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Test TC-152A - Brake Switch Sense Circuit

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION DIRECTORY  . For wiring diagram, see WIRING DIAGRAMS - 2.4L article.
  1. Ensure ignition is off. Disconnect connector at brake switch, located near brake pedal. Turn ignition on.
  2. Using scan tool in voltmeter mode, check voltage at terminal No. 1 (White/Pink wire) on connector for brake switch. If voltage is 9 volts or less, go to step 5). If voltage is more than 9 volts, go to next step.
  3. Using scan tool in ohmmeter mode, check resistance at terminal No. 2 (Black wire) on connector for brake switch. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open circuit in Black wire. Perform TEST VER-2A.
  4. Connect jumper wire between terminals No. 1 (White/Pink wire) and 2 (Black wire) on connector for brake switch while using scan tool to monitor brake switch status. If brake switch status changes from pressed to released, replace or adjust brake switch. Perform TEST VER-2A. If brake switch status does not change from pressed to released, replace Powertrain Control Module (PCM). Perform TEST VER-2A.
  5. Ensure ignition is off. Disconnect connectors from Powertrain Control Module (PCM). The PCM is located between driver's side front fender and power distribution center, near battery.
  6. Inspect connectors for miswired or damaged terminals. If connectors are miswired or terminals are damaged, repair as necessary. Perform TEST VER-2A. If connectors are not miswired or terminals are not damaged, go to next step.
  7. Using scan tool in ohmmeter mode, check resistance at terminal No. 1 (White/Pink wire) on connector for brake switch. If resistance is less than 5 ohms, repair short to ground in White/Pink wire between PCM and brake switch. Perform TEST VER-2A. If resistance is 5 ohms or more, go to next step.
  8. Using external ohmmeter, check resistance between terminal No. 1 (White/Pink wire) on connector for brake switch and PCM connector terminal No. 62 (White/Pink wire). If resistance is 5 ohms or more, repair open circuit in White/Pink wire between PCM and brake switch. Perform TEST VER-2A. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2A.
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