SDL Monitor

Table #2 - SDL MONITOR (VTD Functions Only):

The TECH 2 Scan Tool can be used to monitor the communications between the IPC and the PCM This mode is called "SDL" (Serial Data Link - MONITOR" on the TECH 2. Refer to TABLE #2 for a listing of Vehicle Theft Deterrent Function Descriptions. This table is broken into display pairs as the TECH 2 Scan Tool lists two function descriptions per screen.

VTD Function DESCRIPTIONS EXPLANATIONS
VTD Moding
The VTD Moding Function is "SET" once a theft decision has been made by the IPC.

Reverse Rotate
The Reverse Rotate Function tells the Powertrain Control Module when to make it's theft decision. If the function's status is "ACTIVE," the IPC has determined that the ignition key is in the "START" position; otherwise the function should read "INACTIVE." Please note, the PCM has the capability to make it's own theft decision independent of this function under certain circumstances.

VTD Password
The VTD Password function tells whether or not the IPC has sent the correct coded password to the PCM. If the IPC has read any R-CODE, it will send this password. This function will then read as "RECEIVE." This means the IPC has "received" the PASSLOCK TM Lock Cylinder's R-CODE. If the IPC could not read an R-CODE, for any reason, this function will read as "NOT RECEIVE."

Reference SYNC
The Reference Sync Function tells the IPC if the engine is physically cranking.

VTD Acknowledge
The Powertrain Control Module out of the VTD Acknowledge function if PASS-THEFT condition is present for this ignition cycle.

VTD Tamper
The Powertrain Control Module outputs the VTD Tamper function if it has determined a FAILED-THEFT condition for this ignition cycle. Note, this function may also set if the IPC has determined a fail-theft condition.