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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 832 (3.0L Diesel - DTCS P050E-00 To P067B-00 - 1500) >> Diagnosis And Testing >> P0629-00-Fuel Pump Control Circuit High >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS ACTIVE 
    1. Ignition on, engine not running.
    2. With the scan tool, erase DTCs in the PCM.
    3. Crank the engine for no more than 10 seconds if it will not start.
    4. With the scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
  2. POWERTRAIN CONTROL MODULE 
    1. Turn the ignition off.
    2. Disconnect the PCM C1 harness connector.
    3. Disconnect the PDC harness connectors.
    4. Measure the resistance between the (K31) Fuel Pump Control circuit and all other circuits at the PCM C1 harness connector.

      Is the resistance below 10k Ohms between the (K31) Fuel Pump Control circuit and any other circuits?

      Yes 

      • Repair the (K31) Fuel Pump Control circuit for a short to the other circuit that measured below 10k Ohms.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Go To  3
  3. POWER DISTRIBUTION CENTER (PDC) 
    1. Replace the Power Distribution Center in accordance with the service information.
    2. Ignition on, engine not running.
    3. With the scan tool, erase DTCs in the PCM.
    4. Crank the engine for no more than 10 seconds if it will not start.
    5. With the scan tool, select View DTCs.

      Did the DTC return?

      Yes 

      • Replace the Powertrain Control Module (PCM) in accordance with the service information.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No