Test NTC-11A - Checking Park/Neutral Switch
WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, 1995 Dodge Caravan, and 1995 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION
. For wiring diagrams, see WIRING DIAGRAMS
section at the end of this article.
- Using scan tool, read park/neutral switch input state. While watching scan tool display, move gear selector in and out of Park and Reverse positions. If display shows P/N and D/R, system is functioning properly. Test is complete. If display does not show P/N and D/R, go to next step.
- Turn ignition off. Place gear selector in Park position. Disconnect Powertrain Control Module (PCM) connector. Using scan tool in ohmmeter mode, check resistance of PCM connector terminal No. 30, park/neutral switch sense circuit (Black/Orange wire). Observe scan tool display while moving gear selector in and out of Park and Reverse positions.
- If display switches from less than 5 ohms to more than 5 ohms, replace PCM. Perform TEST VER-2. If display does not switch from less than 5 ohms to more than 5 ohms, check if display always stays less than 5 ohms. If display always stays less than 5 ohms, repair short to ground in Black/Orange wire. Perform TEST VER-2. If display does not always stay less than 5 ohms, go to next step.
- Disconnect park/neutral switch connector. Using an external ohm-meter, check resistance of sense circuit (Black/Orange wire) between park/neutral switch connector and PCM connector terminal No. 30. If resistance is less than 10 ohms, replace park/neutral switch. Perform TEST VER-2. If resistance is more than 10 ohms, repair open in Black/Orange wire. Perform TEST VER-2.