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

HINT:

  When failure still occurs even after adjusting these parts

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.

HINT:

  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.

1.INSPECT PARK/NEUTRAL POSITION SWITCH *1

1. Disconnect the N1 PNP switch connector.

1. Measure the resistance of the PNP 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. Disconnect the S11 ECU connector.

1. 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 (AT4) | D | 10 kΩor higher
     9 (NSSD) - 3 (AT4) | 3 | Below 1 Ω

| NG |

REPLACE SHIFT LOCK CONTROL ECU

OK |

3.CHECK WIRE HARNESS (TCM - BATTERY)

1. Turn the ignition switch ON.

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

   Standard voltage:

     Tester Connection | Shift Lever Position | Specified Condition
     T18-9 (R) - Body ground | R | 10 to 14 V*
     T18-9 (R) - Body ground | Not on R | Below 1 V
     T18-8 (D) - Body ground | D or 3 | 10 to 14 V
     T18-8 (D) - Body ground | Not on D or 3 | Below 1 V
     T18-12 (3) - Body ground | 3 | 10 to 14 V
     T18-12 (3) - Body ground | Not on 3 | Below 1 V
     T18-11 (2) - Body ground | 2 | 10 to 14 V
     T18-11 (2) - Body ground | Not on 2 | Below 1 V
     T18-10 (L) - Body ground | L | 10 to 14 V
     T18-10 (L) - Body ground | Not on L | Below 1 V

   HINT:
     *: 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