Toyota Camry (XV70): Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
When troubleshooting a vehicle with a diagnosis system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the skid control ECU (brake actuator assembly).
The skid control ECU (brake actuator assembly) records DTCs when it detects a malfunction in itself or in its circuits.
To check for DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream can be used to clear the DTCs, activate various actuators, and check the Freeze Frame Data and Data List.
(a) Check the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge the battery before proceeding to the next step.
(b) Check the DLC3.
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DIAGNOSIS
(a) If the skid control ECU (brake actuator assembly) detects a malfunction, the ABS warning, brake system warning light (red indicator), and/or slip indicator lights will come on in order to warn the driver.
(b) DTCs are simultaneously stored in memory.
The DTCs can be read by connecting the Techstream.
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(c) This system has a Test Mode (Signal Check) function.
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WARNING LIGHT AND INDICATOR LIGHT INITIAL CHECK
(a) When the ignition switch is turned to ON, check that the ABS warning light, brake system warning light (red indicator), VSC OFF indicator light and slip indicator light come on for approximately 3 seconds.
HINT:
- When the brake fluid level is low or the vacuum inside the brake booster decreases, the brake system warning light (red indicator) comes on.
- If the warning light and indicator light check result is not normal, proceed to troubleshooting for the ABS warning, brake system warning light (red indicator), VSC OFF indicator and slip indicator light circuits.
- If any of the indicators remains on or does not come on, proceed to troubleshooting for the light circuits listed below.
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Trouble Area | See Procedure |
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ABS warning light circuit (Remains on) |
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ABS warning light circuit (Does not come on) |
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Brake system warning light (red indicator) circuit (Remains on) |
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Brake system warning light (red indicator) circuit (Does not come on) |
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VSC OFF indicator light circuit (Remains on) |
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VSC OFF indicator light circuit (Does not come on) |
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Slip indicator light circuit (Remains on) |
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Slip indicator light circuit (Does not come on) |
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READ NEXT:
Dtc Check / Clear
DTC CHECK / CLEAR DTC CHECK (a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3. (c) Turn the ignition switch to ON.
(d) Turn the Techstream on. (e) Read the DTCs following th
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA/INFORMATION
(a) Using the Techstream, check the vehicle condition (ECU, sensor) when the brake system operates or a DTC is output.
CHECK FREEZE FRAME DATA AND I
Fail-safe Chart
FAIL-SAFE CHART FAIL-SAFE CHART (a) When the skid control ECU (brake actuator assembly) detects a solenoid valve malfunction or abnormal signal from a sensor, the brake actuator assembly cuts power an
SEE MORE:
Driving assist systems
To keep driving safety and performance, the following systems
operate automatically in response to various driving situations.
Be aware, however, that these systems are supplementary and
should not be relied upon too heavily when operating the vehicle.
◆ ABS (Anti-lock Brake System)
Helps t
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
If the DCM (telematics transceiver) has been replaced, perform the DCM Activation procedure.
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Before replacing the DCM (telematics transceiver), refer to Registration.
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HINT:
Use the table below to help determine the cause
