POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): C1567; Error in Matching of ECUs; 2021 - 2022 MY Avalon [08/2020

Last Modified: 08-21-2023	6.11:8.1.0	Doc ID: RM100000001RDMV
Model Year Start: 2021	Model: Avalon	Prod Date Range: [08/2020 - ]
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): C1567; Error in Matching of ECUs; 2021 - 2022 MY Avalon [08/2020 - ]

DTC

C1567

Error in Matching of ECUs

DESCRIPTION

The power steering ECU (rack and pinion power steering gear assembly) determines whether an incompatible ECM, main body ECU (multiplex network body ECU) or skid control ECU (brake actuator assembly) is installed based on the identification information.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Return-to-normal Condition	Note
C1567	Error in Matching of ECUs	An incompatible ECM is detected An incompatible main body ECU (multiplex network body ECU) is detected An incompatible skid control ECU (brake actuator assembly) is detected	Incorrect ECM Incorrect main body ECU (multiplex network body ECU) Incorrect skid control ECU (brake actuator assembly) Rack and pinion power steering gear assembly	EPS warning light: Comes on	Engine switch on (IG) again	-

CAUTION / NOTICE / HINT

NOTICE:

If the rack and pinion power steering gear assembly has been replaced, perform assist map writing and torque sensor zero point calibration.

Click here

PROCEDURE

1.	CHECK RELATED PART

(a) Confirm if the related part has the correct part number.

Related Part	ECM
	Main body ECU (Multiplex network body ECU)
	Skid control ECU (Brake actuator assembly)

NOTICE:

When removing the related part to check it, be sure to follow the appropriate procedures and precautions.

ECM
for 2GR-FKS: Click here

for A25A-FKS: Click here
Main body ECU (Multiplex network body ECU)
Click here
Skid control ECU (Brake actuator assembly)
Click here

Result	Proceed to
The related part has the correct part number.	A
The related part has an incorrect part number.	B

GO TO STEP 3

2.	CHECK FOR DTC

(a) Select Health Check on the Techstream screen and check if system DTCs of the related part are output.

HINT:

If system DTCs of the related part are stored, assist map writing to the power steering ECU (rack and pinion power steering gear assembly) may not be performed properly.

Result	Proceed to
System DTCs of the related part are output.	A
System DTCs of the related part are not output.	B

REPAIR CIRCUIT INDICATED BY OUTPUT CODE

REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY

3.	REPLACE RELATED PART WITH PART THAT HAS CORRECT PART NUMBER

(a) Replace the related part with one that has the correct part number.

ECM
for 2GR-FKS: Click here

for A25A-FKS: Click here
Main body ECU (Multiplex network body ECU)
Click here
Skid control ECU (Brake actuator assembly)
Click here

4.	CHECK FOR DTC

(a) Check for DTCs.

Chassis > EMPS > Trouble Codes

Result	Proceed to
DTCs are not output.	A
DTCs are output.	B

END

REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY