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Home >> Plymouth >> 1995 >> Acclaim 2.5 K >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.5L Flex Fuel >> Test NTC-12A >> Checking Pcm Ground & Power Circuits

Checking Pcm Ground & Power Circuits

NOTE: For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION. For wiring diagrams, see WIRING DIAGRAMS - 2.5L FLEXIBLE FUEL article.
  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Put scan tool in ohmmeter mode. Using scan tool, check resistance of PCM connector terminal No. 5 (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.
  2. Using scan tool, check resistance of PCM connector terminal No. 11 (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.
  3. Using scan tool, check resistance of PCM connector terminal No. 12 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.
  4. Put scan tool in voltmeter mode. Turn ignition on. Using scan tool, check voltage on PCM connector terminal No. 9 (Dark Blue wire). If voltage is less than 10 volts, repair open in Dark Blue 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.
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