Begin by locating the vehicle’s power module–specifically pin A7 on the 12-pin connector. This terminal supplies ignition-switched voltage (typically 8–12 V) required for the solenoid pack logic circuit. Failure.

Begin troubleshooting by verifying pin assignments on the 12-pin connector. Pin 8 delivers 12V ignition power; ensure voltage stability at 11.8V–14.2V under load. Pin 5 carries sensor ground–confirm continuity.

Start with the main control module connector–locate the 13-pin rectangular plug (usually black or dark gray). Pin 12 carries the vehicle speed sensor signal (VSS) and must be wired.