Toyota Camry (XV70): ABS Warning Light Remains ON
DESCRIPTION
This procedure is for troubleshooting when the ABS warning light remains on but no DTCs are output.
The skid control ECU (brake actuator assembly) controls the ABS warning light in the combination meter assembly via CAN communication.
CAUTION / NOTICE / HINT
NOTICE:
- After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and system information memorization.
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- Before performing this procedure, depress the brake pedal and confirm that the stop lights illuminate.
PROCEDURE
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1. | CHECK VEHICLE CONTROL HISTORY (RoB) (VEHICLE STABILITY CONTROL SYSTEM AND ELECTRIC PARKING BRAKE SYSTEM) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake/EPB / Utility / Vehicle Control History (RoB).
(d) Using the Techstream, check for Vehicle Control History (RoB).
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Tester Display |
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| Vehicle Control History (RoB) |
HINT:
If vehicle control history (RoB) is stored when the vehicle stability control system and electric parking brake system are suspended, the ABS warning light illuminates.
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Result | Proceed to |
|---|---|
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There is no vehicle control history (RoB) for when the vehicle stability control system and electric parking brake system were suspended. |
A |
| There is vehicle control history (RoB) for when the vehicle stability control system and/or electric parking brake system were suspended. |
B |
| B |
.gif) | PERFORM TROUBLESHOOTING AND REPAIR REGARDING VEHICLE CONTROL HISTORY (RoB) NOTICE: After performing troubleshooting and repair regarding vehicle control history (RoB), clear the vehicle control history (RoB). |
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| 2. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(d) Perform the Active Test of the combination meter assembly using the Techstream.
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Tester Display |
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| ABS Warning |
(e) Check the combination meter assembly.
OK:
The ABS warning light turns on or off in accordance with Techstream operation.
| OK | | REPLACE BRAKE ACTUATOR ASSEMBLY |
| NG | | INSPECT METER / GAUGE SYSTEM |
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Installation
INSTALLATION CAUTION / NOTICE / HINT
NOTICE:
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On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE
1. INSPECT PARKING BRAKE ACTUATOR ASSEMBLY (a) With the ignition switch ON and the wheels not contacting the ground, operate the electric parking brake switch assembly to check the condition of the rear wheels when the electric parking brake is operating and not ope
