Test C: Abs Warning Light Flashes Constantly

Locate diagnostic connectors No. 1 and 2 in engine compartment fuse/relay block. See Fig 1 . If jumper wire is installed between diagnostic connector No. 1 ground terminal and diagnostic connector No. 2 diagnostic switch terminal, go to step 3 . If jumper wire is not installed between diagnostic connector No. 1 ground terminal and diagnostic connector No. 2 diagnostic switch terminal, go to next step.
Turn ignition on. Measure voltage between ground and diagnostic connector No. 2 diagnostic switch terminal (Violet wire). If 10-14 volts are present, substitute known-good ABS control module and repeat test. If 10-14 volts are not present, check for short to ground in Violet wire between diagnostic connector No. 2 and ABS control module. See WIRING DIAGRAMS .
Turn ignition on. If ABS warning light flashes DTC 12 or a history code, perform DTC check. See RETRIEVING DIAGNOSTIC TROUBLE CODES under DIAGNOSIS & TESTING. If ABS warning light does not flash DTC 12 or a history code, substitute a known-good ABS control module and repeat test.

Fig 1: Identifying Terminals Of Diagnostic Connector Nos. 1 & 2

Courtesy of SUZUKI OF AMERICA CORP.