2012 Jeep Wrangler JK Factory Service Manual 29 - Non-DTC Diagnostics

Starting

REMOTE START INOPERATIVE

REMOTE START INOPERATIVE

For a complete wiring diagram, refer to the Wiring Information.



Possible Causes

REMOTE START PARAMETERS NOT MET

1. REMOTE START PARAMETERS NOT MET / FAULTY COMPONENT




Refer to the Data Display in the scan tool to view possible causes of the inoperative Remote Start System.

Repair


2.

If all of the previous items checked OK, and the remote starting system will not operate, refer to Starting - Electrical Diagnostics: REMOTE START INOPERATIVE-ANTENNA for further information.


(Refer to 29 - Non-DTC Diagnostics/Starting - Diagnosis and Testing)

REMOTE START INOPERATIVE-ANTENNA

REMOTE START INOPERATIVE-ANTENNA

For a complete wiring diagram, refer to the Wiring Information.


Theory of Operation

The customer may notice that the signal range of the Remote Keyless Entry (RKE) system is reduced. The RKE key fob may need to be closer than 3 meters (10 feet) before the functions available on the key fob will operate. This condition may be due to the RKE antenna. The diagnostic flow chart is provide as a diagnostic aid for dealer technician.


1. 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


No


2. RKE FUNCTION AT 20 FEET




Does the RKE Function at 20 feet?

Yes


No


3. RKE FUNCTION AT 100 FEET




Does the RKE Function at 100 feet?

Yes


No


4. WCM/WIN DTCS




Does the WCM/WIN display any DTCs?

Yes


No


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


No


6. 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


No


7. VERIFY COAX CONNECTION AT WCM/WIN


1. Pull Antenna connector off WCM. Verify no bent pins.


Are there any bent pins?

Yes


No


8. PINCHED WIRE


1. Inspect the ANTENNA Lead COAX Cable for a pinched wire.


Has the COAX cable been pinched or damaged?

Yes


No


9. 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


No


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


No