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Home >> Toyota >> 2004 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 185 (Body Control System) >> Circuit Tests >> Parking Brake Switch Circuit >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If not using the hand-held tester, start the inspection from step  2.
  1. Check the parking brake switch using the hand-held tester. Connect the hand-held tester DLC3. Check the parking brake switch using DATA LIST. If the results are OK, perform the next test procedure of the problem symptom. See step  4 of the SYSTEM OPERATION CHECK under TROUBLE SHOOTING. If the results are not good, go to the next step.
  2. Check the parking brake switch. See INSTRUMENT PANEL article in ACCESSORIES & EQUIPMENT. If the results are OK, go to the next step. If the results are not good, repair or replace the wiring harness or connector.
  3. Check the wiring harness and connector between the parking brake switch and body ECU. If the results are OK, perform the next test procedure of the problem symptom. See step  4 of the SYSTEM OPERATION CHECK under TROUBLE SHOOTING. If the results are not good, repair or replace wiring harness or connector.
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