Pinpoint Test Q : BTSI Transmission Shift Interlock System Does Not Release: Notes

BTSI Transmission Shift Interlock System Does Not Release 

Normal Operation and Fault Conditions 

The BCM provides battery power to the GSM. The brake transmission shift interlock override switch receives power from the GSM. When the brake transmission shift interlock override switch is held the GSM flashes indicating the vehicle is in Neutral Hold for towing purpose.

Possible Sources 

• Connectors damaged or pushed-out terminals, circuitry open, short to power
• Brake transmission shift interlock (BTSI) override switch
• GSM