8Mud
NAXJA Forum User
- Location
- Central Germany
You really have to get a wiring digram and check your ASD circuit, that dark green wire with the orange stripe.
My last major malfunction (in my 96) was a flacky connection in the ASD circuit under my dash.
Power to activate the ASD relay is a yellow wire from the key (run/start), then to ground at the ECM PCM or whatever you want to call it. The main (activated) circuit for the ASD relay is a dark green wire with an orange stripe, that runs to the coil and the alternator among other things (like the injectors), there are splices in the system. If the ASD relay is closing while the motor cranks, it's likely in the wiring, if it doesn't close while cranking, it's likely a sensor input to the ECM or in the wiring. Only one or two senors will keep the ASD relay open that I know of, the CPS or the Sync sensor (maybe, as I've never tested it myself, just heard this is true). Most other sensor failures will let the motor run, though often poorly.
Sometimes there are no shortcuts and you have to test most every wire in a harness for continuity. A systematic approach may be harder, but will likely be more successful in the long run. I often start in the middle and then work towards both ends, just my way.
My last major malfunction (in my 96) was a flacky connection in the ASD circuit under my dash.
Power to activate the ASD relay is a yellow wire from the key (run/start), then to ground at the ECM PCM or whatever you want to call it. The main (activated) circuit for the ASD relay is a dark green wire with an orange stripe, that runs to the coil and the alternator among other things (like the injectors), there are splices in the system. If the ASD relay is closing while the motor cranks, it's likely in the wiring, if it doesn't close while cranking, it's likely a sensor input to the ECM or in the wiring. Only one or two senors will keep the ASD relay open that I know of, the CPS or the Sync sensor (maybe, as I've never tested it myself, just heard this is true). Most other sensor failures will let the motor run, though often poorly.
Sometimes there are no shortcuts and you have to test most every wire in a harness for continuity. A systematic approach may be harder, but will likely be more successful in the long run. I often start in the middle and then work towards both ends, just my way.
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