DTC B1AEE

Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors Key Fob Motion Sensor Performance For symptom byte information, refer to Symptom Byte List. Circuit/System Description Keyless entry transmitters contain a motion sensor. The BCM monitors the type of motion that the keyless entry transmitter is experiencing and if it is a type of motion consistent with a customer starting or unlocking a vehicle then it will allow the requested function. If the BCM detects motion that is considered inconsistent with a customer starting or unlocking a vehicle then it will not allow the requested function. The purpose of this is to try to prevent unwanted detection of the keyless entry data. Conditions for Running the DTC The BCM continuously monitors for this DTC. Conditions for Setting the DTC The BCM detects the fault 10 times or more. Action Taken When the DTC Sets The service keyless start system message will display in the DIC. Passive entry and vehicle starting will be disabled. Conditions for Clearing the DTC A current DTC will be cleared when the module learns a correct environment identifier. Reference Information Schematic Reference Immobilizer Schematics Connector End View Reference Master Electrical Component List Description and Operation Immobilizer Description and Operation Electrical Information Reference Circuit Testing Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Verification

Note

All of the vehicle keyless entry transmitters that are learned to the vehicle must be present to perform the diagnostic. The total number of transmitters learned to the vehicle is available in scan tool data lists. If a transmitter is not present and is the transmitter causing the DTC to set then the DTC will return as soon as that transmitter is used.

1. Verify DTC B1AEE is not set. ⇒ If the DTC is set 1.1. Clear the DTC. 1.2. With only one transmitter inside the vehicle and all other transmitters at least 10 meters away from the vehicle, perform ten consecutive passive entry functions. For example opening and closing the driver door ten times with a 1.5 s pause between each opening. 1.3. Verify the DTC does not set. ⇒ If the DTC sets, replace the malfunctioning transmitter. ⇓ If the DTC does not set 1.4. Repeat the procedure for each additional transmitter. ⇓ If the DTC is not set
2. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. Control Module References for module replacement, programming, and setup.