B4000 SE Cab Plus 4WD V6-4.0L OHV (1997)
3. For unlock relay, check resistance between the relay terminal that connects to the B/W circuit and the relay terminal that connects to the P/O
circuit. Resistance should be less than 5 ohms.
For all lock relay, check resistance between the relay terminal that connects to the B/W circuit and the relay terminal that connects to the P/B
circuit. Resistance should be less than 5 ohms. Do door lock motors lock?
4. Energize the relay by applying 12 volts to the relay coil terminals P/LG (unlock) or P/Y (lock) and grounding the terminal that connects to the
B/W circuit.
5. The relay should click and the resistance should be less than 5 ohms.
