Diagnostic Test

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 start and run.
1. Attempt to Remote Start the vehicle with the FOB.
  Does the vehicle start when using the FOB?
  
  Yes
  - At this time the Remote Start is functioning properly.
  - With the scan tool, check for any related Starting, Communication, or Ignition related DTCs that may inhibit the Remote Starting feature. Also, with the scan tool, check the BCM for any previous Remote Start Inhibit data in the BCM.
  No
  - Go To 2
REMOTE START VISUAL CHECK
1. While pressing the remote start button on the FOB, observe the exterior lights and the horn operation.
  Does the horn sound and the exterior parking lights flash?
  
  Yes
  - Go To 3
  No
  - Go To 4
CHECKING BCM INHIBITS
NOTE:
Since the horn sounds and the parking lights flash, this verifies the BCM is receiving the CAN BUS message from the RF HUB. It also verifies the RF signal for Remote Start from the FOB to the RF HUB is operating correctly.
1. With the scan tool, check the Remote Start inhibits of the BCM or any ACTIVE DTCs listed in all modules.
  NOTE:
  With the scan tool, check the BCM for any previous Remote Start Inhibit data in the BCM. The fuel level may not be a listed inhibit.
  
  NOTE:
  The last four Remote Start Inhibit events are stored. Select an event to view or select "Clear" to reset all inhibit event data.
  
  Are there any Remote Start inhibits or any ACTIVE DTCs listed in the entire vehicle?
  
  Yes
  - For any inhibits, correct the inhibit(s) that is causing the Remote Start not to work.
  - For any ACTIVE DTCs, perform the appropriate diagnostic procedure.
  No
  - Go To 4
FOB SIGNAL STRENGTH
1. Use the RF Tester 9001 to check the signal strength of the FOB.
  Does the FOB pass?
  
  Yes
  - Go To 5
  No
  - Replace the battery in the FOB with a known good battery and recheck the signal from the FOB with the RF Tester 9001.
  - Check for any related TSBs prior to replacing the FOB. If no related TSBs are found, then replace the FOB in accordance with the Service Information.
CHECK THE REMOTE START ANTENNA
1. Cycle the ignition off
2. Disconnect the Remote Start antenna from the RF Hub connector.
3. Replace the Remote Start Antenna (RSA) with a known good Antenna.
4. With the FOB, Remote Start the vehicle.
  Did the vehicle start?
  
  Yes
  - Replace the Remote Start Antenna in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST.
  No
  - Verify all power, ground, communication circuits, & connections to the RF HUB prior to replacing. Refer to MODULE, RADIO FREQUENCY (RF HUB), REMOVAL .
  - Perform the BODY VERIFICATION TEST.