Diagnostic Routine C

Diagnostic Routine C

Diagnostic Overview

B10D9:87

Refer to Wiring Diagram Set 112, Passive Anti-Theft System for schematic and connector information. Diagrams By Number

Normal Operations and Fault Conditions

The BCM (Body Control Module) supplies voltage to the PATS (Passive Anti-Theft System) transceiver. When the ignition is turned to the RUN or START position, the BCM (Body Control Module) initiates the key interrogation sequence. The BCM (Body Control Module) starts the interrogation sequence by generating a signal and sending that signal to the transceiver on the transmit (TX) circuit. When the transceiver receives the signal from the BCM (Body Control Module), it reads the PATS (Passive Anti-Theft System) key and generates a challenge response to the BCM (Body Control Module) signal. The transceiver sends the challenge response back to the BCM (Body Control Module) on the receive (RX) circuit.

DTC Fault Trigger Conditions






Visual Inspection and Diagnostic Pre-checks

BCM (Body Control Module) fuse 18 (10A)

To ensure the most accurate service information, portions of this procedure are under development and may not be immediately available at vehicle introduction.