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Ok, taxes are done. I looked on the bottom of my relay and the terminal designations are printed there. Just think upside down or whatever it takes to match each named terminal to the corresponding socket terminal in the relay box. Note: You may have a "Time Delay Relay" in there (P/N 9563339) for the fan relay--Relay position G in my car. These are unreliable and should be replaced with non time delay relay P/N 8522310 if that is your case. (Relay 9563339 is notorious for failing by either not working and overheating the engine or by getting stuck on and draining the battery.) Depending on which of these relays you have, the relay pins go into different positions in the relay socket. (Confusing!--The relay box can accept either relay._ My previous debugging description assumed you have the 8522310 relay If you do then just look at how that relay has its pins labeled and follow my procedure. If you have the 9563339 relay let me know and I can describe what relay socket pins correspond to my procedure.
Anyway, you need the following tools to do this type of debug (from Radio Shack or other electronics store).
- 14 AWG stranded test wire
- Crimp on spade terminals to fit your wire (male and female--get a kit with several sizes)
- Basic multimeter for measuring voltage
- Wire stripper tool
Make yourself a few test leads that have a male spade terminal crimped to a short length of wire. (Leave the other end of the wire just stripped bare on some leads and also have on lead that has another male spade terminal on its other end.) Use your test leads to interface to the desired socket terminals in the relay box (or jumper two terminals together), etc. Be sure to use the correct size spade to fit into the relay socket pins without unduly forcing the socket apart.
When measuring voltage with your multimeter be sure to do"
- Set meter to measure DC (not AC) voltage
- Have the scale (dial, button, whatever) set to accomodate at least 14 volts DC
- Always connect black meter lead to the grounded side and red to the hot side of the circuit you are measuring.
- Whatever you do, do not have the meter set to read current when measuring voltage!! (or you will short out the circuit).
- Make sure you never accidentally touch your test lead ends to each other and also be sure no test lead end over touches the metal of the car (unless that lead is meant to be grounded).
- Before handling any relay or electronic component make sure that you are not statically charged--just touch your hands to a bare metal grounded metal part of the car to discharge yourself. A static zap can ruin a piece of electronics in a heartbeat!
posted by 24.34.76...
, Fri, 11 Apr 2008 09:23:23, Fri, 11 Apr 2008 09:50:21
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