>>>"i tested this by pulling the high tension line off the rotor, and placing it about 1/2" from the frame <<<"

1)I think 1/2" is too long to expect a big, fat spark. 1/4" is more realistic.

2) Didn't see where you've tested Fuel Injection Main relay yet. Try Cliff's idea to jumper power (from Fuse #6) to Fuse # 4. This bypasses the relay and powers both pumps directly.

3) Don't run it too long, if it runs with fuses jumpered (Fuse 4 may not like it).
If it doesn't run, go thru the Relay Ops below. Try Fuel relay ground 86-2 first. No Pulses means no Ignition signal. (This follows on Fitz's tip #4)

Please take time to read thru this. It's what I use, as brief as I can make it...

The Fuel Injection (aka "Main") relay is mounted inside, on the firewall, just above the passenger's feet. It's input voltage comes directly from the 25 Amp blade fuse near the battery.

There are actually two relays inside the case, referred to here as "Main" and "Fuel". By following the operation described below, a Test Light or meter can be used to diagnose "no start" problems. This description is based on the Bentley/Haynes wiring diagrams for the '86 — '89 240 LH 2.2, 2.4 (as are the wire color abbreviations). The FI relay is #217 in the diagrams.

The relay terminal functions also apply to the 700 series B230, but the wire colors may differ and the relay connector is not as easily accessed. Tnn means relay terminal number. The term "pick" means energized.

1. Key ON II —> Main Relay picks with +12v on T30, and Ground on T86-1, as follows:
•> +12v on T30 (R wire) from 25 Amp fuse.
•> Ground on T86-1 (Y/SB wire) from ECU #21.
••> Main Relay T87-1 now feeds +12v to ECU #9 (OR wire), and AMM #5 (OR wire)

2. Key ON III (cranking) —> Fuel Relay picks with +12v on T-85, and Ground on T-86-2, as follows:
•> +12v on T85 (R/SB wire) from (Conn. unknown), to Ignition Switch.
•> Ground on T86-2 (BL/GN wire) from ECU #17, IF ECU #1 gets Ignition pulses from Ignition CU #8.
••> Fuel Relay T 87-2 (Y/R wire) now feeds +12v to:
•——>(Conn. unknown*) to Main Pump (Y/R wire)
•——>(Conn. unknown*) to Fuse #4 (Y/R), thru fuse (Y/R) to Tank Pump
•——>Injectors (Y/R)
•——>Idle Air Control (BR)

(May be a 4-pin connector under glovebox area)

--
Bruce Young,
940-NA (current)
'80 GLE V8 (Now gone)
'83 Turbo 245
'73 142 (98K)
'71 144 (track modified--and still here)
New 144 from '67 to '78
Used '62 122 from '63 to '67