Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000027Y4V
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: ADVANCED DRIVER ASSISTANCE SYSTEM: FRONT RADAR SENSOR SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

  • Before performing troubleshooting for the front radar sensor system, perform troubleshooting for the front camera system.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: FRONT CAMERA SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

  • *: Use the GTS.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
NEXT

2.

PRE-CHECK

(a) Measure the auxiliary battery voltage with the ignition switch off.

Standard voltage:

11 to 14 V

HINT:

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

NEXT

3.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the GTS, check for CAN communication system DTCs.

for Gasoline Model: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 03/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2023 MY Corolla Corolla Hatchback GR Corolla [03/2023 - 08/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2024 - 2025 MY Corolla Corolla Hatchback GR Corolla [08/2023 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM

for HV Model: Click here 2023 - 2025 MY Corolla Corolla HV [11/2022 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM

Result

Proceed to

CAN DTCs are not output

A

CAN DTCs are output

B
B

GO TO CAN COMMUNICATION SYSTEM

for Gasoline Model: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 08/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING 2024 - 2025 MY Corolla Corolla Hatchback GR Corolla [08/2023 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

for HV Model: Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

A

4.

CHECK FOR DTCs*

(a) Using the GTS, check for DTCs.

Body Electrical > Front Radar Sensor > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTC C1A1100 is output

B

DTCs other than C1A1100 are output

C
B

GO TO DIAGNOSTIC TROUBLE CODE CHART (C1A1100)

C

GO TO STEP 7

A

5.

CHECK VEHICLE CONTROL HISTORY*

(a) Using the GTS, check for Vehicle Control History (RoB).

Body Electrical > Front Radar Sensor > Utility

Tester Display

Vehicle Control History (RoB)

(b) Make a note of the output Vehicle Control History (RoB).

Result

Proceed to

Vehicle Control History (RoB) codes are not output

A

Vehicle Control History (RoB) code X2024, X2025, X2026 or X2028 is output

B

Vehicle Control History (RoB) codes other than X2024, X2025, X2026 and X2028 are output

C
A

USE SIMULATION METHOD TO CHECK

B

GO TO VEHICLE CONTROL HISTORY (X2024, X2025, X2026 or X2028)

C

6.

RECONFIRM VEHICLE CONTROL HISTORY*

(a) Using the GTS, clear the Vehicle Control History (RoB).

Body Electrical > Front Radar Sensor > Utility

Tester Display

Vehicle Control History (RoB)

(b) Using the GTS, check for Vehicle Control History (RoB).

Body Electrical > Front Radar Sensor > Utility

Tester Display

Vehicle Control History (RoB)

Result

Proceed to

Vehicle Control History (RoB) codes are not output

A

Vehicle Control History (RoB) codes are output

B
A

USE SIMULATION METHOD TO CHECK

B

GO TO VEHICLE CONTROL HISTORY

7.

RECONFIRM DTC OUTPUT*

(a) Using the GTS, clear the DTCs.

Body Electrical > Front Radar Sensor > Clear DTCs

(b) Reproduce the vehicle conditions that were present when the DTCs that were noted were stored.

HINT:

Refer to each corresponding DTC for details on the detection conditions.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: FRONT RADAR SENSOR SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

(c) Using the GTS, check for DTCs.

Body Electrical > Front Radar Sensor > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B
A

GO TO STEP 5

B

GO TO DIAGNOSTIC TROUBLE CODE CHART