The original harness was cut up and chewed up from previous owner testing and from rat damage. I replaced the entire harness and the IPDM from a junkyard salvage. I get power and grounds to all connections in the ECU ports except port 119 and 120 which turn on the ECU. I'm getting 0.30volts not exactly 0 volts. Is this a short? Port 109 is getting battery voltage from the ignition switch which I traced back.
I checked continuity from several wires going into the IPDM and I'm getting a continuity beep from a lot of wiring. The headlight, fog light, ac compressor, wipers, all are showing continuity to ground. What is going on here? Do they share a same power source that is shorting?
I am lost with this and frustrated after chasing wires for several hours and rereading power diagrams. Any help is needed.
I checked continuity from several wires going into the IPDM and I'm getting a continuity beep from a lot of wiring. The headlight, fog light, ac compressor, wipers, all are showing continuity to ground. What is going on here? Do they share a same power source that is shorting?
I am lost with this and frustrated after chasing wires for several hours and rereading power diagrams. Any help is needed.
Oct 14, 2025 at 8:56 PM
