Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

NO CRANK CONDITION DIAGNOSTIC TEST REFERENCE

TEST	ACTION	APPLICABILITY
1	NOTE: Check all fuses and verify the battery is fully charged and capable of passing a load test before continuing. WARNING: MAKE SURE THE BATTERY IS DISCONNECTED, THEN WAIT TWO MINUTES BEFORE PROCEEDING. Turn the engine over by hand to ensure the engine is not seized.Is the engine able to turn over?Yes --> Go To 2No --> Repair the mechanical condition preventing the starter motor from cranking.Perform POWERTRAIN VERIFICATION TEST VER - 1 .	All
2	Turn the ignition off. Disconnect the PCM harness connectors. Move the Gear selector through all gear positions, from Park to 1st and back. While moving the gear selector through each gear, measure the resistance between ground and the TRS T41 Sense (P/N Sense) circuit. Did the resistance change from above 10.0 ohms to below 10.0 ohms? Yes --> Go To 3 No --> Replace the Transmission Range Sensor. Perform POWERTRAIN VERIFICATION TEST VER - 1 .	All
3	Check the Battery Cables for high resistance using the service information procedure. Did either Battery Cable have a voltage drop greater than 0.2 of a volt? Yes --> Repair the Battery circuit for high resistance. Perform POWERTRAIN VERIFICATION TEST VER - 1 . No --> Go To 4	All
4	WARNING: Place shifter in Neutral and set the Parking Brake. Disconnect the Clutch Interlock Switch.If this vehicle is not equipped with a manual transmission answer NO to this test and continue.Connect a jumper wire between the two terminals of the Clutch Interlock Switch and attempt to start the engine.Does the engine crank?Yes --> Replace the Clutch Interlock Switch.Perform POWERTRAIN VERIFICATION TEST VER - 1 .No --> Go To 5 NOTE: Remove the jumper wire and connect the Switch before continuing.	All
5	Turn ignition off. Remove the Starter Relay from PDC. WARNING: The Parking Brake must be on and the Transmission must be in park for a vehicle equipped with an automatic transmission or Neutral on a Manual transmission. WARNING: The engine may be cranked in the next step. Keep away from moving engine parts. Briefly connect a jumper wire between Starter Relay B+ circuit and the (T40) Starter Relay Output circuits. Did the Starter Motor crank the engine? Yes --> Go To 6 No --> Go To 8 NOTE: Remove the jumper wire before continuing.	All
6	Ignition on, engine not running. For vehicles equipped with a Manual Transmission, use a 12-volt test light connected to ground, probe the (T141) Clutch Interlock Relay Output circuit at the Relay connection. While observing 12-volt test light, hold ignition key in the start position. For vehicles equipped with an Automatic Transmission, use a 12-volt test light connected to ground and probe the (F45) Fused Ignition Switch Output circuit at the Relay connection. Does the test light illuminate brightly? Yes --> Go To 7 No --> Repair the open or short to ground in the (A41) Ignition Switch Output circuit. Inspect related fuses and repair as necessary. Perform POWERTRAIN VERIFICATION TEST VER - 1 .	All
7	Disconnect the PCM harness connectors. Measure the resistance of the TRS T41 Sense (P/N Sense) circuit from the Relay terminal to the PCM harness connector. Is the resistance below 5.0 ohms? Yes --> Replace the Starter Motor Relay. Perform POWERTRAIN VERIFICATION TEST VER - 1 . No --> Repair the open in the TRS T41 Sense (P/N Sense) circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 .	All
8	Turn the ignition off. Remove the Starter Relay. Disconnect the Starter Relay Output connector from the Starter Solenoid. Measure the resistance of the (T40) Starter Relay Output circuit between the Relay and the Solenoid harness connector. Is the resistance below 5.0 ohms? Yes --> Go To 9 No --> Repair the open in the (T40) Starter Relay Output circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 .	All
9	Turn the ignition off. Using a 12-volt test light connected to ground, probe the (A2) Fused B+ circuit at the Starter Relay terminal. Does the test light illuminate brightly? Yes --> Go To 10 No --> Repair the open or high resistance in the Fused B+ circuit. Inspect related fuses and repair as necessary. Perform POWERTRAIN VERIFICATION TEST VER - 1 .	All
10	If there are no other possible causes remaining, review repair. Repair Replace the Starter. Perform POWERTRAIN VERIFICATION TEST VER - 1 .	All