Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM10000000289WA
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM (for TMMMS Made): B00C228; Passenger Seat Occupant Classification Sensor "C" Signal Bias Level Out of Range / Zero Adjustment Failure; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]

DTC

B00C228

Passenger Seat Occupant Classification Sensor "C" Signal Bias Level Out of Range / Zero Adjustment Failure

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B00C228

Passenger Seat Occupant Classification Sensor "C" Signal Bias Level Out of Range / Zero Adjustment Failure

Either of following conditions is met:

  • Rear occupant classification sensor LH sensed large load
  • Rear occupant classification sensor LH malfunction

Separate type front seat cushion spring assembly RH (rear occupant classification sensor LH)

CAUTION / NOTICE / HINT

NOTICE:

  • After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: BEFORE DISCONNECTING BATTERY

    HINT:

    When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: AUTOMATIC LEARNING CHART

  • After replacing the separate type front seat cushion spring assembly RH, refer to work procedure.

    Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - 03/2023]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: WORK PROCEDURE 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2023 - 08/2023]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: WORK PROCEDURE 2024 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2023 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: WORK PROCEDURE

PROCEDURE

1.

PERFORM ZERO POINT CALIBRATION

(a) Using the GTS, perform "Occupant Detection Sensor Zero Point Calibration".

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM (for TMMMS Made): INITIALIZATION

NEXT

2.

CHECK DTC

(a) Turn the ignition switch to ON, and wait for at least 60 seconds.

(b) Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs

(c) Turn the ignition switch off.

(d) Turn the ignition switch to ON, and wait for at least 60 seconds.

(e) Check the DTCs.

Body Electrical > SRS Airbag > Trouble Codes

Result

Proceed to

B00C228 is output

A

B00C228 is not output

B
B

END (NORMAL AFTER PERFORMING ZERO POINT CALIBRATION)
A

3.

REPLACE SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

(c) Replace the separate type front seat cushion spring assembly RH with a new one.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; SEAT: FRONT SEAT ASSEMBLY (for Manual Seat): REMOVAL

(d) Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.

NEXT

4.

PERFORM ZERO POINT CALIBRATION

(a) Using the GTS, perform "Occupant Detection Sensor Zero Point Calibration".

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM (for TMMMS Made): INITIALIZATION

NEXT

END (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH WAS DEFECTIVE)