Diagnostic Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chaffed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
BTSI SOLENOID

Fig 1: Measuring Voltage Of BTSI Unlock Signal Circuit Using 12-Volt Test Light Connected To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Shift Lever Assembly harness connector.
3. Turn the ignition on.
4. Press the brake pedal.
5. Using a 12-volt test light connected to ground, measure the voltage of the (K321) BTSI Unlock Signal circuit.
  Does the test light illuminate brightly when the brake pedal is depressed?
  
  Yes
  - Go To 3
  No
  - Go To 4
BTSI SOLENOID GROUND CIRCUITS

Fig 2: Measuring Resistance Between Ground & Ground Circuit Using Test Light Connected To B+
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Using a test light connected to B+. Measure the resistance between ground and the Ground circuit in the Shift Lever Assembly harness connector.
  Does the test light illuminate brightly for each circuit?
  
  Yes
  - Replace the Shift Lever Assembly in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the appropriate ground circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(K321) BTSI UNLOCK SIGNAL CIRCUIT SHORTED TO VOLTAGE

Fig 3: Measuring Voltage Of BTSI Unlock Signal Circuit Using 12-Volt Test Light Connected To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Cluster C3 harness connector.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, measure the voltage of the (K321) BTSI Unlock Signal circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Repair the (K321) BTSI Unlock Signal circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
(K321) BTSI UNLOCK SIGNAL SHORTED TO GROUND

Fig 4: Measuring Resistance Between Ground & BTSI Unlock Signal Circuit Using Test Light Connected To B+
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Using a test light connected to B+, measure the resistance between ground and the (K321) BTSI Unlock Signal circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Repair the (K321) BTSI Unlock Signal circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 6
(K321) BTSI UNLOCK SIGNAL CIRCUIT OPEN

Fig 5: Measuring Resistance Of BTSI Unlock Signal Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (K321) BTSI Unlock Signal circuit.
  Is the resistance above 10K Ohms?
  
  Yes
  - Repair the (K321) BTSI Unlock Signal for an open.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Cluster in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .