Navajo 2WD V6-4.0L OHV (1992)
Brake Switch (Cruise Control): Testing and Inspection
Do not use a test lamp to perform the following tests as excessive current draw will damage electronic components inside the amplifier. Use
only a high impedance digital multi-meter.
Perform this test only when brake application will not disconnect the speed control system.
Check operation of stop lamps by applying approximately 6 lbs. of pressure to brake pedal. If more than 6 lbs. is required, check brake pedal
actuation and stop lamp switch.
If stop lamps do not function properly, check bulbs, circuit fuse or stop lamp switch.
If stop lamps function properly, check for battery voltage at 6-way connector using white wire w/purple stripe.
Depress brake pedal until stop lamps are illuminated. Check voltage at light green wire. The difference between the two voltage readings must not
exceed 1.5 volts. If voltage is greater, a high resistance exists in the circuit and must be and corrected.