Braking system

No.5 tcs off light does not illuminate with ignition switch on

~1min read

Diagnostic procedure


  • When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunction. If there is a problem, check to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.

Test yourself

A quick Mazda 6 quiz: every answer comes with an explanation and a link to the manual page.