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Test NS-6A - Correcting No Response Condition

WARNING: This page is about a different car, the 1995 Jeep Wrangler, 1995 Jeep Grand Cherokee, and 1995 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For wiring diagrams, see WIRING DIAGRAMS  at the end of this article.
  1. If vehicle starts, go to TEST NS-6B. If vehicle does not start, turn ignition off. Disconnect Throttle Position Sensor (TPS) connector. Turn ignition on.
  2. Using DRB in voltmeter mode, check voltage on TPS connector, 5-volt supply circuit (Violet/White wire). If voltage is greater than 6 volts, repair open ground circuits at Powertrain Control Module (PCM) connector terminals No. 5 (Black/Tan wire), No. 11 and No. 12 (Black/Tan). Perform TEST VER-1  . If voltage is less than 6 volts, go to next step.
  3. If voltage is less than 4.4 volts, go to step 5). If voltage is greater than 4.4 volts, reconnect TPS connector. Disconnect Manifold Absolute Pressure (MAP) sensor connector.
  4. Using DRB, check voltage on MAP sensor connector, 5-volt supply circuit (Violet/White wire). If voltage is greater than 4.4 volts, go to TEST NS-6B in the appropriate TESTS W/CODES article. See the G - TESTS W/CODES ARTICLE MENU & LINKS  table. If voltage is less than 4.4 volts, replace TPS. Perform TEST VER-1  .
  5. Disconnect MAP sensor electrical connector. Using DRB, check voltage on TPS connector, 5-volt supply circuit (Violet/White wire). If voltage is greater than 4.4 volts, replace MAP sensor. Perform TEST VER-1  .
  6. If voltage is less than 4.4 volts, turn ignition off. Disconnect PCM connector. Using DRB in ohmmeter mode, check resistance of PCM connector terminal No. 6, 5-volt supply circuit (Violet/White wire).
  7. If resistance is less than 5 ohms, repair short to ground in Violet/White wire. Perform TEST VER-1  . If resistance is greater than 5 ohms, turn ignition on. Using DRB in voltmeter mode, check voltage on PCM connector terminal No. 9, ignition 12-volt feed circuit (Light Blue/Red wire).
  8. If voltage is greater than 10 volts, go to next step. If voltage is less than 10 volts, repair open in Light Blue/Red wire between PCM connector and ignition switch. Perform TEST VER-1  .
  9. Using DRB, check voltage on PCM connector terminal No. 3, battery voltage circuit (Red Wire). If voltage is less than 10 volts, go to next step. If voltage is greater than 10 volts, replace PCM. Perform TEST VER-1  .
  10. Remove engine control fuse from Power Distribution Center (PDC). Inspect fuse. If fuse is okay, go to next step. If fuse is blown, go to step 12). Using DRB in voltmeter mode, check voltage on battery voltage side of PDC engine control fuse socket.
  11. If voltage is greater than 10 volts, repair open in Red wire between PDC engine control fuse socket and PCM connector terminal No. 3. Perform TEST VER-1  . If voltage is less than 10 volts, repair open in battery voltage side of PDC engine control fuse socket. Perform TEST VER-1  .
  12. Turn ignition off. Disconnect Auto Shutdown (ASD) and fuel pump relays. Using DRB in ohmmeter mode, check resistance of PCM connector terminal No. 3, fused battery voltage circuit (Red wire). If resistance is less than 5 ohms, repair short to ground in Red wire. Perform TEST VER-1  .
  13. If resistance is greater than 5 ohms, check resistance of ASD relay connector, output circuit (Dark Green/Orange wire). If resistance is less than 5 ohms, go to next step. If greater than 5 ohms, perform TEST NS-6C. See appropriate TESTS W/CODES article as listed in the G - TESTS W/CODES ARTICLE MENU & LINKS  table.
  14. Disconnect ignition coil connector. Using DRB, check resistance of ASD relay connector, output circuit (Dark Green/Orange wire). If resistance is greater than 5 ohms, replace ignition coil. Perform TEST VER-1  .
  15. If resistance is less than 5 ohms, disconnect generator field connector. Using DRB, check resistance of ASD relay connector, output circuit (Dark Green/Orange wire). If resistance is greater than 5 ohms, repair short to ground in generator. Perform TEST VER-1  .
  16. If resistance is less than 5 ohms, disconnect No. 1 fuel injector harness connector. Using DRB, check resistance of ASD relay connector, output circuit (Dark Green/Orange wire). If resistance is greater than 5 ohms, replace No. 1 fuel injector. Perform TEST VER-1  .
  17. If resistance is less than 5 ohms, perform previous step for each additional fuel injector in order. After all injectors have been tested, if resistance is less than 5 ohms, repair short to ground in Dark Green/Orange wire. Perform TEST VER-1  .
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