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Circuit/System Testing

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 3 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 3 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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