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PT Cruiser

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.
  1. Turn engine over by hand to ensure engine is not seized. On M/T models, if engine is not seized, go to next step. On A/T models, if engine is not seized, go to step  3 . If engine is seized, repair mechanical condition preventing engine from cranking.
  2. Turn ignition on. Using scan tool, monitor CLUTCH SWITCH state in INPUTS/OUTPUTS. Completely depress and release clutch pedal several times. If CLUTCH SWITCH state changes from OPEN when clutch pedal is released to CLOSED when clutch pedal is completely depressed, go to step  4 . If CLUTCH SWITCH state does not change from OPEN when clutch pedal is released to CLOSED when clutch pedal is completely depressed, go to step  12 .
  3. Ensure ignition is off. Shift transmission into Park or Neutral. Disconnect PCM harness connectors. For PCM location, see PCM LOCATIONS  table. Measure resistance between ground and park/neutral position switch sense circuit (Black/White wire) at terminal No. 76 at PCM C2 harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Black/White wire between PCM and splice S130. See WIRING DIAGRAMS article.
  4. 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.
  5. Turn ignition 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 B5 at starter relay harness connector and starter relay output circuit (Brown wire) at terminal B1 at starter relay harness connector. See Figure . If engine cranks, go to next step. If engine does not crank, go to step  9 .
  6. Connect a test light between ground and ignition switch output circuit (Yellow wire) at terminal B4 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.
  7. Turn ignition off. Disconnect PCM harness connectors. Measure resistance of starter relay control circuit (Tan wire) between terminal B2 at starter relay harness connector and terminal No. 31 at PCM C1 harness connector. See Figure . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Tan wire.
  8. 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.
  9. Disconnect starter solenoid harness connector. Measure resistance of starter relay output circuit (Brown wire) between starter solenoid harness connector and terminal B1 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.
  10. Connect a test light between ground and fused battery voltage circuit (Red wire) at terminal B5 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.
  11. If no other possible causes are remaining, replace starter.
  12. Turn ignition off. Disconnect Clutch Pedal Position (CPP) switch harness connector. CPP switch is located on clutch pedal bracket. Disconnect PCM harness connectors. For PCM location, see PCM LOCATIONS  table. Measure resistance of signal circuit (Light Green/Black wire) between CPP switch harness connector and terminal No. 23 at PCM C1 harness connector. See Figure . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Light Green/Black wire.
  13. Connect a test light between battery positive and ground circuit (Black/Tan wire) at CPP switch harness connector. If test light illuminates brightly, go to next step. If test light does not illuminate brightly, repair open or high resistance between CPP switch and ground located on left strut tower.
  14. Reconnect PCM harness connectors. Connect a jumper wire between signal circuit (Light Green/Black wire) and ground circuit (Black/Tan wire) at CPP switch harness connector. Turn ignition on. Using scan tool, monitor CLUTCH SWITCH state in INPUTS/OUTPUTS. If CLUTCH SWITCH state is CLOSED, replace CPP switch. If CLUTCH SWITCH state is not CLOSED, go to next step.
  15. If no other possible causes are remaining, replace PCM.
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