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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System - Non-DTC Diagnostics >> Diagnosis and Testing >> No Response From Pcm (Powertrain Control Module) >> Diagnostic Test

Diagnostic Test

  1. TEST FOR INTERMITTENT CONDITION 
    1. Turn the ignition on.
      NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
    2. With the scan tool, select ECU View.
      NOTE: A red "X" will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.
      NOTE: Check the TIPM for any active CAN C hardware DTCs, and perform DTC(s) before proceeding.

      Does the scan tool display a red "X" next to the module?

      Yes 

      • Go to Step  2.

      No 

      • The no response condition is not present at this time. Using Figure as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
  2. (A209) FUSED B(+) CIRCUIT OPEN OR SHORTED 
    Fig 1: Checking Fused B(+) Circuit Using 12-Volt Test Light Connected To Ground
    GC0098205Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the PCM C1 harness connector.
      CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.
    3. Using a 12-volt test light connected to ground, check the (A209) Fused B(+) circuit.

      Does the test light illuminate brightly?

      Yes 

      • Go to Step  3.

      No 

  3. (Z904) (Z920) GROUND CIRCUITS OPEN 
    Fig 2: Checking Each Ground Circuit Using 12-Volt Test Light Connected To 12-Volts
    GC0098206Courtesy of CHRYSLER LLC
    1. Using a 12-volt test light connected to 12-volts, check each (Z904) and (Z920) ground circuit.

      Does the test light illuminate brightly for each circuit?

      Yes 

      • Go to Step  4.

      No 

  4. (F950) RUN/START RELAY OUTPUT CIRCUIT OPEN OR SHORTED 
    Fig 3: Checking Run/Start Relay Output Circuit Using 12-Volt Test Light Connected To Ground
    GC0098207Courtesy of CHRYSLER LLC
    1. Turn the ignition on.
    2. Using a 12-volt test light connected to ground, check the (F950) Run/Start Relay Output circuit.

      Does the test light illuminate brightly?

      Yes 

      • Go to Step  5.

      No 

  5. (F342) FUSED ASD RELAY OUTPUT CIRCUIT OPEN OR SHORTED 
    Fig 4: Checking Run/Start Relay Output Circuit Using 12-Volt Test Light Connected To Ground
    GC0098207Courtesy of CHRYSLER LLC
    1. Turn the ignition on.
    2. Using a 12-volt test light connected to ground, check the (F342) Fused ASD Relay Output circuit.

      Does the test light illuminate brightly?

      Yes 

      • Go to Step  6.

      No 

  6. (D65) CAN C BUS (+) CIRCUIT OPEN 
    Fig 5: Measuring Resistance Of CAN C Bus (+) Circuit Between TIPM C6 Harness Connector & Appropriate Terminal Of Special Tool #8815
    GC0098208Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the TIPM C6 harness connector.
    3. Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C6 harness connector and the appropriate terminal of the special tool #8815.

      Is resistance below 5.0 ohms?

      Yes 

      • Go to Step  7.

      No 

  7. (D64) CAN C BUS (-) CIRCUIT OPEN 
    Fig 6: Measuring Resistance Of CAN C Bus (-) Circuit Between TIPM C6 Harness Connector & Appropriate Terminal Of Special Tool #8815
    GC0098209Courtesy of CHRYSLER LLC
    1. Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C6 harness connector and the appropriate terminal of the special tool #8815.

      Is resistance below 5.0 ohms?

      Yes 

      No