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Test C: Powertrain Control Module (Pcm) Does Not Respond To NGS

NOTE: Circuit No. 914 (White/Blue wire) and circuit No. 915 (Black/Blue wire) are a twisted pair and cannot be repaired. They must be replaced as an assembly.
  1. Connect New Generation Star (NGS) scan tester to Data Link Connector (DLC) and perform proper hook-up procedure. See EQUIPMENT HOOK-UP  . Retrieve continuous DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES under COMMUNICATION NETWORK DIAGNOSTICS  . If DTC 0001 is retrieved for circuit No. 914 (White/Blue wire), go to next step. If DTC 0001 is not retrieved for circuit No. 914 (White/Blue wire), go to step 4).
  2. Turn ignition off. Disconnect PCM 104-pin connector C212 (located under center console). Inspect PCM 104-pin connector for damage. Inspect DLC for damage. If both connectors are okay, go to next step. If connector(s) are damaged, repair as necessary.
  3. Connect EEC-V 104-Pin Breakout Box (014-00950) to PCM 104-pin connector C212. Measure resistance between breakout box pin No. 16 and DLC pin No. 2 (White/Blue wire). Measure resistance between breakout box pin No. 16 and ground. If resistance is less than 5 ohms between breakout box and DLC, and greater than 10 k/ohms between breakout box and ground, go to next step. If resistance(s) are not as specified, replace harness assembly as necessary.
  4. Turn ignition off. Disconnect PCM 104-pin connector C212 (located under center console). Inspect PCM 104-pin connector for damage. Inspect Data Link Connector (DLC) for damage. If both connectors are okay, go to next step. If connector(s) are damaged, repair as necessary.
  5. Connect EEC-V 104-Pin Breakout Box (014-00950) to PCM 104-pin connector C212. Measure resistance between breakout box pin No. 15 and DLC pin No. 10 (Black/Blue wire). Measure resistance between breakout box pin No. 15 and ground. If resistance is less than 5 ohms between breakout box and DLC, and greater than 10 k/ohms between breakout box and ground, go to next step. If resistance(s) are not as specified, replace harness assembly as necessary.
  6. Measure resistance between breakout box pin No. 13 and DLC pin No. 13 (Pink/Green wire). Measure resistance between breakout box pin No. 13 and ground. If resistance is less than 5 ohms between breakout box and DLC, and greater than 10 k/ohms between breakout box and ground, replace PCM. If resistance(s) are not as specified, repair Pink/Green wire.
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