LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1989 >> Thunderbird Base >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Auto Ride Control System >> Module Input Circuit Diagnosis >> Quick Test D30 >> Brake Switch Ground
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Brake Switch Ground

Check resistance between Yellow/Black wire (circuit No. 837) at wiring harness side of brake switch connector to ground. If more than 1000 ohms, repair open or short in Yellow/Black wire. If less than 10 ohms, replace brake pressure switch.