DESCRIPTION If the forward recognition camera detects a malfunction in the forward recognition with heater hood sub-assembly circuit, it will output a malfunction signal to the driving support ECU assembly via CAN communication and this DTC will be stored.
PROCEDURE
HINT: If DTC C1AAE is output by the pre-collision system, perform troubleshooting for the front camera system. Click here
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Can Communication System(for Gasoline Model): Check Bus 2 Lines for Short Circuit
DESCRIPTION There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is below 54 Ω. Symptom Trouble Area Resistance between terminals 18 (CA4H) and 17 (CA4L) of ...
