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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Totally Integrated Power Module (TIPM) - Electrical Diagnostics) >> DTC Troubleshooting >> P1278-Starter Control Circuit 2 High >> Diagnostic Test

Diagnostic Test

  1. ACTIVE DTC 
    1. Ignition on, engine not running.
    2. With a scan tool, read DTCs.

      Is the DTC active at this time?

      Yes 

      • Go To step  2

      No 

  2. (T40) STARTER FEED CIRCUIT SHORTED TO BATTERY VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the Starter Relay.
    3. Disconnect the C10 TIPM harness connector.
    4. Turn the ignition on.
    5. Measure the voltage of the (T40) Starter Relay Output circuit in the C10 TIPM harness connector.

      Is the resistance below 100 ohms?

      Yes 

      No 

      • Go to step  3
  3. (T750) STARTER RELAY OUTPUT CIRCUIT SHORTED TO BATTERY VOLTAGE 
    1. Disconnect the Starter Solenoid connector.
    2. Measure the voltage of the (T750) Starter Relay Output circuit in the Starter Relay harness connector.

      Is the resistance below 100 ohms?

      Yes 

      No 

      • Go to step  4
  4. STARTER 
    1. Reconnect the Starter Solenoid harness connector.
    2. Using a 12-volt test light connected ground, probe the (T750) Stater Relay Output circuit in the Starter Relay harness connector.
    3. Crank the engine.

      Does the test light illuminate?

      Yes 

      No 

      • Go to step  5
  5. STARTER RELAY INTERNAL SHORT 
    1. Install a substitute relay in place of the Starter Relay.
    2. Reconnect the C10 TIPM harness connector.
    3. Crank the engine.
    4. With a scan tool, read DTCs.

      Does the DTC reset?

      Yes 

      No