So you have a 96 with the optional fan kit and the fan doesn’t work and your hot light won’t come on? Yes that happened to me.
First the alarm unit and the fan control are two separate units; unfortunately neither is available new. The fan control relay is bigger than the alarm unit. If you don’t have a fan then you don’t have an FCU, you have alarm unit.
If you followed the troubleshooting section, you’ll Ground out the oil temp sensor lead and do so continuity checks on the harness leading to the FCU.
I found both my temp sensor and FCU failed the checks. I Bought a used part (labeled as a 38710-hc5-971) to finally get the light to work–sadly this part would not get the fan to come on. I don’t know why so I hardwired it to a switch powered by the accessory circuit.
Ok the parts diagram shows 38710-hc5-971 as the FCU in the cooling fan IPB–my FCU is larger than the used part I purchased (shown in pic) And the harness is upside down so you have to roll it over to plug it in. I don’t know if I have the right part.
Ok gee I’m finally done editing this reply SMH
here’s the part number 38710-hc5-971 can you get one of these for me?