Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Driving Support ECU (C1A01)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Engine / Cruise Control / Lane Departure Alert System (w/ Steering Control)(for Gasoline Model) / Driving Support ECU (C1A01)

DESCRIPTION

If the forward recognition camera detects a malfunction in the internal circuit of the driving support ECU assembly, DTC C1A01 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A01

Driving Support ECU

2 seconds after the engine switch is turned on (IG), a malfunction in the driving support ECU assembly internal circuit is detected for 5 seconds or more.

Driving support ECU assembly

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.
  • The lane departure alert system (w/ steering control) uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.

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PROCEDURE

1.

REPLACE DRIVING SUPPORT ECU ASSEMBLY

(a) Replace the driving support ECU assembly.

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END
    Lane Departure Alert System (w/ Steering Control)(for Gasoline Model)

    Front Radar Sensor (C1A10)

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