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.

ACTIVE DTC
1. Test drive the vehicle in Stop/Start mode.
2. With the scan tool, view DTCs.
  NOTE:
  If the vehicle has a no crank condition and/or DTC P141D is present along with this DTC, try replacing Starter Relay 2 and recheck for fault being active before proceeding.
  
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
CHECK THE (T762) ICR CONTROL RELAY CONTROL 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 (T762) ICR Control Relay Control 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 .
CHECK THE ICR CONTROL RELAY COIL SUPPLY
1. Remove Starter Relay 2 from the PDC.
2. Using a 12-volt test light connected to ground, probe the 12 volt supply circuit at the Starter Relay 2 connector (terminal 30).
  NOTE:
  Compare the brightness to that of a connection direct battery.
  
  Is the test light illuminated and bright?
  
  Yes
  - Go To 4
  No
  - Repair the open 12 volt supply to the Starter Relay 2.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE ICR CONTROL RELAY
1. Connect a jumper across terminal 30 and terminal 87 of the Starter Relay 2 connector.
2. Measure the voltage of the (T762) ICR Control Relay Control circuit at the PDC C3 harness connector with the jumper in place.
  Is the voltage equal to battery voltage?
  
  Yes
  - Go To 5
  No
  - Replace the PDC in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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
  - 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 STANDARD PROCEDURE .