Rupesy

The anti lock light just showed up on the dash. I am assuming that this means it not functioning. Are there any common problems with these or should I just go and replace the unit? Is there a way to pull a code off in case a sensor is bad or something else? I didn't find much on the forum search.

Thanks

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Jon
93 Chevy Astro EXT 218k
93 BMW 525 170k

sreve

gotta get it checked for codes. the abs control is well over $1000 and is probably not the trouble. the good news is with the light on you still have brakes just no abs.

sreve

just noticed this is a '93 codes can be checkedw\o a scan tool.

Diagnostic trouble codes (DTCs) can be read with the Tech 1 scan tool or by jumping terminal "H" to terminal "A" of the data link connector (DLC) and counting the ANTILOCK lamp flashes. The terminals must be jumped for a few seconds before the DTC will begin to flash. The ANTILOCK lamp displays DTCs similar to the SERVICE ENGINE SOON light for the fuel and emissions system.

Rupesy

Does anyone know where I can find the codes to figure out what the problem is?

__________________
Jon
93 Chevy Astro EXT 218k
93 BMW 525 170k

sreve

here ya go!

4WAL FAULT CODES
Diagnostic Trouble Code Description 21 Right Front Speed Sensor Or Circuit Open 22 Missing Right Front Speed Signal 23 Erratic Right Front Speed Sensor 25 Left Front Speed Sensor Or Circuit Open 26 Missing Left Front Speed Signal 27 Erratic Left Front Speed Sensor 29 Simultaneous Drop-Out Of Front Speed Sensors
31 Right Rear Speed Sensor Or Circuit Open 32 Missing Right Rear Speed Signal (AWD) 33 Erratic Right Rear Speed Sensor (AWD) 35 Open Or Grounded Vehicle Speed Signal Circuit (2WD/4WD) 35 Left Rear Speed Sensor Or Circuit Open (AWD) 36 Missing Vehicle Speed Sensor Signal (2WD/4WD) 36 Missing Left Rear Speed Signal (AWD) 37 Erratic Vehicle Speed Sensor Signal (2WD/4WD) 37 Erratic Left Rear Speed Sensor (AWD) 38 Wheel Speed Error 41-54 Control Valves 61, 62 Or 63 Reset Switches 65 Or 66 Open Or Shorted Pump Motor Relay 67 (1) Open Motor Circuit Or Shorted BPMV Output 68 (1) Locked Motor Or Shorted Motor Circuit 71-74 Memory Errors 81 Brake Switch Circuit Shorted Or Open 86 Shorted Anti-Lock Indicator Light 88 Shorted Brake Warning Light (1) Codes 67 and 68 use the same trouble shooting flow chart.