No Response From Heater Booster Module

Test 1 - Test 3:

Test 4 - Test 6:

SYMPTOM
NO RESPONSE FROM HEATER BOOSTER MODULE

POSSIBLE CAUSES
- Check powers and grounds to the heater booster module
- Module - internal short to ground
- K-IC, ATC, HBM, CHM circuit shorted to ground
- Module - internal short to voltage
- K-IC, ATC, HBM, CHM circuit shorted to voltage
- K-IC, ATC, HBM, CHM circuit open
- Heater booster module