Rear Wheel Antilock Brake System (RWAL)

This article has been updated with TSB 91-262-5

CLEARING ABS DIAGNOSTIC TROUBLE CODES
To clear any Diagnostic Trouble Code (DTC) from the memory, either to determine if the malfunction will occur again or because repair has been completed, a diagnostic scan tool may be used. Follow instructions supplied by tool manufacturer when clearing code with a diagnostic scan tool.

Some technicians may experience difficulty in clearing stored codes when using the Tech One scan tool after repairs have been performed on 4WAL systems. If this occurs, the ignition should be cycled off for 5 seconds and then technicians should attempt to clear the code(s) again. It may be necessary to cycle the ignition in this manner several times before the codes will clear. Once cleared, a function test of the system along with a road test should be made to verify that the repair was made correctly and the codes do not RESET.

NOTE: Use of the Tech One tool is highly recommended (refer to Dealer Service Bulletin 91-228-5).