Test No. 17: Brake System Warning Light Stays On With Parking Brake Released & Brake Fluid Above Min
WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
- Remove driver's front scuff plate. Remove driver's kick panel. Remove CPU from joint box. Turn ignition on. If BRAKE warning light illuminates, go to step 4 . If BRAKE warning light does not illuminate, go to next step.
- Remove rear console. Disconnect parking brake switch connector. Release parking brake. Check for continuity between ground and parking brake switch terminal. If continuity exists, replace parking brake switch. If continuity does not exist, go to next step.
- Check for continuity between ground and joint box terminal 1P. See Figure . If continuity exists, repair wiring between CPU and parking brake switch. See WIRING DIAGRAMS . If continuity does not exist, replace CPU.
- Remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Check for continuity between ground and instrument cluster harness connector No. 3, terminal 3L. See Figure . If continuity exists, repair wiring between instrument cluster and CPU. If continuity does not exist, go to next step.
- Disconnect brake fluid level sensor connector. Check for continuity between ground and instrument cluster harness connector No. 3, terminal 3L. If continuity exists, repair wiring between instrument cluster and brake fluid level sensor. If continuity does not exist, replace printed circuit. See PRINTED CIRCUIT under REMOVAL & INSTALLATION.