Diagnostic Test

WARNING: This page is about a different car, the 2009 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

LOCK/UNLOCK FUNCTION
NOTE: For all RKE tests, the key must be out of the ignition.

Does the Lock/Unlock function with the interior door switches?

Yes
- Go to step 2
No
- Perform Power Lock/Unlock System diagnosis. Refer to POWER LOCKS .
RKE FUNCTION AT 20 FEET
Does the RKE Function at 20 feet?

Yes
- Go to step 3
No
- Go to step 4
RKE FUNCTION AT 100 FEET
Does the RKE Function at 100 feet?

Yes
- Test complete.
No
- Replace the antenna in accordance with the Service Information.
WCM/WIN DTCS
Does the WCM/WIN display any DTCs?

Yes
- Perform WCM/WIN diagnosis. Refer to WIRELESS CONTROL MODULE (WCM) - ELECTRICAL DIAGNOSTICS .
No
- Go to step 5
RKE FUNCTION INSIDE VEHICLE
1. Sit inside the vehicle.
2. Push the Key Fob RKE Lock/Unlock buttons.
  Does the RKE Lock/Unlock work?
  
  Yes
  - Go to step 6
  No
  - Go to step 9
ANTENNA COAX CABLE NOT PROPERLY CONNECTED
1. Pull on the Antenna COAX cable connector at the WCM/WIN.
  Did the connector come off without releasing the lock tab (not properly seated)?
  
  Yes
  - Connect Antenna
  - Go to step 2
  No
  - Go to step 7
VERIFY COAX CONNECTION AT WCM/WIN
1. Pull Antenna connector off WCM/WIN. Verify no bent pins.
  Are there any bent pins?
  
  Yes
  - Replace antenna.
  - Go to step 2
  No
  - Go to step 8
PINCHED WIRE
1. Inspect the ANTENNA Lead COAX Cable for a pinched wire.
  Has the COAX cable been pinched or damaged?
  
  Yes
  - Replace antenna.
  - Go to step 2
  No
  - Perform WCM/WIN diagnostics. Refer to WIRELESS CONTROL MODULE (WCM) - ELECTRICAL DIAGNOSTICS .
RKE FUNCTION INSIDE VEHICLE
1. Disconnect the Antenna COAX Cable lead connector to WCM/WIN.
2. Sit inside the vehicle. Push the RKE Key Fob Lock/Unlock buttons.
  Does the RKE Lock/Unlock work?
  
  Yes
  - Replace the antenna.
  No
  - Go to step 10
CHECK FOR 12 VOLTS AT WCM/WIN
1. Connect the Antenna Lead to WCM/WIN.
2. Disconnect the WCM/WIN harness connector.
3. Using the appropriate wiring diagrams, check for Fused B+ at the WCM/WIN harness connector.
  Is Fused B+ present?
  
  Yes
  - Perform WCM/WIN diagnostics. Refer to WIRELESS CONTROL MODULE (WCM) - ELECTRICAL DIAGNOSTICS .
  No
  - Repair the appropriate circuits.