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Home >> Suzuki >> 2009 >> XL7 Premium, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Lighting Systems >> Diagnostic Information and Procedures >> DTC C0297: Brake Applied Output Circuit >> Circuit/System Testing >> With LY7
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With LY7

  1. Ignition OFF, disconnect the X2 harness connector at the ECM.
  2. Connect a test lamp between the signal circuit terminal 52 and ground.
  3. Ignition ON, command the stop lamps ON and OFF by applying and releasing the brake pedal. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON, test the signal circuit for a short to voltage. If the circuit tests normal, replace the BCM.
    • If the test lamp is always OFF, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  4. Ignition OFF, connect a test lamp between the signal circuit terminal 52 at the ECM harness connector and the connector terminal at the ECM.
  5. Ignition ON, command the stop lamps ON and OFF by applying and releasing the brake pedal. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp does not illuminate ON and OFF when commanded, replace the ECM.
  6. Ignition OFF, connect the X2 harness connector at the ECM.
  7. Disconnect the harness connector at the TCM.
  8. Connect a test lamp between the signal circuit terminal 16 and ground.
  9. Ignition ON, command the stop lamps ON and OFF by applying and releasing the brake pedal. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON, test the signal circuit for a short to voltage. If the circuit tests normal, replace the BCM.
    • If the test lamp is always OFF, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  10. If all circuits test normal, replace the TCM.
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