Toyota Camry owners & service manuals

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.

Trouble Area

See Procedure

ABS warning light circuit (Remains on)

ABS warning light circuit (Does not come on)

Brake system warning light (red indicator) circuit (Remains on)

Brake system warning light (red indicator) circuit (Does not come on)

VSC OFF indicator light circuit (Remains on)

VSC OFF indicator light circuit (Does not come on)

Slip indicator light circuit (Remains on)

Slip indicator light circuit (Does not come on)

    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:

     Stop Lamp Relay Actuator Stuck On (C13807E)

    DESCRIPTION When any of the following conditions are met, the skid control ECU (brake actuator assembly) sets the drive output (STPO) ON which operates the stop light control relay (stop light switch assembly) and turns on the stop lights. Illumination Conditions: Pre-collision brake is operati

     Light bulbs

    You may replace the following bulbs yourself. The difficulty level of replacement varies depending on the bulb. If necessary bulb replacement seems difficult to perform, contact your Toyota dealer. For more information about replacing other light bulbs, contact your Toyota dealer. Preparing

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