No-Crank Condition: Neon
NOTE:
For circuit identification and wiring diagram, see WIRING DIAGRAMS article. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-1
under VERIFICATION TESTS to ensure system is functioning properly.
- Disconnect negative battery cable and wait 2 minutes. Turn engine over by hand to ensure engine is not seized. If engine is not seized, go to next step. If engine is seized, repair mechanical condition preventing engine from cranking.
- Ensure ignition is off. Reconnect negative battery cable. Disconnect PCM harness connectors. For PCM location, see PCM LOCATIONS table. On M/T models, go to next step. On A/T models, measure resistance between ground and Park/Neutral Position (PNP) switch sense circuit (Brown/Yellow wire) at terminal No. 76 at PCM C2 harness connector. See Fig 1 . Shift transmission through all gears, from Park to 1st and back. Resistance should be less than 10 ohms when transmission is in Park or Neutral, then switch to more than 10 ohms when transmission is not in Park or Neutral. If resistance is as specified, go to step 4 . If resistance is not as specified, replace PNP switch.
- Measure resistance between ground and clutch interlock switch sense circuit (Yellow/Red wire) at terminal No. 76 at PCM C2 harness connector. See Fig 1 . Resistance should be less than 10 ohms with clutch pedal fully depressed, then switch to more than 10 ohms with clutch pedal released. If resistance is as specified, go to next step. If resistance is not as specified, replace clutch interlock/upstop switch.
- Reconnect PCM harness connectors. Check battery cables for high resistance. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS. If voltage drop is .2 volt or less on both battery cables, go to next step. If voltage drop on either battery cable is more than .2 volt, repair high resistance in battery circuit.WARNING: Engine may crank during the following step. Ensure transmission is in Park (A/T) or Neutral (M/T) and parking brake is applied. Keep away from moving engine parts.
- Ensure ignition is off. Remove starter relay from Power Distribution Center (PDC). PDC is located in left front corner of engine compartment. Briefly connect a jumper wire between fused battery voltage circuit (Red wire) at terminal No. 25 at starter relay harness connector and starter relay output circuit (Brown wire) at terminal No. 26 at starter relay harness connector. See Figure . If engine cranks, go to next step. If engine does not crank, go to step 9 .
- Connect a test light between ground and ignition switch output circuit (Yellow wire) at terminal No. 28 at starter relay harness connector. While observing test light, turn ignition switch to START position. If test light illuminates brightly, go to next step. If test light does not illuminate brightly, repair open or high resistance in ignition switch output circuit.
- Turn ignition off. Disconnect PCM harness connectors. Measure resistance of starter relay control circuit (Tan wire) between terminal No. 28 at starter relay harness connector and terminal No. 31 at PCM C1 harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Tan wire.
- Reconnect PCM harness connectors. Install a substitute relay in place of starter relay. Attempt to start engine. If engine cranks, replace starter relay. If engine does not crank, replace PCM.
- Disconnect starter solenoid harness connector. Measure resistance of starter relay output circuit (Brown wire) between starter solenoid harness connector and terminal No. 26 at starter relay harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Brown wire.
- Connect a test light between ground and fused battery voltage circuit (Red wire) at terminal No. 25 at starter relay harness connector. If test light illuminates brightly, go to next step. If test light does not illuminate brightly, repair open or high resistance in fused battery voltage circuit.
- If no other possible causes are remaining, replace starter.