Test NTC-12A - Checking Pcm Power & Ground Circuits
WARNING: This page is about a different car, the 1995 Dodge Pickup and 1995 Dodge Cab & Chassis. 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. 11, ground circuit (Black/Tan wire). If resistance is more than 5 ohms, repair open 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, ground circuit (Black/Tan wire). If resistance is more than 5 ohms, repair open Black/Tan wire. Perform TEST VER-2. If resistance is less than 5 ohms, go to next step.
- Turn ignition on. Using scan tool in voltmeter mode, check voltage on PCM connector terminal No. 9, fused ignition switch output circuit (Light Green/Black wire). If voltage is less than 10 volts, repair open Light Green/Black wire. Perform TEST VER-2. If voltage is more than 10 volts, turn ignition off. Reconnect PCM. PCM ground and power circuits are operating properly. Test is complete.