Diagnostic Test

Turn the ignition on.

With the scan tool, read DTCs.

Is the DTC active? 

Yes 

1. Go To  2.

No 

1. 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.

Fig 1: Measuring Voltage Of Brake Transmission Shift Interlock Solenoid Unlock Circuit

Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Shift Lever Assembly harness connector.

Turn the ignition on.

Press the brake pedal.

Measure the voltage of the (K321) Brake Transmission Shift Interlock Solenoid Unlock circuit.

Does the test light illuminate brightly when the brake pedal is depressed? 

Yes 

1. Go To  3.

No 

1. Go To  4.

Fig 2: Measuring Resistance Between Ground And Ground Circuits In Shift Lever Assembly Harness Connector

Courtesy of CHRYSLER LLC

Turn the ignition off.

Using a test light connected to B+. Measure the resistance between ground and the Ground circuits in the Shift Lever Assembly harness connector.

Does the test light illuminate brightly for each circuit? 

Yes 

1. Replace the BTSI Solenoid in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .

No 

1. Repair the appropriate ground circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .

Fig 3: Measuring Voltage Of (K321) Brake Transmission Shift Interlock Solenoid Unlock Circuit

Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Cluster C4 harness connector.

Turn the ignition on.

Measure the voltage of the (K321) Brake Transmission Shift Interlock Solenoid Unlock circuit.

Does the test light illuminate brightly? 

Yes 

1. Repair the (K321) Brake Transmission Shift Interlock Solenoid Unlock circuit for a short to voltage.
2. Perform BODY VERIFICATION TEST - VER 1 .

No 

1. Go To  5.

Fig 4: Measuring Resistance Between Ground And (K321) Brake Transmission Shift Interlock Solenoid Unlock Circuit

Courtesy of CHRYSLER LLC

Turn the ignition off.

Using a test light connected to B+. Measure the resistance between ground and the (K321) Brake Transmission Shift Interlock Solenoid Unlock circuit.

Does the test light illuminate brightly? 

Yes 

1. Repair the (K321) Brake Transmission Shift Interlock Solenoid Unlock circuit for a short to ground.
2. Perform BODY VERIFICATION TEST - VER 1 .

No 

1. Go To  6.

Fig 5: Measuring Resistance Of (K321) Brake Transmission Shift Interlock Solenoid Unlock Circuit

Courtesy of CHRYSLER LLC

Measure the resistance of the (K321) Brake Transmission Shift Interlock Solenoid Unlock circuit.

Is the resistance above 10K ohms? 

Yes 

1. Repair the (K321) Brake Transmission Shift Interlock Solenoid Unlock circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .

No 

1. Replace the Cluster in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .