Mechanics

CHEVY ABS

1993 Chevrolet Caprice

1993 Chevy Caprice V8 Two Wheel Drive Automatic 188000 miles

Hello, I have what I believe is a Bosch 2U ABS system on my 93' Chevy Caprice. About a year ago ~175k during winter in slushy conditions I noticed the ABS light on dash coming on and the system failed to function. It started working again, but then finally failed and light is permanently on. I checked code in system and it says code 61-faulty pump motor relay or faulty pump motor. What procedure would you follow to troubleshoot the cause?-(I'm pretty handy and have a couple test meters.) Should I start by cleaning up corrosion/checking connections?


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78Olds88
November 24, 2008.



First check the anti lock relay The enable relay is located on the right side of the engine compartment, bolted to the fender apron.
Disconnect the negative battery cable.
Disconnect the electrical connection.
Remove the 1 bolt and remove the relay from the fender apron.
Also check these fuses ATO20-BP
Application: Antilock brake system pump
Note: Located behind/under dash left
ATO10-BP
Application: Antilock brake system electronic computer unit
Note: Located behind/under dash left
also clean all connections to all wheel sensors and rest if anti lock system first then check system opperation

Jnovack
Nov 24, 2008.