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Power Source Mode does not Change to ON (ACC) [08/2019 - ]: Procedure

CHECK FOR DTC

Using the Techstream, check for certification ECU (smart key ECU assembly) DTCs.

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

Result

Result	Proceed to
DTCs are not output	A
Smart key system (for Start Function) DTCs are output	B

Result:

B

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 08/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2021 - 08/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2022 - ]

Result:

A

See step 2

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
See step 3

Result

Proceed to

OK

NG

Result:

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

OK

See step 3
INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY (ACC RELAY)
See step 4

Result

Proceed to

OK

NG

Result:

NG

REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY. Refer to REMOVAL [08/2019 - ]

Result:

OK

See step 4
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
See step 5

Result

Proceed to

OK

NG

Result:

OK

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ]

Result:

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL [08/2019 - ]