Toyota Yaris: Vehicle Stability Control System / 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 "Calibration".
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-
Before performing this procedure, depress the brake pedal and confirm that the stop lights illuminate.
PROCEDURE
1. | CHECK GTS OUTPUT (CAN COMMUNICATION SYSTEM) |
(a) Operate the GTS, and check for DTCs related to the CAN communication system.
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Result | Proceed to |
Any CAN communication system relating DTCs are output | A |
None of the above conditions are met | B |
A |
| INSPECT CAN COMMUNICATION SYSTEM |
B |
| |
2. | INSPECT COMBINATION METER ASSEMBLY |
(a) Perform the Active Test of the combination meter assembly using the GTS.
Body Electrical > Combination Meter > Active Test
Tester Display |
ABS Warning |
(b) Check the combination meter assembly.
OK:
The ABS warning light turns on or off in accordance with the GTS operation.
OK |
| REPLACE BRAKE ACTUATOR ASSEMBLY |
NG |
| INSPECT METER / GAUGE SYSTEM |
DESCRIPTION The skid control ECU (brake actuator assembly) receives signals from the ECM, steering sensor and airbag sensor assembly via CAN communication...
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 skid control ECU (brake actuator assembly), perform "Calibration"...
Other information:
DESCRIPTION When the stop and start system does not operate, check whether the operation is prohibited because the auxiliary battery conditions are not met. Data List items Hood Courtesy Switch Auxiliary Battery Current Auxiliary Battery Fluid Temperature (Start) Auxiliary Battery Fluid Temperature Idling Stop Rate Total Idling Stop Rate Integrated Current Status of Auxiliary Battery Charge Control Minimum Voltage (Cranking) Minimum Voltage (Starter Solenoid Engagement) State of BBC Stop&Start Operating Permission (Power Management) Stop&Start Operating Permission (Minimum Voltage (Starter Solenoid Engagement)) Stop&Start Operating Permission (Minimum Voltage (Cranking)) Stop&Start Operating Permission (Integrated Current) Stop&Start Operating Prohibition (Jump Start) Stop&Start Operating Prohibition (Manual Start for the First Time) Auxiliary Battery Type Ambient Temperature Alternator Status NOTICE: If the Data List item Stop&Start Operating Permission (Power Management) is "NG" even after correcting a certain problem using the diagnostic troubleshooting procedures, the problem may be due to the auxiliary battery charge amount being temporarily low or the auxiliary battery may be deteriorated...
DISASSEMBLY CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during the front door removal/installation are shown below...
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WARNING
When removing the fuel-filler cap, loosen the cap slightly and wait
for
any hissing to stop, then remove it
Fuel spray is dangerous. Fuel can burn skin and eyes and cause illness
if
ingested. Fuel spray is released when there is pressure in the fuel tank and
the fuel-filler cap is removed too quickly.
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