Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. 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. Apply the brake pedal.
3. With the scan tool, read the Body Control Module (BCM) DTCs and record on the repair order.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - 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. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK FOR AN ADDITIONAL DTC
NOTE:
If DTC P0928-11 and B2885-11 are both active, repair DTC B2885-11 before continuing with this diagnostic test.
1. With the scan tool, read the BCM DTCs.
  Does the scan tool display DTC B2885-11-TRUCK BED TOPPER STOP LAMP-CIRCUIT SHORT TO GROUND as active?
  
  Yes
  - Perform the DTC B2885-11-TRUCK BED TOPPER STOP LAMP-CIRCUIT SHORT TO GROUND diagnostic test.
  No
  - Go To 3
CHECK THE BTSI SOLENOID FOR CORRECT OPERATION
NOTE:
The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
1. Turn the ignition off to the lock position.
2. Electronic Shift Module (ESM) equipped vehicles: Disconnect the Shifter Lever Assembly harness connector.
3. Non-ESM equipped vehicles: Disconnect the BTSI Solenoid harness connector.
4. Turn the ignition on.
5. Using a 12-volt test light connected to ground, check the (K321) BTSI Control circuit at the Shifter Lever Assembly C2 harness connector.
6. With the scan tool, actuate the BTSI Solenoid.
  Does the test light illuminate brightly on and off while cycling the actuator?
  
  Yes
  - ESM equipped vehicles: Replace the BTSI Solenoid (Integral to the Transmission Shifter) in accordance with the Service Information.
  - Non-ESM equipped vehicles: Replace the BTSI Solenoid (Integral to the Transmission Shifter) in accordance with the Service Information. (Refer to )
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (K321) BTSI CONTROL CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the BCM E harness connector.
3. Check for continuity between ground and the (K321) BTSI Control circuit at the BCM E harness connector.
  Is there continuity between ground and the (K321) BTSI Control circuit?
  
  Yes
  - Repair the short to ground in the (K321) BTSI Control circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .