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  #1  
Old 02-24-2019, 01:24 PM
jes jes is offline
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Question CHECK ENGINE, 3 codes at once?

I had the CHECK ENGINE light come on yesterday & I am seeing 3 codes

15 - Injector #2
24 - by pass air control solenoid
35 - purge control solenoid

I am baffled by 3 codes at once... we've visually checked, what we can see, and there is no obvious damage to wiring or components. Next step is with a DVM, but I'm ~350 miles away. Any advice would be appreciated.
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  #2  
Old 02-24-2019, 06:52 PM
oab_au oab_au is offline
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Re: CHECK ENGINE, 3 codes at once?

Three unrelated codes suggest to me, that there is a grounding problem with the engine to then ECU.
Check the grounding point on the passengers side of the inlet manifold, you see a lot of wires bolted there, and the grounding wire at the rear of the engine back to the bulkhead.
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Old 03-01-2019, 01:45 PM
jes jes is offline
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5 underhood ground locations.

We cleared the codes Sunday & the car was fine until last night. I found some cryptic drawings in the FSM of where the 5 underhood ground points are. Will try to match drawing under the hood...

Thought I'd share the drawings here.

bg610.png includes GB-1 GB-2
bg611.png includes GB-3 GB-4
bg612.png includes GE
Attached Images
File Type: png bg610.png (251.9 KB, 11 views)
File Type: png bg611.png (193.9 KB, 8 views)
File Type: png bg612.png (263.2 KB, 10 views)

Last edited by jes; 03-01-2019 at 01:47 PM.
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Old 03-01-2019, 04:42 PM
oab_au oab_au is offline
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Re: 5 underhood ground locations.

Quote:
Originally Posted by jes View Post
We cleared the codes Sunday & the car was fine until last night. I found some cryptic drawings in the FSM of where the 5 underhood ground points are. Will try to match drawing under the hood...

Thought I'd share the drawings here.

bg610.png includes GB-1 GB-2
bg611.png includes GB-3 GB-4
bg612.png includes GE
Did the same codes come back?
All those units ground through the same point GE in the last diagram, so that would be the most likely one to look at, remove it give it good clean and bolt it back.
The signals for all those units come through engine plug E1, its the square one of the two back there, on the RHS of the engine, might be worth seeing if that plug is plugged together firmly and clean.
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04 Liberty 30R Auto Premium. 92.000kls.
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  #5  
Old 03-02-2019, 04:20 PM
jes jes is offline
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Re: CHECK ENGINE, 3 codes at once?

light went off by itself... ground point looks like it's never been disturbed since '92.
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