Quoting from the Rex/Regina (same for LH 2.0/EZK) fault tracing manual:

"In the partial load range, a load signal test is carried out twice per engine revolution. If the load signal is consistently high or low, fault code 1-4-4 is set." (Signal is from The FI Control Module to the Ignition CM.)

"Possible Fault Causes"
• Open-circuit or short-circuit to ground between the Fuel Injection CM pin #25) to the Ignition CM pin #8.
• Defective FI Control Module.
• Open-circuit in power supply to FI Control Module #9.

That last one is singled out in a 1997 Service Bulletin on the 1-4-4 code, which says:

"Poor soldering on FI System Relay* output 87/1 can cause an intermittent open-circuit in the main power supply to pin 9 at the LH 2.4 FI Control Module, which would lead to the FI module's failure to send the "load signal" from its pin #25 to pin #8 at the EZK Ignition Control Module — resulting in the 1-4-4 EZK code."

* This is the other relay found in the white case with the Fuel Pump relay. Collectively they become the "Fuel Injection Relay."

NOTE: The RSRelay is not the same as the "Relay, fuel injection (MFI)" as it's identified in the Regina Wiring Diagrams (item 2-13).




--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

Dear jerryc,

Hope you're well. You're correct to think that the reference is to the radio interference suppression relay, a.k.a. the fuel injection relay. If You have a spare, "known good" fuel pump relay, I'd make that change, simply because it is easy to do.

The "LH Module" indeed is the Engine Control Unit, usually mounted on the door-side of the passenger's footwell.

Hope this helps.

Yours faithfully,

Spook