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

NOTE: After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST  under SELF-DIAGNOSTIC SYSTEM.
  1. Turn ignition switch to LOCK position. Disconnect PCM harness connector C191. Inspect connector for loose, damaged or corroded terminals. Pay particular attention to terminals No. 16 (Tan/Orange wire) and No. 15 (Pink/Light Blue wire). If connector is okay, go to next step. If problem exists, repair connector as necessary.
  2. Disconnect in-line harness connector C221. See Figure . Inspect connector for loose, damaged or corroded terminals. If connector is okay, go to next step. If problem exists, repair connector as necessary.
  3. Measure resistance in Tan/Orange wire between terminal No. 22 at female half of in-line harness connector C221 and terminal No. 2 at DLC. See Figure and Figure . Also, measure resistance in Pink/Light Blue wire between terminal No. 24 at female half of in-line harness connector C221 and terminal No. 10 at DLC. If both resistance readings are 5 ohms or less, go to next step. If any resistance reading is greater than 5 ohms, repair open in Tan/Orange wire and/or Pink/Light Blue wire between female half of in-line harness connector C221 and DLC.
  4. Disconnect in-line harness connector C130. Inspect connector for loose, damaged or corroded terminals. If connector is okay, go to next step. If problem exists, repair connector as necessary.
  5. Measure resistance in Tan/Orange wire between terminal No. 22 at male half of in-line harness connector C221 and terminal No. 5 at male half of in-line harness connector C130. See Figure . Also, measure resistance in Pink/Light Blue wire between terminal No. 24 at male half of in-line harness connector C221 and terminal No. 6 at male half of in-line harness connector C130. If both resistance readings are 5 ohms or less, go to next step. If any resistance reading is greater than 5 ohms, repair open in Tan/Orange wire and/or Pink/Light Blue wire between male half of in-line harness connector C221 and male half of in-line harness connector C130.
  6. Measure resistance in Tan/Orange wire between terminal No. 5 at female half of in-line harness connector C130 and terminal No. 16 at PCM harness connector C191. See Figure and Figure . Also, measure resistance in Pink/Light Blue wire between terminal No. 6 at female half of in-line harness connector C130 and terminal No. 15 at PCM connector harness connector C191. If both resistance readings are 5 ohms or less, replace PCM. If any resistance reading is greater than 5 ohms, repair open in Tan/Orange wire and/or Pink/Light Blue wire between female half of in-line harness connector C130 and PCM.
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