I have a 91 sc that is acting up.
while driving to work the power brakes stopped working. so the car was limped home.
Tonight we checked the brakes out and the booster/ accumulator does not seem to be leaking. I changed the abs relay on the firewall and it still does not work.
During testing we noticed that a bunch of other electrical items were not working as follows:
-daytime running lights
-no heater fan but you can hear the vacuum actuators activate
-no VMM
-no rear defrost
-no signal lights
-arc system is not activating, the car had the firm light flashing before
I pulled codes for Koer, Koeo and memory and have the following
KOER
6- I can find anything in the code reader book
538-Insufficient RPM change during KOER dynamic response test
KOEO
111-system pass
212-loss of ignition diagnostic monitor signal/spout cuicuit grounded
214-cylinder identification curcuit failure
We check all the fuses under the dash and all the ones in the fuse box under the hood. The car is an automatic and the windows, mirrors, sunroof, cruise, trunk release, locks, headlight lights and hazards all work. I do not think the accumulator is the problem I think there must be an electical module failure but need help to know where to start. I have tons of parts so if swaping out items will help just give me some ideas as I am stumped and my friend would like to drive his car again.
John
while driving to work the power brakes stopped working. so the car was limped home.
Tonight we checked the brakes out and the booster/ accumulator does not seem to be leaking. I changed the abs relay on the firewall and it still does not work.
During testing we noticed that a bunch of other electrical items were not working as follows:
-daytime running lights
-no heater fan but you can hear the vacuum actuators activate
-no VMM
-no rear defrost
-no signal lights
-arc system is not activating, the car had the firm light flashing before
I pulled codes for Koer, Koeo and memory and have the following
KOER
6- I can find anything in the code reader book
538-Insufficient RPM change during KOER dynamic response test
KOEO
111-system pass
212-loss of ignition diagnostic monitor signal/spout cuicuit grounded
214-cylinder identification curcuit failure
We check all the fuses under the dash and all the ones in the fuse box under the hood. The car is an automatic and the windows, mirrors, sunroof, cruise, trunk release, locks, headlight lights and hazards all work. I do not think the accumulator is the problem I think there must be an electical module failure but need help to know where to start. I have tons of parts so if swaping out items will help just give me some ideas as I am stumped and my friend would like to drive his car again.
John
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