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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 364 (Communication - Non-DTC Based Diagnostics - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> No Response From Pcm (Powertrain Control Module) >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. TEST FOR INTERMITTENT CONDITION 
    NOTE:

    Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.

    1. Turn the ignition on.
      NOTE:

      Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.

    2. With the scan tool, read the module status.
      NOTE:

      Check the BCM for any active CAN hardware DTCs, perform DTC before proceeding.

      Does the scan tool indicate that the module is active on the bus?

      Yes 

      • The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.

      No 

      • Go To  2
  2. CHECK THE (A209) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT 
    1. Turn the ignition off.
    2. Disconnect the PCM C1 harness connector.
    3. Using a 12-volt test light connected to ground, check the (A209) Fused B(+) circuit.

      Does the test light illuminate brightly for each circuit?

      Yes 

      • Go To  3

      No 

      • Repair the open or short in the (A209) Fused B(+) circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to appropriate Testing & Diagnostics article in Engine Performance .
  3. CHECK THE (Z908) GROUND CIRCUITS FOR AN OPEN 
    1. Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuits in the PCM C1 harness connector.

      Does the test light illuminate brightly for each circuit?

      Yes 

      • Go To  4

      No 

      • Repair the open in the (Z908) Ground circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to appropriate Testing & Diagnostics article in Engine Performance .
  4. CHECK THE (F942) IGNITION RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT 
    1. Turn the ignition on.
    2. Using a 12-volt test light connected to ground, check the (F942) Ignition Run/Start Control Output circuit.

      Does the test light illuminate brightly?

      Yes 

      • Go To  5

      No 

      • Repair the open or short in the (F942) Ignition Run/Start Control Output circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to appropriate Testing & Diagnostics article in Engine Performance .
  5. CHECK THE (F1) IGNITION OFF/RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT 
    1. Using a 12-volt test light connected to ground, check the (F1) Ignition Off/Run/Start Control Output Circuit.

      Does the test light illuminate brightly?

      Yes 

      • Go To  6

      No 

      • Repair the open or short in the (F1) Ignition Off/Run/Start Control Output Circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to appropriate Testing & Diagnostics article in Engine Performance .
  6. CHECK THE (F342) FUSED ASD RELAY OUTPUT CIRCUIT FOR AN OPEN OR SHORT 
    1. Turn the ignition on.
    2. Using a 12-volt test light connected to ground, check the (F342) Fused ASD Relay Output circuits.

      Does the test light illuminate brightly for each circuit?

      Yes 

      • Go To  7

      No 

      • Repair the open or short in the (F342) Fused ASD Relay Output circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to appropriate Testing & Diagnostics article in Engine Performance .
  7. CHECK THE (D27) CAN C BUS (+) CIRCUIT FOR AN OPEN 
    1. Turn the ignition off.
    2. Disconnect the STAR CAN Connector DASH C4 harness connector. and perform the CAN C DASH STAR CONNECTOR REMOVAL process. Refer to STANDARD PROCEDURE .
    3. Measure the resistance of the (D27) CAN C Bus (+) circuit between the STAR CAN Connector DASH C4 harness connector and the PCM C1 connector.

      Is resistance below 5.0 Ohms?

      Yes 

      • Go To  8

      No 

      • Repair the open in the (D27) CAN C Bus (+) circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to appropriate Testing & Diagnostics article in Engine Performance .
  8. CHECK THE (D28) CAN C BUS (-) CIRCUIT FOR AN OPEN 
    1. Measure the resistance of the (D28) CAN C Bus (-) circuit between the STAR CAN Connector DASH C4 harness connector and the PCM C1 connector.

      Is resistance below 5.0 Ohms?

      Yes 

      No 

      • Repair the open in the (D28) CAN C Bus (-) circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to appropriate Testing & Diagnostics article in Engine Performance .
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