DESCRIPTION When a stop light relay circuit malfunction signal sent from the electronically controlled brake system is detected by the clearance warning ECU assembly, DTC C1A4B is stored.
CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Using the Techstream, check for DTCs according to the prompts on the screen. HINT: After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs. Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes(b) Clear the DTCs according to the screen on the Techstream. Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs(c) Recheck for DTCs. Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble CodesHINT:
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: Internal Control Module Monitoring Processor Performance Watchdog/Safety MCU Failure (P060A47)
MONITOR DESCRIPTION The main CPU and sub CPU of the ECM perform data communication between each other. The main CPU monitors the communications and WDC pulses from the sub CPU. When the signal malfunctions below are detected, this DTC is stored. DTC No. Detection Item DTC Detection Condition Trouble ...