Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000ZY3E
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 -           ]
Title: MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: DIAGNOSTIC TROUBLE CODE CHART; 2017 - 2020 MY Sienna [08/2016 -        ]

DIAGNOSTIC TROUBLE CODE CHART

ACTIVE TORQUE CONTROL 4WD SYSTEM

DTC Code

Detection Item

Trouble Area

See page

C1241

Low Power Supply Voltage Malfunction

- Battery

- ECU-IG1 fuse

- Wire harness and connector (IG1 circuit, GND circuit)

- Brake control system

- CAN communication system

- 4WD control ECU

2017 - 2020 MY Sienna [08/2016 -        ]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: C1241; Low Power Supply Voltage Malfunction

C1280

Engine Circuit Malfunction

- SFI system

- 4WD control ECU

2017 - 2020 MY Sienna [08/2016 -        ]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: C1280; Engine Circuit Malfunction

C1296

ABS Malfunction

- Brake control system (speed sensor circuit)

- Brake control system (deceleration sensor circuit)

- Skid control ECU

- 4WD control ECU

2016 - 2020 MY Sienna [12/2015 -        ]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: C1296; ABS Malfunction

C1297

Steering Angle Sensor

- Steering angle sensor

- CAN communication system

- 4WD control ECU

- Wire harness and connector

2017 - 2020 MY Sienna [08/2016 -        ]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: C1297; Steering Angle Sensor

C1298

Linear Solenoid Circuit

- 4WD fuse

- Wire harness and connector

- Electromagnetic control coupling

- 4WD control ECU

2016 - 2020 MY Sienna [12/2015 -        ]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: C1298; Linear Solenoid Circuit

C1299

Cancellation of 4WD Control

- Tire size

- Electromagnetic control coupling

- 4WD control ECU

2016 - 2020 MY Sienna [12/2015 -        ]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: C1299; Cancellation of 4WD Control

U0073

Control Module Communication Bus OFF

- CAN communication system

2017 - 2020 MY Sienna [08/2016 -        ]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: U0073,U0100,U0126,U0129; Control Module Communication Bus OFF

U0100

Lost Communication with ECM / PCM "A"

- CAN communication system

2017 - 2020 MY Sienna [08/2016 -        ]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: U0073,U0100,U0126,U0129; Control Module Communication Bus OFF

U0126

Lost Communication with Steering Angle Sensor Module

- CAN communication system

2017 - 2020 MY Sienna [08/2016 -        ]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: U0073,U0100,U0126,U0129; Control Module Communication Bus OFF

U0129

Lost Communication with Brake System Control Module

- CAN communication system

2017 - 2020 MY Sienna [08/2016 -        ]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: U0073,U0100,U0126,U0129; Control Module Communication Bus OFF