Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001H08K
Model Year Start: 2020 Model: Corolla Hatchback Prod Date Range: [01/2019 - 09/2022]
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for M20A-FKS): U040181; Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received; 2020 - 2022 MY Corolla Corolla Hatchback [01/2019 - 09/2022]

DTC

U040181

Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received

DESCRIPTION

If the ECM cannot recognize the forward recognition camera. DTC U040181 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

DTC Output from

U040181

Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received

Approximately 17 seconds or more after the ignition switch is turned ON, the ECM cannot recognize the forward recognition camera for approximately 2 seconds or more.

ECM

Does not come on

Radar Cruise2

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the ECM, refer to Registration.

w/o Smart Key System: Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION 2021 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [04/2020 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION

w/ Smart Key System: Click here 2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION 2020 MY Corolla Corolla Hatchback GR Corolla [09/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION 2021 - 2022 MY Corolla Corolla Hatchback GR Corolla [04/2020 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

PROCEDURE

1.

CHECK FOR DTCs

(a) Clear the DTCs.

Powertrain > Radar Cruise2 > Clear DTCs

(b) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

(c) Check for DTCs.

Powertrain > Radar Cruise2 > Trouble Codes

Result

Proceed to

DTC U040181 is not output

A

DTC U040181 is output

B
A

USE SIMULATION METHOD TO CHECK

B

REPLACE ECM