Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

It can take up to 10 minutes for the PCM to power down after the ignition is turned off. Disconnecting the batteries during this time will cause this DTC to set.

CHECK FOR POOR CONNECTIONS AT THE BATTERIES
1. Visually inspect the wiring at the battery for damaged wires, or corrosion.
  Are the connections tight and free of corrosion?
  
  Yes
  - Go To 2.
  No
  - Repair the poor connections at the batteries.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FOR LOW BATTERY VOLTAGE / DEFECTIVE BATTERY
1. Disconnect both batteries.
  NOTE:
  Keep the batteries disconnected through the entire test procedure.
2. Check the battery(s) for correct operation. Refer to DIAGNOSIS AND TESTING .
  Do both batteries pass the battery test?
  
  Yes
  - Go To 3.
  No
  - Recharge or replace the battery(s).
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE PCM FUSED B+ CIRCUITS
1. Turn the ignition off.
2. Disconnect the PCM C2 harness connector.
3. Measure the resistance between the positive battery post and the two PCM Fused B+ circuits.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4.
  No
  - Repair the open Fused B+ circuit to PCM.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE PCM GROUND CIRCUITS
1. Measure the resistance between the negative battery post and the two PCM ground circuits.
  Is the resistance less than 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the open ground circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
BATTERY POSITIVE SHORTED TO OTHER CIRCUITS
1. Measure the resistance between the two PCM Fused B+ circuits and all other circuits in the PCM harness connector, except other supply circuits.
  Is the resistance above 10k Ohms?
  
  Yes
  - Go To 6.
  No
  - Repair the battery circuit short to other circuits in engine harness.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
RETURN CIRCUIT SHORTED
1. Measure the resistance between the two PCM ground circuits and all other circuits in the PCM harness connector, except other ground circuits.
  Is the resistance above 10k Ohms?
  
  Yes
  - Go To 7.
  No
  - Repair or replace the engine harness.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
BATTERY POSITIVE SHORTED TO GROUND
1. Measure the resistance between the PCM Fused B+ circuits and ground.
  Is the resistance above 10k Ohms?
  
  Yes
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
  No
  - Repair Battery Fused B+ circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .