ABS Indicator On No DTC Set

CIRCUIT DESCRIPTION
When the ignition is first turned to RUN, the EBCM/EBTCM goes through a self-test which lasts 2 to 4 seconds.

During the test, the EBCM/EBTCM grounds terminal 52. This causes the amber ANTILOCK indicator to light. This serves as an indicator bulb test.

When the fluid is low, the EBCM/EBTCM turns ON the amber ANTILOCK and TRACTION OFF indicators. The EBCM/EBTCM does not set a DTC.

A low fluid level condition usually lights the red BRAKE warning lamp, since the master cylinder supplies the BPMV reservoir. However, restrictions or air in the hose could cause a low fluid condition in the BPMV reservoir without lighting the red BRAKE warning lamp.

DIAGNOSTIC AIDS
The following conditions may cause the ANTILOCK indicator to be on with no DTCs set:
^ An open in any of the following circuits:
- CKT 441
- CKT 800
- CKT 1451
- CKT 849
- CKT 853
^ A low brake fluid level
^ An open BPMV fluid level switch circuit
^ A short to ground in any of the following circuits:
- CKT 441
- CKT 800
- CKT 852

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ABS INDICATOR ON NO DTC SET