| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIV8 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 11/2017] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: DIAGNOSIS SYSTEM; 2016 - 2017 MY Sienna [12/2015 - 11/2017] | ||
DIAGNOSIS SYSTEM
1. DESCRIPTION
When troubleshooting a vehicle with the diagnosis system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the vehicle's skid control ECU.
The skid control ECU records DTCs when it detects a malfunction in itself or in its circuits.
To check the DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream enables you to clear the DTCs, activate the various actuators, and check the Freeze Frame Data and Data List.
(a) Check the battery voltage.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge the battery before proceeding to the next step.
(b) Check the DLC3 (See page
![2016 - 2020 MY Sienna [12/2015 - ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: GENERAL INFORMATION](/t3Portal/stylegraphics/info.gif)
).
2. DIAGNOSIS
(a) If the skid control ECU detects a malfunction, the ABS warning, brake warning and SLIP indicator lights will come on in order to warn the driver.
(b) The DTCs are simultaneously stored in the memory.
The DTCs can be read by connecting SST between terminals TC and CG of the DLC3 and observing the blinking pattern of the ABS warning and SLIP indicator lights, or by connecting the Techstream (See page
).
(c) This system has a Test Mode (signal check) function.
The DTCs can be read by connecting SST between terminals TS and CG of the DLC3 and observing the blinking pattern of the ABS warning and SLIP indicator lights, or by connecting the Techstream (See page
).
3. WARNING LIGHT AND INDICATOR LIGHT INITIAL CHECK
(a) Release the parking brake.
NOTICE:
When releasing the parking brake, move the shift lever to P for safety.
HINT:
When the parking brake is applied or the level of the brake fluid is low, the brake warning light comes on.
(b) When the ignition switch is turned to ON, check that the ABS warning, brake warning, VSC OFF indicator, and SLIP indicator lights on the combination meter's for approximately 3 seconds.
HINT:
If the warning light and indicator light check result is not normal, proceed to Troubleshooting for the ABS warning, brake warning, VSC OFF indicator and SLIP indicator light circuits.
If the indicator remains on or does not come on, proceed to troubleshooting for the light circuits listed below.
|
Trouble Area |
See Procedure |
|---|---|
|
ABS warning light circuit (Remains on) |
|
|
ABS warning light circuit (Does not come on) |
|
|
Brake warning light circuit (Remains on) |
|
|
Brake warning light circuit (Does not come on) |
|
|
VSC OFF indicator light circuit (Remains on) |
|
|
VSC OFF indicator light circuit (Does not come on) |
|
|
SLIP indicator light circuit (Remains on) |
|
|
SLIP indicator light circuit (Does not come on) |
|
|
|