1997 Cadillac Eldorado BaseFACTORY OEM SERVICE PROCEDURE

DTC C1295: BRAKELIGHT Switch Circuit Open

  1. Perform diagnostic system check. See DIAGNOSTIC SYSTEM CHECK . After performing diagnostic system check, go to next step.
  2. Press brake pedal. If brake lights illuminate, go to next step. If brake lights do not illuminate, go to step 6).
  3. Turn ignition off. Disconnect EBTCM connector. Connect Pinout Box (J-39700) and Bosch Adapter Cable (J-39700-25) to harness connector. Turn ignition on, with engine off. Using DVOM, measure voltage at pinout box terminal No. 9 while an assistant presses brake pedal. If battery voltage is present, go to next step. If battery voltage is not present, go to step 5).
  4. Replace EBTCM. After repairs, perform DIAGNOSTIC SYSTEM CHECK .
  5. Repair open in Light Blue wire between brakelight switch and EBTCM. After repairs, perform DIAGNOSTIC SYSTEM CHECK .
  6. Check 20-amp FUSE 85-STOP fuse in engine compartment fuse/relay center. If fuse is blown, go to step 11). If fuse is okay, go to next step.
  7. Disconnect brakelight switch connector. Using DVOM, measure voltage at terminal "A" (Orange wire) of brakelight switch connector. See WIRING DIAGRAM . If battery voltage is present, go to step 9). If battery voltage is not present, go to next step.
  8. Repair open in Orange wire between fuse and brakelight switch. After repairs, perform DIAGNOSTIC SYSTEM CHECK .
  9. Connect a fused jumper between terminals of brakelight switch connector. If brake lights illuminate, go to next step. If brake lights do not illuminate, go to step 5).
  10. Adjust or repair brakelight switch as necessary. See BRAKE SYSTEM article. After repairs, perform DIAGNOSTIC SYSTEM CHECK.
  11. Install new fuse. Do not press brake pedal. Check new fuse. If fuse is blown, go to next step. If fuse is okay, go to step 13).
  12. Repair short to ground in Orange wire between fuse and brakelight switch. After repairs, perform DIAGNOSTIC SYSTEM CHECK .
  13. Press brake pedal. Check fuse. If fuse is blown, go to next step. If fuse is okay, perform DIAGNOSTIC SYSTEM CHECK .
  14. Turn ignition off. Disconnect EBTCM connector. Turn ignition on, with engine off. Press brake pedal. Check fuse. If fuse is blown, go to next step. If fuse is okay, go to step 4).
  15. Repair short to ground in Light Blue wire between brakelight switch and EBTCM. After repairs, perform DIAGNOSTIC SYSTEM CHECK .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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