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Test I: Brake Pad Wear Indicator Always On

  1. Ensure front brake linings are okay. See appropriate article in BRAKES. If front brake linings are okay, go to next step.
  2. Disconnect right brake pad wear sensor harness connector. Turn ignition switch to RUN position. Measure voltage between right brake pad wear sensor harness connector terminals No. 2 (Gray/Red wire) and No. 3 (Black wire). If voltage is about 12 volts, go to next step. If voltage is not about 12 volts, go to step  4 .
  3. Measure resistance between right brake pad wear sensor terminals No. 2 and 3. If resistance is less than .5 ohm, go to step  5 . If resistance is .5 ohm or more, go to step  6 .
  4. Turn ignition switch to OFF position. Using DVOM, measure resistance between ground and right brake pad wear sensor harness connector terminal No. 3 (Black wire). If resistance is less than .5 ohm, go to step  7 . If resistance is .5 ohm or more, go to step  8 .
  5. Inspect gauge cluster harness connector for poor connections. Repair connector as necessary and go to step  9 . If connector is okay, go to step  10 .
  6. Replace right brake pad wear sensor. After repairs are made, go to step  9 .
  7. Disconnect left brake pad wear sensor harness connector. Measure resistance between left brake pad wear sensor connector (sensor side) terminals No. 2 (Yellow/Red wire) and No. 3 (Gray/Red wire). If resistance is less than .5 ohm, go to step  11 . If resistance is .5 ohm or more, go to step  12 .
  8. Repair open in Black wire between right brake pad wear sensor harness connector ground and terminal No. 3. Ground point is located under battery tray. See WIRING DIAGRAMS  . After repairs are made, go to next step.
  9. Reconnect all harness connectors and reinstall all components. Turn ignition switch to RUN position. Disconnect one brake pad wear sensor harness connector. If brake pad wear indicator turns on, system is okay.
  10. Replace gauge cluster. See GAUGE CLUSTER  under REMOVAL & INSTALLATION. After repairs are made, go to step  9 .
  11. Turn ignition switch to RUN position. Using DVOM, measure voltage between ground and left brake pad wear sensor harness connector terminal No. 2 (Yellow/Red wire). If voltage is about 12 volts, go to step  13 . If voltage is not about 12 volts, go to step  14 .
  12. Replace left brake pad wear sensor. After repairs are made, go to step  9 .
  13. Check for open in Gray/Red wire between left brake pad wear sensor harness connector terminal No. 3 and right brake pad wear sensor harness connector terminal No. 2. If problem is found, repair as necessary and go to step  9 . If no problem is found, go to step  15 .
  14. Check for open in Yellow/Red wire between left brake pad wear sensor harness connector terminal No. 2 and gauge cluster harness connector terminal No. 2. See Figure . If problem is found, repair as necessary and go to step  9 . If no problem is found, go to next step.
  15. Fault is intermittent. See PROBLEM DIAGNOSIS  under INTERMITTENTS. If problem is found, repair as necessary and go to step  9 .
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