Question: Obd-1 abs

[boomdriver]

is abs fault or codes stored or read by the OBD-1 system?
if so, then a scan of the alcl will show the fault?

 

[tmkassin]

It is on my 92. There are directions in the FSM on how to retrieve codes from both the ECM and ABS computers.

 

[vetteoz]

Not on yours ; requires a $$$ Kent Moore scanner to pull codes
On '90+ is displayed as a seperate module on the dash display when you bring the codes up

 

[Hib Halverson]

In fact, cars with ABS2 (85-89) do not have on-board diagnostics for the ABS. The ABS controller's diagnostics are "off-board" using a hand-held device, the "ABS Tester" (PN J-35890), which was built by Bosch for diagnosing the system and sold by Kent-Moore. The bad news is the tool is that, today, J-35890s are virtually nonexistent so, unless you can find one to borrow or run across an ABS Tester on eBay Motors; in a practical sense, other than the "Antilock" warning light coming on when there's a problem, any on-board diagnostic ability ABS-2 has is useless.

The good news is that most problems with ABS 2 can be solved without that device. There is an article which covers just that subject elsewhere on the CAC. See:
All About C4 Antilock Brakes and Traction Control

 

[boomdriver]

Thanks,
I appreciate the help. I had the ABS lite come on about the time the hub bearing issue came up and had hoped that the new hubs would solve the problem but it did not.