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.

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Using the scan tool, record and erase the DTCs.
3. Try to start the engine.
4. With the scan tool, read the Active DTCs and wait one minute.
  Does the scan tool display: B215B-13-IGNITION RUN/START 2 CONTROL - CIRCUIT OPEN as active?
  
  Yes
  - Go To 2
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(F20) IGNITION SWITCH OUTPUT CIRCUIT WIRE OPEN

Fig 1: Checking Ignition Switch Output Circuit Wire For Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Radio Frequency Hub (RF Hub) C1 harness connector.
3. Disconnect the Body Control Module C5 harness connector.
4. Measure the resistance of the (F20) Ignition Switch Output wire between the Body Control Module C5 harness connector and the RF Hub C1 harness connector.
  Is the resistance below 2.0 Ohms?
  
  Yes
  - Replace the Radio Frequency Hub (RF Hub) Module in accordance with the Service Information. Refer to MODULE, RADIO FREQUENCY (RF HUB), REMOVAL .
  - Perform the RADIO FREQUENCY HUB VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the open in the (F20) Ignition Switch Output wire.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .