Diagnostic Test

WARNING: This page is about a different car, the 2014 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. With the scan tool, read the active DTCs.
  Does the scan tool display this DTC as 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 chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
VERIFY THE BCM IS ACTIVE ON THE CAN BUS
1. With the scan tool, select ECU View.
2. Verify that the BCM is active on the bus.
  Is the BCM active on the bus?
  
  Yes
  - Replace the Integrated Center Stack (ICS) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Refer to DIAGNOSIS AND TESTING and perform the NO RESPONSE FROM BCM diagnostic procedure.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .