What is this plug?
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Posting Guru
Joined: Apr 2012
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From: Menifee, CA
But I do notice that it is the aqua green color of the O2 sensor plugs.
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Posting Guru
Joined: Apr 2012
Posts: 1,693
Likes: 3
From: Menifee, CA
Just a part number. I'm curious what it's for. Like I said, its got that aqua/teal color. And on my truck, only emissions plugs have that.
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
It is C1003. Used for the HO2S on some trucks but not used on your truck.
The power wire in it is powered by the PCM power relay (361 R) on some trucks and by a fuse on other trucks. The plug also has sensor ground wire (359 GY/R) and may also have the computer 74 and 387 for HO2S sensor and power control wires.
The power wire in it is powered by the PCM power relay (361 R) on some trucks and by a fuse on other trucks. The plug also has sensor ground wire (359 GY/R) and may also have the computer 74 and 387 for HO2S sensor and power control wires.
Thread Starter
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Posting Guru
Joined: Apr 2012
Posts: 1,693
Likes: 3
From: Menifee, CA
It is C1003. Used for the HO2S on some trucks but not used on your truck.
The power wire in it is powered by the PCM power relay (361 R) on some trucks and by a fuse on other trucks. The plug also has sensor ground wire (359 GY/R) and may also have the computer 74 and 387 for HO2S sensor and power control wires.
The power wire in it is powered by the PCM power relay (361 R) on some trucks and by a fuse on other trucks. The plug also has sensor ground wire (359 GY/R) and may also have the computer 74 and 387 for HO2S sensor and power control wires.
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Fleet Owner
Joined: Aug 2005
Posts: 23,668
Likes: 301
From: Easton,Ks
I have no idea. The C1003 plug appears in several configuration in the 1996 wiring diagrams.
As I noted above it may be powered by a fuse or the PCM Power relay. The will be a ground wire in it and more than likely two other wires that end someplace before getting to the PCM Computer. There is not much information on a not used plug.
As I noted above it may be powered by a fuse or the PCM Power relay. The will be a ground wire in it and more than likely two other wires that end someplace before getting to the PCM Computer. There is not much information on a not used plug.
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