DESCRIPTION The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication. CAUTION / NOTICE / HINT
NOTICE:
- When replacing the skid control ECU (brake actuator assembly), perform
system variant learning and acceleration zero point calibration.
Click here 
- Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE |
1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication system DTCs are output. Click here
|
Result | Proceed to | |
DTCs are not output | A | |
DTCs are output | B |
| B |
 | INSPECT CAN COMMUNICATION SYSTEM |
|
A |
 | |
| 2. |
PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE WARNING LIGHT) |
(a) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Active Test. Chassis > ABS/VSC/TRAC/EPB > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note | |
Brake Warning Light | Brake system warning light (red indicator) |
Warning light OFF/ON | Observe combination meter assembly | Chassis > ABS/VSC/TRAC/EPB > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
Brake Warning Light | Brake system warning light (red indicator) |
ON or OFF | ON: Warning light on
OFF: Warning light off |
- | Chassis > ABS/VSC/TRAC/EPB > Active Test
|
Active Test Display | |
Brake Warning Light |
|
Data List Display | |
Brake Warning Light | (b) Check the operating condition of the brake system warning light (red indicator) when operating it using the Techstream.
| Result |
Proceed to | | Brake warning light in the Data List does not change using the Active Test |
A | | Brake warning light in the Data List turns ON/OFF using the Active Test |
B |
| A |
| REPLACE BRAKE ACTUATOR ASSEMBLY |
|
B | |
| |
| 3. |
INSPECT COMBINATION METER ASSEMBLY | (a) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(b) Perform the Active Test of the combination meter assembly using the Techstream. Body Electrical > Combination Meter > Active Test
|
Tester Display | | Brake Warning |
(c) Check the combination meter assembly. OK: The brake system warning light (red indicator) turns on or off in accordance with Techstream operation.
| OK |
| REPLACE BRAKE ACTUATOR ASSEMBLY |
| NG |
| INSPECT METER / GAUGE SYSTEM | | 
