Hi everyone, with the help of many of the threads on this board I was able to resurrect a '94 850, with about 250k on it, and get nearly all the bugs worked out of it. I still need to repair the odometer gear and the very slightly leaking heater core, but I'll get to those two projects soon, and hopefully do them at the same time, assuming there's labor crossover (oh yeah, and the ABS module is giving me lights almost every day, but I'll get to that too). Anyway, I've been driving it work for a few weeks now and it's working very well, and for the first week or so I didn't even have any codes, but now I'm getting a 144 from the A6 hole. The description says something about ECM load signal absent or faulty. I'm assuming this is a code for the MAP sensor? Anyway, I'm wondering if I should just swing by the boneyard and pick up another one, or if anyone has some insight as to which way to go.

 

And now that I looked, I see it's more likely related to the MAF, since I don't see a MAP listed. Sorry for my laziness.

 

No problem. Welcome to the forum and glad to hear you have the car running.

 

Code 1-4-4 - Load signal from fuel injection absent or faulty.

1-4-4 (Load Signal From Fuel Injection System Absent/Faulty)

1) Check for codes in other systems by activating test mode

No. 1. See DIAGNOSTIC TEST MODE NO. 1 under SELF-DIAGNOSTICS. Clear

codes in ignition and fuel injection systems (if present) and test

drive car.

2) If code reoccurs, connect measuring unit to ignition ECU.

See MEASURING UNIT under SELF-DIAGNOSTIC SYSTEM. Start engine. Connect

voltmeter between measuring unit terminals No. 20 and 42. With engine

idling at normal operating temperature, approximately 50 millivolts

should be present. Voltage reading should increase with engine RPM. If

signal is present, repeat diagnostic test using different ignition

ECU.

3) If signal is not present, turn ignition off. Connect

ohmmeter between measuring unit terminals No. 20 and 42. Infinite ohms

should be present. If zero ohms are present, circuit is shorted to

ground.

4) Connect voltmeter between measuring unit terminals No. 20

and 42. Turn ignition on. If battery voltage is present, circuit is

shorted to voltage.

5) If voltage readings are okay but signal is still not

present, measure resistance in circuit between ignition ECU terminal

No. 12 and fuel injection ECU terminal No. 12 (Pink wire). If circuit

is okay but signal is still not present, repeat test using new fuel

injection ECU. Clear all codes in all other systems.

 

Wow, ok, thanks! I'll have to find the FI ECU, and go from there. The car seems to run great, so I'm not sure what the deal is, and besides the ABS codes, I cleared everything when I first started driving it, and this is the only one that's come back. I'll probably check the wiring to that ECU for obvious issues first, then clear it again and wait. I'm betting it'll be back though. Good thing a guy can still find some parts at the salvage yard, it's saved me some serious money so far. Thanks again!