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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Starting - Non-DTC Based Diagnostics >> Diagnosis And Testing >> Remote Start Inoperative (TIPM - WCM Equipped) >> Diagnostic Test

Diagnostic Test

  1. REMOTE START FUNCTION 
    NOTE:

    In some cases the vehicle will start then stall, indicating a fuel level concern (less than a quarter of a tank). Before proceeding verify there is enough fuel in the tank for the vehicle to run.

    1. Use the FOB to start the vehicle.

      Does the vehicle start when using the FOB?

      Yes 

      • At this time the Remote Start is functioning properly. Check for any related Starting, Communication, or Ignition related DTCs that may inhibit the Remote Starting feature. Check the TIPM for any previous Remote Start Inhibits and mileage that were stored. Inhibits may be found under the system tests or miscellaneous functions tab.

      No 

      • Go To  2
  2. REMOTE START VISUAL ASSESSMENT 
    1. When the FOB buttons are pressed for Remote Start usage the Horn should sound and the exterior parking lights should flash.

      Does the horn sound and the exterior parking lights flash?

      Yes 

      • Go To  3

      No 

      • Go To  4
  3. CHECKING TIPM INHIBITS 
    NOTE:

    Since the horn sounds and the parking lights flash, this verifies the TIPM is receiving the CAN BUS message from the WCM. It also verifies the RF signal for Remote Start from the FOB to the WCM is operating correctly.

    1. Using the scan tool, check the Remote Start inhibits of the TIPM or any ACTIVE DTCs listed in all modules.
      NOTE:

      Inhibits may be found under the system tests or miscellaneous functions tab. The fuel level may not be a listed inhibit.

      Are there any Remote Start inhibits or any ACTIVE DTCs listed in the entire vehicle?

      Yes 

      • Refer to DIAGNOSIS AND TESTING for a complete list of Remote Start inhibits.
      • For any ACTIVE DTCs perform the appropriate diagnostic procedure in DTC INDEX .

      No 

  4. RKE FUNCTION SHORT RANGE 
    1. Standing next to the Driver door, note the RKE function of the FOB?

      Does the RKE function?

      Yes 

      • Go To  5

      No 

      • Go To  7
  5. RKE FUNCTION MID RANGE 
    1. Standing 20 feet from the vehicle, operate the RKE function of the FOB.

      Does the RKE function at 20 feet?

      Yes 

      • Go To  6

      No 

      • Go To  7
  6. RKE FUNCTION LONG RANGE 
    1. Standing 100 feet from the vehicle, operate the RKE function of the FOB.

      Does the RKE Function at 100 feet?

      Yes 

      • Go To  9

      No 

      • Go To  7
  7. FOB SIGNAL STRENGTH 
    1. Use the RF Tester 9001 to check the signal strength of the FOB.

      Does the FOB pass?

      Yes 

      • Go To  10

      No 

      • Go To  8
  8. CHECKING THE FOB 
    1. Replace the battery in the FOB with a known good battery and recheck the signal from the FOB with the RF Tester 9001.

      Does the FOBs pass?

      Yes 

      • Go To  9

      No 

  9. CHECKING FOR ACTIVE DTCs 
    NOTE:

    Since the RKE portion of the FOB is operational, it verifies that the WCM is capable of receiving signals and communicating to operate the locks.

    1. Use the scan tool to check for ACTIVE DTCs.

      Did the diagnostic scan tool show any ACTIVE DTCs in the entire vehicle

      Yes 

      • Diagnose the DTCs in accordance with Service Information before proceeding with the Remote Start Inoperative concern.

      No 

      • Go To  10
  10. CHECKING THE WCM 
    NOTE:

    Even though the RKE function of the system may work with no concern, the TIPM is either not receiving a message or is receiving a corrupt message from the WCM for the remote start operation.

    1. While sitting in the driver's seat and using the scan tool, monitor the WCM on the data display screen for changes when the Remote Start button of the FOBs is pressed.

      Did the status change when the Remote Start button of the FOB is pressed?

      Yes 

      • Go To  11

      No 

      • Disconnect the Remote Start antenna. With the FOB next to the WCM attempt to start the vehicle and monitor the scan tool for a change in the status. If the status changes or the vehicle starts replace the Remote Start antenna. If there is no change in the status, check for any related TSBs. If no related TSBs are found, then replace the WCM in accordance with Service Information. Refer to MODULE, SENTRY KEY IMMOBILIZER (SKREEM), REMOVAL .
  11. CHECKING TIPM INHIBITS 
    NOTE:

    Since neither the parking lights flash nor will the horn will sound when the FOB is used, it is not known if the TIPM is the concern or if an "Inhibit" may be stopping the request from taking place.

    1. Use the diagnostic scan tool to check for any Remote Start inhibits listed in the TIPM. This may be found under the system tests or miscellaneous functions tab.

      Were there any Remote Start Inhibits listed in the TIPM?

      Yes 

      No 

      • If, this has had a Mopar® Accessory kit installed verify the correct Sales Code for Remote Start has been added to Dealer Connect and a Restore Vehicle Configuration has been performed. Confirm the system is enabled; and the temporary Remote Start override is set to disabled in the TIPM and contact the Mopar® Accessories group (800-84-Mopar) for further details before proceeding.
      • If, this has a factory installed Remote Start check for any related TSBs prior to replacing the TIPM. If no related TSBs are found, then replace the TIPM in accordance with Service Information. Refer to MODULE, TOTALLY INTEGRATED POWER (TIPM), REMOVAL .
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