ABS Warning Lamp Flashes Continuously while Ignition Switch Is ON: Troubleshooting

TROUBLESHOOTING CHART

Step	Action	YES	NO
1	Is diagnosis switch terminal connected to ground via service wire?	Go to Step 3.	Go to Step 2.
2	Turn ignition switch to ON position. Measure voltage between "PNK" wire of diagnosis monitor coupler and ground. Is it 10 - 14 V?	Substitute a known-good ABS hydraulic unit/control module assembly and recheck.	"PNK" wire circuit shorted to ground.
3	Turn ignition switch to ON position. Does flashing of ABS warning lamp indicate DTC?	Go to Step 7 of ABS CHECK .	Substitute a known-good ABS hydraulic unit/control module assembly and recheck.