| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018KFC |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: TC and CG Terminal Circuit; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
TC and CG Terminal Circuit |
DESCRIPTION
Connecting terminals TC and CG of the DLC3 causes the ECU to display DTCs by blinking the ABS warning and slip indicator lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information (See page
![2018 - 2020 MY Sienna [11/2017 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: CALIBRATION](/t3Portal/stylegraphics/info.gif)
).
HINT:
When the indicator lights blink without terminals TC and CG connected, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in one or more ECUs is suspected.
PROCEDURE
|
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication system DTCs are output (See page
).
|
Result |
Proceed to |
|---|---|
|
DTCs are not output. |
A |
|
DTCs are output. |
B |
| B |
|
|
|
2. |
INSPECT DLC3 |
|
(a) Turn the ignition switch to ON. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
D16-13 (TC) - D16-4 (CG) |
Ignition switch ON |
11 to 14 V |
Text in Illustration
|
*a |
Front view of DLC3 |
| NG |
|
|
|
3. |
REPLACE ECM |
|
(a) Turn the ignition switch off. |
|
(b) Replace the ECM (See page
).
(c) Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
SST: 09843-18040
(d) Check that the ABS warning and slip indicator lights are blinking.
OK:
The ABS warning and slip indicator lights are blinking.
Text in Illustration
|
*a |
Front view of DLC3 |
HINT:
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts (See page
).
| OK |
|
END |
| NG |
|
|
4. |
CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM) |
(a) Turn the ignition switch off.
(b) Disconnect the A69 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D16-13 (TC) - A69-33 (TC) |
Always |
Below 1 Ω |
|
D16-13 (TC) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
Text in Illustration
|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
REPLACE ECM |
|
(a) Replace the ECM (See page
|
|
(b) Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
SST: 09843-18040
(c) Check that the ABS warning and slip indicator lights are blinking.
OK:
The ABS warning and slip indicator lights are blinking.
Text in Illustration
|
*a |
Front view of DLC3 |
HINT:
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts (See page
).
| OK |
|
END |
| NG |
|
|
|