1. Inspect the dust boot on the drive shaft for cracks, damage, leaking grease, and looseness in the boot band.

2. Inspect the drive shaft for bends, cracks, and wear in the joint or splines.
Joint shaft disassembly/assembly
Drive shaft removal/installationMazda 6 Service Manual: No.9 tcs off light stays on more than 4 seconds with ignition switch on
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 ...
Mazda 6 Service Manual: Instrument cluster input/output check mode
Note
In this mode, it is possible to check the items in the following
chart.
Diagnostic Trouble Code Chart
Note
Diagnostic trouble codes which are not listed may be indicated,
but they cannot be inspected.
The diagnostic trouble codes are displayed in numerical order.
(While ...