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.

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs and record on the repair order.
  Is the DTC active or pending?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK THE (A940) FUSED B(+) CIRCUITS AT THE ACTIVE GRILL SHUTTER ACTUATOR
1. Disconnect the Active Grill Shutter Actuator harness connector.
2. Turn the ignition on.
3. Measure the voltage on both (A940) Fused B(+) circuits at the Active Grill Shutter Actuator harness connector.
  Is the voltage equal to battery voltage?
  
  Yes
  - Go To 3
  No
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK THE (Z904) GROUND CIRCUIT AT THE ACTIVE GRILL SHUTTER ACTUATOR
1. Turn the ignition off.
2. Measure the resistance between ground and the (Z904) Ground circuit at the Active Grill Shutter Actuator harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (Z904) Ground circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK THE (D511) LIN BUS CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Measure the resistance between the (D511) LIN BUS circuit and all other circuits at the PCM C1 harness connector.
  Is the resistance above 10k Ohms between the (D511) LIN BUS circuit and all other circuits?
  
  Yes
  - Go To 5
  No
  - Repair (D511) LIN BUS circuit for a short to the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
ACTIVE GRILL SHUTTER ACTUATOR
1. Replace the Active Grill Shutter Actuator in accordance with the Service Information. Refer to GRILLE, ACTIVE SHUTTER, REMOVAL .
2. Reconnect the PCM C1 harness connector.
3. Turn the ignition on.
4. With the scan tool erase DTCs. Navigate to Miscellaneous functions and perform the 'Active Grille Shutter Replaced' procedure.
5. Start the engine.
6. With the scan tool read DTCs
  Did the DTC return?
  
  Yes
  - Go To 6
  No
  - Repair complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK RELATED PCM AND COMPONENT CONNECTIONS
1. Perform any Service Bulletins that apply.
2. Disconnect all PCM harness connectors.
3. Disconnect all related in-line harness connections (if equipped).
4. Disconnect the related component harness connectors.
5. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Check for spread terminals and verify proper terminal tension.
  Repair any conditions that are found.
6. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
9. With the scan tool, erase DTCs.
10. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
11. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module in accordance with the Service information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  - Test complete.