Chart A Can't Enter Diag Mode/Anti-Lock Lamp on/No DTC

Chart A Diagnostic Mode Cannot Be Entered Or "Anti-Lock" Indicator Lamp Is On Continuously W/No Diagnostic Trouble Codes Set (part 1 Of 2):

Chart A Diagnostic Mode Cannot Be Entered Or "Anti-Lock" Indicator Lamp Is On Continuously W/No Diagnostic Trouble Codes Set (part 2 0f 2):

Chart A Diagnostic Mode Cannot Be Entered Or "Antilock" Indicator Lamp Is On Continuously With No DTC's Set:

CIRCUIT OPERATION
When the ignition is first turned to "RUN," the EBCM/EBTCM goes through a self-test lasting 2-4 seconds. During this test, the EBCM/EBTCM grounds terminal 52 causing the amber "ANTILOCK" indicator to light. This serves as an indicator bulb test.
When a low fluid condition exists, the EBCM/EBTCM turns on the amber "ANTILOCK" indicator but does not set a DTC. A low fluid level condition usually lights the red "BRAKE" indicator since the master cylinder supplies the PMV reservoir. However, restrictions or air in the hose could cause a low fluid condition in the PMV reservoir without lighting the red "BRAKE" indicator.

FAILURE CONDITIONS
Possible Causes
^ Open in CKT 1141, 800, 1451, 849 or 853.
^ Low brake fluid level or open PMV fluid level switch.
^ Short to ground in CKT 1141, 800 or 852. Wrong scan tool adapter being used.