Ignition switched to ON/RUN for >30 secs, fan does not run. Have tested connections to Pulse Module and confirm permanent 12v to 1A, RUN switched 12v to 2B and START 12v to 1B, and Ground on 5A. Am measuring 3.4v on the Pink/Red wire to the PCM and 0v into the Pulse Module 2A terminal.
I am assuming the Sensor Ground connection at 2A is expecting a ground from the PCM to enable start ?
I can get a 2nd hand Pulse Module from eBay for $15, I'm tempted to buy as I could then eliminate faulty PM ?
Your advice is very much appreciated.
Mick