Pinpoint Test C : B10D9:87: Notes
Diagnostic Overview
B10D9:87
Refer to PASSIVE ANTI-THEFT SYSTEM for schematic and connector information.
Normal Operations and Fault Conditions
The BCM supplies voltage to the PATS transceiver. When the ignition is turned to the RUN or START position, the BCM initiates the key interrogation sequence. The BCM 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, it reads the PATS key and generates a challenge response to the BCM signal. The transceiver sends the challenge response back to the BCM on the receive (RX) circuit.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B10D9:87 | PATS Transponder: Missing Message | Set by the BCM when it does not receive a response from the PATS transceiver. |
Visual Inspection and Diagnostic Pre-checks
- BCM fuse 18 (10A).