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Home >> Cadillac >> 2006 >> STS Base, 4.6 A, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 221 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B0000 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2007 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Diagnose any ABS related DTCs before attempting this diagnostic
  1. Ignition OFF, disconnect the EBCM harness connector and C4 radio harness connector.
  2. Test for less than 1 volt between the EBCM harness connector terminal A10 and radio harness connector C4 terminal 5.
    • If greater than specified value repair short to voltage.
  3. Test for infinite resistance between the radio harness connector C4 terminal 5 and ground.
    • If less than specified value repair short to ground.
  4. Test for less than 1 ohm between the EBCM harness connector terminal A10 and radio harness connector C4 terminal 5.
    • If greater than specified value repair open circuit.
  5. If all circuits test normal, replace the EBCM.
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