Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000026KPW
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): C116514; ABS Pump Motor Drive Circuit Supply Voltage Circuit Short to Ground or Open; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 -        ]

DTC

C116514

ABS Pump Motor Drive Circuit Supply Voltage Circuit Short to Ground or Open

DESCRIPTION

If a malfunction is detected in the power supply circuit, the skid control ECU (brake actuator assembly) power source voltage drops, the skid control ECU (brake actuator assembly) will store these DTCs.

If the battery voltage is temporarily low, this DTC may be stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C116514

ABS Pump Motor Drive Circuit Supply Voltage Circuit Short to Ground or Open

The BM terminal voltage monitor value is open circuit condition for 1 second or more.
  • Improperly connected connector, deformation or corrosion of terminals
  • Wire harness and connector
  • Skid control ECU (brake actuator assembly)

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Before performing troubleshooting, make sure to confirm that the battery voltage is normal.

    Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

PROCEDURE

1.

CHECK DTC

(a) Check the DTCs that are output.

Chassis > Brake > Trouble Codes

Result

Proceed to

Only DTC C116514 is output.

A

DTCs other than C116514 are output.

B
B

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
A

2.

CHECK HARNESS AND CONNECTOR (BM TERMINAL)

(a) Turn the ignition switch off.

(b) Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:

The connector is securely connected.

(c) Disconnect the A140 skid control ECU (brake actuator assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A140-46 (BM) - Body ground

Always

11 to 14 V
OK

REPLACE BRAKE ACTUATOR ASSEMBLY 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR