DTC C1781: Suspension Control ECU Malfunction [08/2019 - ]: Procedure

CHECK FOR DTC

Clear the DTC.
Refer to DTC CHECK / CLEAR [08/2019 - ]
Perform a road test.

Check for DTC.

Refer to DTC CHECK / CLEAR [08/2019 - ]

Result

Result	Proceed to
DTC is output	A
DTC is not output	B

Result:

A

REPLACE SUSPENSION CONTROL ECU. Refer to REMOVAL [08/2015 - ]

Result:

B

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - 08/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2020 - 08/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2021 - 08/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2022 - ]