Is that the one hiding below the box that has the fuses, and the relays for Fan2 and Fan1?
Could you please post instructions for how to gain access to it?
I'm asking because: The radiator fans stopped working, so the engine slowly overheats when stopped at a traffic light or caught slow moving traffic.
I tested the fan motors, the fuses, and the relays. They're all good.
I tested all the wiring against the cooling fan circuit schematic, and they're all good.
Except I haven't yet been able to test the 2 wires (dark blue and dark green) going to the PCM (pins 5 and 6) from the 3 fan relays.
The PCM uses those wires to turn the fan relays on by grounding the wires, which allows current to flow through the relay coils, turning the relay switches on.
I'm hoping it's just a bad connection, and not a failed circuit in the PCM.
Does the PCM on this engine have a known issue of failing in this manner?
Monday, August 19th, 2019 AT 1:34 PM