Chart B "Anti-Lock" Indicator Lamp Does Not Function

Chart B "Anti-Lock" Indicator Lamp Does Not Function (part 1 Of 2):

Chart B "Anti-Lock" Indicator Lamp Does Not Function (part 2 Of 2):

Chart B "Antilock Indicator Lamp Does Not Function:

CIRCUIT OPERATION
When the ignition switch 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. The EBCM/EBTCM also grounds terminal 34, energizing the main relay. This removes the indicator ground path provided through the antilock diode and the main relay contacts.
When the self-test is completed (and no faults detected) the EBCM/EBTCM removes the ground at terminal 52, turning off the indicator. The main relay remains energized.
When the EBCM/EBTCM detects a fault, it grounds terminal 52 causing the amber "ANTILOCK" indicator to light. (Note: The EBCM/EBTCM also de-energizes the main relay creating a redundant ground path.)
When the EBCM/EBTCM is disabled for any reason (i.e. open "ABS" fuse), the main relay is de-energized. This provides an "ANTILOCK" indicator ground path through the anti lock diode and main relay contacts, and causes the indicator to light with no DTC being set.

FAILURE CONDITIONS
Possible Causes
^ Open in CKT 1451, 852 or 1633.
^ Open bulb.
^ Short to voltage in CKT 852.
^ Open or shorted antilock diode.
^ Main relay fails "engaged."
^ Short to ground in CKT 1632.