DTC C0023-62; C0040-64: Error Detected In Signal From Rear Body Control Module Via Can Communication: Notes

DTC	C0023:62	Brake switch
	C0040:64
DETECTION CONDITION		C0023:62 Brake light signal cannot be detected even though brake light signal is requested by DSC CU/HM. Error detected in signal from rear body control module via CAN communication. C0040:64 Accelerator pedal is depressed and brake switch on condition continues for 30 to 60 s while vehicle is driven at 10.8 km/h {6.71 mph} or more. A brake switch ON signal is not input when the brake fluid pressure sensor signal reaches the specified value.
FAIL-SAFE FUNCTION		Refer to "Fail-safe function table". (See DTC TABLE [DSC HU/CM] .)
POSSIBLE CAUSE		Without Smart Brake Support (SBS)/With Smart City Brake Support (SBCS) Brake switch malfunction Open or short circuit in wiring harness between brake switch terminal D and brake light relay terminal B Brake light relay malfunction Open or short circuit in wiring harness between brake light relay terminal D and DSC HU/CM terminal O Rear body control module malfunction Poor connection at each connector DSC HU/CM malfunction With Smart Brake Support (SBS) Brake switch malfunction Open or short circuit in wiring harness between brake switch terminal D and brake light unit terminal I Open or short circuit in wiring harness between brake light unit terminal H and DSC HU/CM terminal O Brake light unit malfunction Poor connection at each connector DSC HU/CM malfunction
Without Smart Brake Support (SBS)/With Smart City Brake Support (SCBS)

With Smart Brake Support (SBS)