Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VIQ3 |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 - 08/2016] |
Title: MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: U0073,U0100,U0126,U0129; Control Module Communication Bus OFF; 2016 MY Sienna [12/2015 - 08/2016] |
DTC
|
U0073
|
Control Module Communication Bus OFF
|
DTC
|
U0100
|
Lost Communication with ECM / PCM "A"
|
DTC
|
U0126
|
Lost Communication with Steering Angle Sensor Module
|
DTC
|
U0129
|
Lost Communication with Brake System Control Module
|
DESCRIPTION
-
The 4WD control ECU inputs the signals sent from the ECM and skid control ECU via the CAN communication system.
-
When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.
DTC No.
|
DTC Detection Condition
|
Trouble Area
|
U0073
|
-
When the following continues for 5 seconds or more:
- Signals from the 4WD control ECU are not received.
-
When the following occurs 10 times consecutively:
- A communication malfunction (bus off) occurs one or more times within 0.1 seconds.
|
CAN communication system
|
U0100
|
-
When both of the following continue for 2 seconds or more:
- The voltage of the IG1 terminal is 10 V or more.
- At a vehicle speed of 60 km/h (38 mph) or more, communication with the ECM cannot be performed.
|
CAN communication system
|
U0126
|
-
When both of the following continue for 1 second or more:
- The voltage of the IG1 terminal is 10 V or more.
- Communication with the steering angle sensor cannot be performed.
-
When all of the following occur 10 times consecutively:
- The condition that communication with the steering angle sensor cannot be performed occurs once within 5 seconds.
- The voltage of the IG1 terminal is 10 V or more.
- Occurs 10 times or more within 60 seconds.
|
CAN communication system
|
U0129
|
-
When the following continues for 3 seconds or more:
- The voltage of the IG1 terminal is 10 V or more.
- Communication with the skid control ECU cannot be performed.
|
CAN communication system
|
PROCEDURE
1.
|
CHECK FOR DTC (ACTIVE TORQUE CONTROL 4WD SYSTEM)
|
(a) Check for DTCs (See page
).
(b) Record the output DTCs (active torque control 4WD system).
HINT:
When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.
|