Circuit/System Verification

Without BTM and/or ATH/ATS

1. Ignition ON.
2. Verify that DTC B1370, B1380, or B1441 is not set.
   • If any of the DTCs are set 

     Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

   • If none of the DTCs are set 
3. Verify the scan tool body control module Accessory parameter changes between Active and Inactive when turning the ignition ON and OFF.
   • If the parameter does not change 

     Refer to Vehicle Will Not Change Power Mode .

   • If the parameter changes 
4. Verify all available keys are correct for the vehicle. This can be accomplished by comparing the part number that is laser etched on the key to the part number listed in the parts catalog.
   • If a key is not correct 

     Replace the appropriate key.

   • If all keys are correct 
5. Verify that DTC B3055 does not set while attempting to start the vehicle which each available key.
   • If DTC B3055 sets when attempting to start the vehicle with only one of the available keys 

     Replace the appropriate key.

   • If DTC B3055 sets when attempting to start the vehicle with all of the available keys 

     Replace the K89 Immobilizer Control Module.

   • If DTC B3055 does not set 
6. All OK.

With BTM and/or ATH/ATS

1. Ignition ON.
2. Verify that DTC B1370, B1380, or B1441 is not set.
   • If any of the DTCs are set 

     Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

   • If none of the DTCs are set 
3. Verify the scan tool body control module Accessory parameter changes between Active and Inactive when turning the ignition ON and OFF.
   • If the parameter does not change 

     Refer to Power Mode Mismatch .

   • If the parameter changes 
4. Verify all available keys are correct for the vehicle. This can be accomplished by comparing the part number that is laser etched on the key to the part number listed in the parts catalog.
   • If a key is not correct 

     Replace the appropriate key.

   • If all keys are correct 
5. Remove the battery from each of the available vehicle keys.
6. Verify that DTC B3055 does not set while attempting to start the vehicle which each available key. To start the vehicle with the key battery removed, the key must be placed in the key pocket/slot.
   • If DTC B3055 sets when attempting to start the vehicle with only one of the available keys 

     Replace the appropriate key.

   • If DTC B3055 sets when attempting to start the vehicle with all of the available keys 

     Replace the K89 Immobilizer Control Module.

   • If DTC B3055 does not set 
7. All OK.