Firebird V8-350 5.7L VIN P SFI (1996)
The BCM provides an output on circuit 1376 to the Security L.E.D. (if installed), (see Attachment 14).
DTC Will Set When
Battery is applied to the BCM through connector C2 and the BCM "sees" an L.E.D. circuit through connector C3 terminal "C16". The presence of the
L.E.D. connected through connector C3 at the time of battery connection (connection C2) is required for proper UTD operation. If the L.E.D. is present
on the vehicle and DTCs 25/35 are not indicated, verify continuity of circuit 1376 and circuit 650. Check for proper connections at BCM connector C3
and at the L.E.D., then disconnect and reconnect connector C2 to the BCM.
Notice:
Do not use battery or test light to test Theft Deterrent Security L.E.D. Failure to follow proper test procedures will damage the L.E.D.
Important:
Ignore DTCs 25/35 on vehicles not equipped with (UA6) Universal Theft Deterrent System.
DTC 41 - Last Transmitter Message Received Valid (W/ AU0 Only)
Remote Control Door Lock Transmitter DTCs
Important:
DTCs 41 through 45 will set only while the BCM is in the Diagnostic Mode, and a button on the Remote Control Door Lock Transmitter has been
pressed. These DTCs are used to determine the RF performance of the Remote Control Door Lock Transmitter and the receiver inside the BCM.
Malfunction/Condition
The digital RF message received from the Remote Control Door Lock Transmitter was valid, all security checks passed. No malfunction.
Operational Effects
Correct Remote Control Door Lock Transmitter functionality should be observed (i.e., Lock, Unlock, etc.).
Potential Causes
If a Remote Control Door Lock Transmitter digital RF message is sent, but a DTC 41 is not set (or any other DTC 42-45), then the Remote Control Door
Lock Transmitter may be defective. If Remote Control Door Lock Transmitter digital RF message is sent and DTC 41 is set, but the corresponding
function does not take place, the BCM or harness may be defective.
Comments
None.
DTC 42 - Last Transmitter Message Received Had Invalid ID