PART 1 of 3:
Inspect wiring and connectors before hand, Repair harness or connector as necessary. If no problems were found with wiring and connectors, wiggle harness between PCM and relay. Remove ASD relay.Substitute another relay. If substitute relay clicks, replace original ASD relay. If substitute relay does not click, remove substitute relay.
PART 2 of 3:
(Voltmeter needed) Probe ASD relay connector terminal "A", 12-volt ignition feed circuit (Dark Blue wire). If reading is 10 volts or less, repair open Dark Blue wire. If reading is more than 10 volts, disconnect PCM. Wait and move on to PART 3 of 3:
PART 3 of 3:
Probe ASD relay connector terminal "C", control circuit (Dark Blue/Yellow wire). If resistance is less than 5 ohms, repair wire for a short to ground. If reading is 5 ohms or more, check resistance of ASD relay connector control circuit (Dark Blue/Yellow wire) between PCM terminal No. 51 and ASD relay terminal "C" using an external ohmmeter. If resistance is 5 ohms or more, repair open Dark Blue/Yellow wire. If resistance is less than 5 ohms, replace PCM.
I tired to simplified it as much as possible, I hope this helps.
Let me know.