- Sensor installation
- Yaw rate and acceleration sensor (w/ VDIM)
- Yaw rate and acceleration sensor (airbag sensor assembly) (w/o VDIM)
- Skid control ECU (brake actuator assembly)
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIVY |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 11/2017] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1420; Acceleration Sensor Malfunction; 2016 - 2017 MY Sienna [12/2015 - 11/2017] | ||
|
DTC |
C1420 |
Acceleration Sensor Malfunction |
DESCRIPTION
- The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor via the CAN communication system (w/ VDIM).
- The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor (airbag sensor assembly) via the CAN communication system (w/o VDIM).
The yaw rate sensor has a built-in acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2).
If there is a malfunction in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTCs U0123 (Lost Communication with Yaw Rate Sensor Module) and U0124 (Lost Communication with Lateral Acceleration Sensor Module) are set.
These DTCs are also output when calibration has not been completed.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1420 |
After the difference between GL1 and GL2 becomes 0.6 G or more with the vehicle stationary, the difference remains 0.4 G or more for 60 seconds or more. |
|
WIRING DIAGRAM
Refer to DTCs C1232, C1243 and C1245 (See page
![2016 - 2017 MY Sienna [12/2015 - 11/2017]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1232,C1243,C1245; Acceleration Sensor Stuck Malfunction+](/t3Portal/stylegraphics/info.gif)
).
CAUTION / NOTICE / HINT
NOTICE:
When replacing the brake actuator assembly or yaw rate and acceleration sensor, perform zero point calibration and store system information (See page
).
HINT:
When DTC U0123, U0124 and/or U0126 is output together with DTC C1420, inspect and repair the trouble areas indicated by DTC U0123, U0124 and/or U0126 first (See page
).
PROCEDURE
|
1. |
CHECK VEHICLE EQUIPMENT |
(a) Confirm whether the vehicle is w/ VDIM or w/o VDIM.
Result
|
Result |
Proceed to |
|---|---|
|
w/ VDIM |
A |
|
w/o VDIM |
B |
| B |
|
|
|
2. |
CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION |
(a) Turn the ignition switch off.
(b) Check that the yaw rate and acceleration sensor has been installed properly (See page
).
OK:
The sensor is tightened to the specified torque.
The sensor is not installed in a tilted position.
HINT:
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step (See page
).
| OK |
|
| NG |
|
|
3. |
CHECK AIRBAG SENSOR ASSEMBLY |
(a) Turn the ignition switch off.
(b) Check that the yaw rate and acceleration sensor (airbag sensor assembly) has been installed properly (See page
).
OK:
The sensor is tightened to the specified torque.
The sensor is not installed in a tilted position.
HINT:
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step (See page
).
| OK |
|
| NG |
|
|
|