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Test NS-6A - Repairing No Response Condition

NOTE: Perform TEST DTC before proceeding.
  1. If vehicle starts, go to TEST NS-6B. If vehicle does not start, disconnect Throttle Position (TP) sensor connector. Turn ignition on. Using scan tool in voltmeter mode, check voltage on TP sensor 5-volt supply circuit. See TP SENSOR CONNECTOR WIRE  IDENTIFICATION table. If voltage is 6 volts or less, go to next step. If voltage is more than 6 volts, repair open grounds at Powertrain Control Module (PCM) connector terminals No. 10, 47 or 50. Perform TEST VER-1A.
  2. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Turn ignition on. Using scan tool in voltmeter mode, check voltage of fused ignition switch output circuit at PCM connector terminal No. 20. See PCM TERMINALS 10, 47, 50, 46 & 20 CONNECTOR WIRE  ID table. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open fused ignition switch output circuit between PCM connector and ignition switch (also check fuse). Perform TEST VER-1A.
  3. Using scan tool in voltmeter mode, check voltage of fused B+ circuit at Powertrain Control Module (PCM) connector terminal No. 46. See PCM TERMINALS 10, 47, 50, 46 & 20 CONNECTOR WIRE  ID table. If voltage is more than 10 volts, go to TEST NS-6B. If voltage is 10 volts or less, go to next step.
  4. Remove PCM B+ fuse from Power Distribution Center (PDC) in engine compartment. Inspect fuse. If fuse is okay, go to next step. If fuse is not okay, go to step 6).
  5. Using scan tool in voltmeter mode, check voltage battery voltage side of fuse socket. If voltage is more than 10 volts, repair open between fuse and PCM connector terminal No. 46. Perform TEST VER-1A. If voltage is 10 volts or less, repair open between battery voltage side of fuse socket and battery. Perform TEST VER-1A.
  6. Turn ignition off. Disconnect Auto Shutdown (ASD) relay. ASD relay is located in Power Distribution Center (PDC) in engine compartment.
  7. Disconnect fuel pump relay. Fuel pump relay is located in PDC. Go to next step.
  8. Using scan tool in ohmmeter mode, check resistance of fused B+ circuit at PCM connector terminal No. 46. See PCM TERMINALS 10, 47, 50, 46 & 20 CONNECTOR WIRE  ID table. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on fused B+ circuit. Replace PCM B+ fuse. Perform TEST VER-1A.
  9. Disconnect all O2S connectors. Using scan tool in ohmmeter mode, check resistance of ASD relay output circuit at O2S connector (harness side). See UPSTREAM O2S CONNECTOR WIRE ID  (HARNESS SIDE) table. If resistance less than 5 ohms for any O2 sensor, replace O2 sensor with low resistance. Perform TEST VER-1A. If resistance is 5 ohms or more, go to next step.
  10. Remove ASD relay. ASD relay is located in Power Distribution Center (PDC) in engine compartment. Go to next step.
  11. Using scan tool in ohmmeter mode, check resistance of ASD relay output circuit at ASD relay connector. See Figure for wire identification. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, go to step 14).
  12. Disconnect the fuel pump harness connector. See FUEL PUMP CONNECTOR LOCATION  table. Remove fuel pump relay. For fuel pump relay location, See Figure. Using scan tool in ohmmeter mode, check resistance of fuel pump relay output circuit at the fuel pump relay connector (harness side). See Figure. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on fuel pump relay output circuit. Replace fuse. Perform TEST VER-1A.
  13. Inspect fuel pump relay output circuit for a possible short to ground. If an intermittent short to ground is present, repair as necessary. Replace fuse. Perform TEST VER-1A. If an intermittent short to ground is not present, replace fuel pump. Replace fuse. Perform TEST VER-1A.
    NOTE: Ensure all O2 sensor connectors remain disconnected for remainder of test procedure.
  14. Disconnect ignition coil connector. Using scan tool in ohmmeter mode, check resistance of ASD relay output circuit (Dark Green/Orange wire) at ignition coil connector (harness side). If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, replace ignition coil. Replace fuse. Perform TEST VER-1A.
  15. Disconnect generator field connector. Using scan tool in ohmmeter mode, check resistance of ASD relay output circuit Dark Green/Orange wire at generator field connector. If resistance 5 ohms or less, go to next step. If resistance more than 5 ohms, repair generator for a short to ground. Replace fuse. Perform TEST VER-1A.
  16. Disconnect injector No. 1 electrical connector. Using scan tool ohmmeter mode, check resistance of ASD relay output circuit at ASD relay connector. See Figure for wire ID. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, replace injector No. 1. Replace fuse. Perform TEST VER-1A.
  17. Disconnect injector No. 2 electrical connector. Using scan tool ohmmeter mode, check resistance of ASD relay output circuit at ASD relay connector. See Figure for wire ID. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, replace injector No. 2. Replace fuse. Perform TEST VER-1A.
  18. Disconnect injector No. 3 electrical connector. Using scan tool ohmmeter mode, check resistance of ASD relay output circuit at ASD relay connector. See Figure for wire ID. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, replace injector No. 3. Replace fuse. Perform TEST VER-1A.
  19. Disconnect injector No. 4 electrical connector. Using scan tool ohmmeter mode, check resistance of ASD relay output circuit at ASD relay connector. See Figure for wire ID. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, replace injector No. 4. Replace fuse. Perform TEST VER-1A.
  20. Disconnect injector No. 5 electrical connector. Using scan tool ohmmeter mode, check resistance of ASD relay output circuit at ASD relay connector. See Figure for wire ID. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, replace injector No. 5. Replace fuse. Perform TEST VER-1A.
  21. Disconnect injector No. 6 electrical connector. Using scan tool ohmmeter mode, check resistance of ASD relay output circuit at ASD relay connector. See Figure for wire ID. If resistance is 5 ohms or less, repair short to ground on ASD relay output circuit. Replace fuse. Perform TEST VER-1A. If resistance is more than 5 ohms, replace injector No. 6. Replace fuse. Perform TEST VER-1A.
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