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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 426 (5.7L - DTCS P058C To P1495 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P141D-Starter Relay Feedback Open Circuit Performance >> 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. ACTIVE DTC 
    NOTE:

    If there are any Starter Relay Control circuit DTCs present in the PCM or BCM, diagnose and repair those DTCs before continuing with this test procedure.

    1. Attempt to perform a key start of the engine.
    2. With the scan tool, view DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (T753) IGNITION CRANK SENSE CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the PDC C3 harness connector.
    3. Disconnect the PCM C2 harness connector.
    4. Measure the resistance of the (T753) Ignition Crank Sense circuit between the PDC C3 harness connector and the PCM C2 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  3

      No 

      • Repair the (T762) ICR Control Relay Control circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. CHECK THE (T753) IGNITION CRANK SENSE CIRCUIT FOR A SHORT TO GROUND 
    1. Measure the resistance between ground and the (T753) Ignition Crank Sense circuit at the PDC C3 harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the (T762) ICR Control Relay Control circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE STARTER SOLENOID FEED CIRCUIT BETWEEN STARTER RELAY 1 AND THE PDC CONNECTOR 
    1. Reconnect the PDC C3 harness connector.
    2. Remove Starter Relay 1 from the PDC.
    3. Measure the resistance between the Starter Relay 1 connector (terminal 87) and the (T762) ICR Control Relay Control circuit at the PCM C3 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  5

      No 

      • Check all the fuses for a blown fuse. If a fuse is blown, replace the fuse and retest. If the fuses are good, replace the PDC in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. CHECK THE INTERNAL CIRCUIT BETWEEN STARTER RELAY 1 AND STARTER RELAY 2 
    1. Measure the resistance between Starter Relay 1 connector (terminal 30) and Starter Relay 2 (terminal 87).

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  6

      No 

      • Replace the PDC in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  6. CHECK THE BATTERY SUPPLY TO STARTER RELAY 2 
    1. Turn the ignition on.
    2. Using a 12-volt test light connected to ground probe the battery supply to the Starter Relay 2 connector (terminal 30).
      NOTE:

      Compare the brightness to that of a connection across direst battery.

      Is the test illuminated and bright?

      Yes 

      • Go To  7

      No 

      • Check for any blown fuses. If the fuses are good, replace the PDC in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  7. STARTER RELAY 1 
    1. Turn the ignition off.
    2. Reconnect the PCM C2 harness connector.
    3. Reinstall Starter Relay 2.
    4. Replace Starter Relay 1 with a known good relay.
    5. Turn the ignition on.
    6. With the scan tool, erase DTCs.
    7. Attempt to perform a key start of the engine.
    8. With the scan tool, view DTCs.

      Did the DTC return as active or pending?

      Yes 

      • Replace the Starter Relay.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  8
  8. STARTER RELAY 2 
    1. Turn the ignition off.
    2. Reconnect the PCM C2 harness connector.
    3. Reinstall Starter Relay 1.
    4. Replace Starter Relay 2 with a known good relay.
    5. Turn the ignition on.
    6. With the scan tool, erase DTCs.
    7. Attempt to perform a key start of the engine.
    8. With the scan tool, view DTCs.

      Did the DTC return as active or pending?

      Yes 

      • Go To  9

      No 

      • Replace the Starter Relay.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  9. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Power Distribution Center and the Powertrain Control Module (PCM).
    2. Look for any chafed, pierced, pinched or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Switch and Powertrain Control Module connectors.
    4. Perform any Technical Service Bulletins that may apply.

      Were there any problems found?

      Yes 

      • Repair as necessary.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

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