Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, erase DTCs in the PCM.
3. Turn the ignition off. Leave the ignition off for 5 minutes.
4. Start the engine.
5. Allow the engine to run for 2 minutes.
6. With the scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Refer to DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.
INSPECT THE ACTIVE GRILL SHUTTER ASSEMBLY FOR SIGNS OF PHYSICAL DAMAGE
1. Inspect the Active Grill Shutter Assembly and connector for damage due to road debris.
  Is the Active Grill Shutter Assembly or connector damaged or disconnected?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 3
GENERATOR
1. Turn the ignition off. Leave it off for 5 minutes.
2. Disconnect the Generator Module harness connector.
3. Ignition on, engine not running.
4. With the scan tool, erase DTCs in the PCM.
5. Crank the engine for no more than 10 seconds if it will not start.
6. With the scan tool, select View DTCs.
  Does the DTC become active?
  
  Yes
  - Go To 4
  No
  - Replace the Generator in accordance with the service information.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
GLOW PLUG MODULE
1. Turn the ignition off. Leave it off for 5 minutes.
2. Disconnect the Glow Plug Module harness connector.
3. Ignition on, engine not running.
4. With the scan tool, erase DTCs in the PCM.
5. Crank the engine for no more than 10 seconds if it will not start.
6. With the scan tool, select View DTCs.
  Does the DTC become active?
  
  Yes
  - Go To 5
  No
  - Replace the Generator in accordance with the service information.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK THE (D511) LIN BUS CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Glow Plug Module harness connector.
3. Disconnect the PCM C1 harness connector.
4. Measure the resistance between the (D511) LIN Bus circuit and all other circuits on the PCM C1 harness connector at the PCM C1 harness connector.
  Is the resistance above 10k Ohms on all other circuits?
  
  Yes
  - Go To 6
  No
  - Repair the (D511) LIN Bus circuit for a short to the circuit that measured less than 10k Ohms.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK THE (D511) LIN BUS CIRCUIT FOR A SHORT TO GROUND
1. Measure the resistance between ground and the (D511) LIN Bus circuit at the Glow Plug Module harness connector.
  Is the resistance above 10k Ohms?
  
  Yes
  - Go To 7
  No
  - Repair the (D511) LIN Bus circuit for a short to ground.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK THE (D511) LIN BUS CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (D511) LIN Bus circuit between the Glow Plug Module harness connector and the PCM C1 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (D511) LIN Bus circuit for an open/high resistance.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 8
CHECK THE (A940) FUSED B+ CIRCUIT
1. Turn the ignition off.
2. Disconnect the AGS harness connector.
3. Measure the voltage at the (A940) Fused B+ circuit at the AGS harness connector.
  NOTE:
  The (A940) Fused B+ circuit is supplied to two terminals at the AGS Assembly. Be sure to check both circuits.
  
  Is the voltage equal to battery voltage?
  
  Yes
  - Go To 9
  No
  - Repair the (A940) Fused B+ circuit for an open or short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK THE (Z904) GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance between ground and the (Z904) Ground circuit at the AGS harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 10
  No
  - Repair the (Z904) Ground circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK FOR DAMAGED WIRES OR DAMAGED TERMINALS
1. Turn the ignition off.
2. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Glow Plug Module and the PCM.
3. Look for any chafed, pierced, pinched, or partially broken wires.
4. Look for broken, bent, pushed out or corroded terminals.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 11
ACTIVE GRILL SHUTTER ASSEMBLY
1. Replace the Active Grill Shutter Assembly in accordance with the service information. Navigate to Miscellaneous functions and perform the 'Active Grille Shutter Replaced' procedure.
2. Reconnect the PCM C1 harness connector.
3. Turn the ignition on.
4. With the scan tool, erase DTCs.
5. With the scan tool, actuate the AGS Assembly.
6. With the scan tool, view DTCs.
  Did the DTC return?
  
  Yes
  - Go To 12
  No
  - Repair complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Active Grille Shutter 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.
4. Perform any Technical Service Bulletins (TSBs) that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the service information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .