Diagnostic Test

WARNING: This page is about a different car, the 2020 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC

NOTE:

Verify that the key fob in use is the key fob causing the DTC to set.

NOTE:

On the Passive Entry Keyless Go (PEKG)/Keyless Ignition Node (KIN) system, using the rounded end of the key fob to press the Start/Stop button can cycle the ignition even if the battery in the key fob is inoperative or there is a failure with the Low Frequency (LF) Antennas.

Turn the ignition on.
With the scan tool, read RF Hub DTCs and record on the repair order.
With the scan tool, erase DTCs.
From inside the vehicle, operate the alleged inoperative key fob in all positions several times.
With the scan tool, read RF Hub DTCs.
Is the DTC active?

Yes
- Replace the key fob battery and operate the key fob in all positions.
  If the DTC is still present after erasing the DTC and using the key fob, replace and program the key fob.
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 and repair as necessary. If no problems are found, test complete.