DTC P1715 Park/Neutral Position Switch Circuit. Geo Tracker - 2WD 1996

For 1990-2009 cars

### Circuit Description

The Engine Control Module (ECM) determines whether the vehicle is in the Park or the Neutral gear position through the Park/Neutral Position (PNP) switch. While cranking, the switch allows B+ to reach the ECM connector C2 terminal 22 (BLK/RED) with the selector in the Park or the Neutral position.

### Conditions for Setting the DTC

• | Engine speed changed from below 300 RPM to over 500 RPM when the vehicle speed is 0 km/h (0 mph) and the Park/Neutral Position (PNP) switch indicates an open or a low voltage to the PCM (R, D, 2 or L gear positions).

• | The PNP switch closed (P or N gear position) is detected for 10 seconds while the engine is running at over 2500 RPM and with more than 38.5% calculated load value.

### Action Taken When the DTC Sets

The Malfunction Indicator Lamp (MIL) will illuminate with the fault active.

### Conditions for Clearing the DTC

• | The MIL will turn OFF after 3 consecutive drive cycles without a fault present.

• | DTC will clear after 40 consecutive warm-up cycles without a fault.

• | DTC can be cleared by using a scan tool or by disconnecting the ECM battery feed.

### Diagnostic Aids

Inspect the following components:

• | The Park/Neutral Position (PNP) switch for proper operation

• | Poor connection at the PCM connector C2, the PNP switch connector, and at connector C101. Inspect the harness connectors for the following conditions:

- | Backed out terminals

- | Improper mating

- | Broken locks

- | Improperly formed or damaged terminals

- | Poor terminal-to-wire connection

• | A damaged harness

• | If you cannot duplicate DTC P1715, use the information included in the Freeze Frame data in determining the vehicle operating conditions since the DTC was last set. This may assist in determining how often the DTC sets.

### DTC Confirmation Procedure

1. Turn the ignition switch to LOCK.
2. Connect the scan tool to the Data Link Connector (DLC).
3. Start engine and warm the engine up to normal operating temperature.
4. Use a scan tool to clear the following items from the PCM memory:

• | The DTC

• | The pending DTC

• | Freeze frame data

5. Drive the vehicle to 43 km/h (27 mph) in Drive range for 10 seconds.
6. Accelerate the vehicle to 85 km/h (53 mph) in Drive range for 10 seconds.
7. Stop the vehicle.
8. Use the scan tool to inspect for DTC P1715

### Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

1. The On-Board Diagnostic (OBD) System Check prompts the technician to complete some basic checks and store the freeze frame data on the scan tool if applicable. This creates an electronic copy of the data taken when the fault occurred. The information is then stored in the scan tool for later reference.

2. This step checks the operation of the Park/Neutral Position (PNP) switch.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the On-Board Diagnostic (OBD) System Check performed? | -- | Go to Step 2 | Go to On Board Diagnostic (OBD) System Check in Engine Controls - 1.6L

2

1. Place the transmission in Park.
2. Turn the ignition switch to Start.

Does the engine start?

--

Go to Step 3

Go to Starting System Check in Engine Electrical

3

1. Disconnect ECM connector C2.
2. While cranking the engine, probe ECM connector C2, terminal 22 (BLK/RED) with a test light connected to ground.

Does the test light illuminate?

--

Go to Step 5

Go to Step 4

4 | Repair the open between S223 and ECM connector C2, terminal 22. Is the action complete? | -- | Go to Step 6 | --

5

• | Test for a short to voltage on the BLK/YEL wire between S223 and ECM connector C2, terminal 22.

• | Repair as necessary.

Is the action complete?

--

Go to Step 6

--

6

• | After repair, use the scan tool in order to clear the info function. Road test the vehicle within Freeze Frame conditions that set the DTC.

• | Test for DTCs.

• | Review the scan tool data and if no DTCs are stored, the repair is complete.

Did any DTCs display on the scan tool?

--

Go to Applicable DTC Table

System OK