Test NTC-12A - Checking Pcm Grounds & Power Circuits
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.
- Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using scan tool in ohmmeter mode, check resistance of PCM connector terminal No. 5, signal ground circuit (Black/White wire). If resistance is more than 5 ohms, repair open in Black/White wire. Perform TEST VER-2. If resistance is less than 5 ohms, go to next step.
- Using scan tool, check resistance of PCM connector terminal No. 11, power ground circuit (Black/Tan wire). If resistance is more than 5 ohms, repair open in Black/Tan wire. Perform TEST VER-2. If resistance is less than 5 ohms, go to next step.
- Using scan tool, check resistance of PCM connector terminal No. 12, power ground circuit (Black/Tan wire). If resistance is more than 5 ohms, repair open in Black/Tan wire. Perform TEST VER-2. If resistance is less than 5 ohms, go to next step.
- Put scan tool in voltmeter mode. Turn ignition on. Using scan tool, check voltage on PCM connector terminal No. 9, ignition 12-volt feed circuit (Dark Blue/White wire). If voltage is less than 10 volts, repair open in Dark Blue/White wire. Perform TEST VER-2. If voltage is more than 10 volts, turn ignition off. Reconnect PCM connector. PCM grounds and power circuits are okay. Test is complete.