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) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake / Utility / Vehicle Control History (RoB).
(d) Using the Techstream, check for Vehicle Control History (RoB).
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Tester Display |
|---|
| Vehicle Control History (RoB) |
HINT:
If vehicle control history (RoB) is stored when the vehicle stability control system is suspended, the ABS warning light illuminates.
|
Result | Proceed to |
|---|---|
|
There is no vehicle control history (RoB) for when the vehicle stability control system was suspended. |
A |
| There is vehicle control history (RoB) for when the vehicle stability control system was 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 |
|---|
| 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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DESCRIPTION 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
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DESCRIPTION This procedure is for troubleshooting when the brake system warning light (red indicator) remains on but no DTCs are output.
The skid control ECU (brake actuator assembly) controls the b
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DESCRIPTION The skid control ECU (brake actuator assembly) controls the brake system warning light (red indicator) in the combination meter assembly via CAN communication. CAUTION / NOTICE / HINT
NO
SEE MORE:
Noise Occurs
PROCEDURE
1. CHECK NOISE CONDITION
(a) Check from which direction the noise comes (front left or right, or rear left or right).
OK: The location of the noise source can be determined.
NG
GO TO STEP 3
OK
2.
CHECK SPEAKERS (a
ABS Pump Motor Control Internal Electronic Failure (C052C49)
DESCRIPTION The ABS motor relay and pump motor are built into the brake actuator assembly.
If the skid control ECU (brake actuator assembly) detects a malfunction in the drive circuit of the pump motor, this DTC is stored.
DTC No. Detection Item
DTC Detection Condition Trouble Area
