mspiegle

Subject says it all... I've found wiring schematics for the entire S4 LH unit, but nothing like this for the 86.5 (85/86?) LH unit.

I suppose I could look at the repair manual wiring diagrams and trace every sensor back to a wire on the LH, but it would be awesome if someone had a schematic of the LH itself.

Thanks!

John Speake

If you mean a diagram of the LH plug, and what each pin goes to in the car , then Rich included the daigrams in a recent thread Mike - try a search.............

mspiegle

I did a couple search queries, but didn't find exactly what I was looking for. After spending a few hours out in the garage and staring at diagrams, I came up with this:

1 - to EZK (pin 16) [black/violet?]
2 - Temperature Sensor [green]
3 - Throttle Valve Switch & EZK (pin 4) [white]
4 - to Relay Board (pin W22) [yellow]
5 - to Ground [brown]
6 - to MAF (pin 3) [grey/black]
7 - to MAF (pin 5) [grey/green] (SIGNAL?)
8 - to MAF (pin 1) [black/green]
9 - to Relay Board (pin W23) [black/white]
10 - to Idle Speed Regulator [red/blue]
11 - to Ground [brown]
12 - to EZK (pin 17) & Throttle Valve Switch [white/red] & Tester (pin B)
13 - to Injectors
14 - to MAF (pin 6) [green/red]
15 - NC
16 - to Relay Board (pin W24) [green/red]
17 - to Relay Board (pin W15) [brown/red]
18 - to Relay Board (pin W14) [black]
19 - to Low Octane Switch/EZK (pin 10) [brown] [green/black]
20 - to Oxygen Sensor [green]
21 - to Relay Panel (pin W21) [brown/white]
22 - to Tester (pin A)
23 - to Idle Speed Regulator [red/white]
24 - NC
25 - to Oxygen Sensor [brown]

I've got my SMT6 partially installed now. I can modifiy fuel injection on the fly... just need to get the ignition goods figured out.

(Search Terms: LH Jetronic 1986 1985 Plug Diagram Pinout)

Garth S

Chase through this thread to rich's post .... https://rennlist.com/forums/928-forum/163511-stalling-rough-running-928-a.html