- Wheel speed sensor malfunction is received from the skid control ECU
- Deceleration sensor malfunction is received from skid control ECU
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIQ9 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - ] |
| Title: MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: C1296; ABS Malfunction; 2016 - 2020 MY Sienna [12/2015 - ] | ||
|
DTC |
C1296 |
ABS Malfunction |
DESCRIPTION
If a malfunction in the speed sensor signal circuit deceleration sensor circuit occurs, the 4WD control ECU will output this DTC.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1296 |
When one of the following conditions is met: |
|
CAUTION / NOTICE / HINT
HINT:
Check the condition of each related circuit connector before troubleshooting (See page
![2016 - 2020 MY Sienna [12/2015 - ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE](/t3Portal/stylegraphics/info.gif)
).
PROCEDURE
|
1. |
CHECK FOR DTC (BRAKE CONTROL SYSTEM) |
(a) Clear the DTC (See page
).
(b) Turn the ignition switch off.
(c) Turn the ignition switch to ON again.
(d) Drive the vehicle, accelerate to a speed of 20 km/h (12 mph) or more, and check if the speed sensor DTC (brake control system DTC) is output.
Result
|
Result |
Proceed to |
|---|---|
|
Brake control system DTC (speed sensor or deceleration sensor DTC) is not output |
A |
|
Brake control system DTC (speed sensor or deceleration sensor DTC) is output |
B |
HINT:
When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.
| B |
|
REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (BRAKE CONTROL SYSTEM) (See page
|
|
|
2. |
READ VALUE USING TECHSTREAM (SPEED SENSOR SIGNAL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / Four Wheel Drive / Data List.
(e) Read the value displayed on the Techstream.
Four Wheel Drive
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
FR Wheel Speed |
FR Wheel Speed / Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph) |
Actual wheel speed |
Almost no difference from the speedometer |
|
FL Wheel Speed |
FL Wheel Speed / Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph) |
Actual wheel speed |
Almost no difference from the speedometer |
|
RR Wheel Speed |
RR Wheel Speed / Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph) |
Actual wheel speed |
Almost no difference from the speedometer |
|
RL Wheel Speed |
RL Wheel Speed / Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph) |
Actual wheel speed |
Almost no difference from the speedometer |
OK:
The speed value output from the speed sensor displayed on the Techstream is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
| NG |
|
GO TO BRAKE CONTROL SYSTEM (See page
|
|
|
3. |
READ VALUE USING TECHSTREAM (FORWARD AND REARWARD G) |
(a) Enter the following menus: Chassis / Four Wheel Drive / Data List.
(b) Read the value displayed on the Techstream.
Four Wheel Drive
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Forward and Rearward G |
Deceleration sensor (Forward and Rearward G) / Min.: -25.10 m/s2 Max.: 24.90 m/s2 |
Approximately 0 +/-0.13 while stationary |
- |
OK:
The deceleration sensor output value is normal.
| OK |
|
| NG |
|
GO TO BRAKE CONTROL SYSTEM (See page
|
|
|