DTC C0089-64: TCS Off Switch: Notes

WARNING: This page is about a different car, the 2018 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

DTC C0089:64 (DSC HU/CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

DTC	C0089:64	TCS OFF Switch
DETECTION CONDITION		TCS OFF is switched ON continuously for 10 s or more is detected.
FAIL-SAFE FUNCTION		Refer to "Fail-safe function table". (See DTC TABLE (DSC HU/CONTROL MODULE) .)
POSSIBLE CAUSE		The TCS OFF switch is pressed and held for 10 s or more Short to ground circuit in wiring harness between instrument cluster terminal 1V and cluster switch terminal D TCS OFF switch malfunction Poor connection at each connector DSC HU/Control Module malfunction