Inspection Procedure
WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
Using Techstream's Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save time.
NOTE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
- Warm up the engine.
- Turn the ignition switch OFF.
- Connect Techstream to the DLC3.
- Turn the ignition switch ON and turn the tester ON.
- Enter the following menus: Powertrain / Engine and ECT / Data List.
- Follow the instructions on the tester and read the Data List.MEASUREMENT ITEM/RANGE AND DIAGNOSTIC NOTE
Tester Display Measurement Item/Range Normal Condition Diagnostic Note Stop Light Switch Stop light switch status/ ON or OFF - Brake pedal is depressed: ON
- Brake pedal is released: OFF
-
- INSPECT STOP LIGHT SWITCH
- Remove the A3 stop light switch.
- Measure the resistance of the switch.
Standard resistance
TESTER CONNECTION AND SPECIFIED CONDITIONTester Connection Switch Condition Specified Condition 1-2 Pin pushed (pedal released) 10 kΩ or higher 1-2 Pin not pushed (pedal depressed) Below 1 Ω 3-4 Pin pushed (pedal released) Below 1 Ω 3-4 Pin not pushed (pedal depressed) 10 kΩ or higher
NG: REPLACE STOP LIGHT SWITCH
OK: Go to Next Step
- CHECK WIRE HARNESS (ECM - BATTERY)
- Measure the voltage of the wire harness side connector.
Standard voltage
TESTER CONNECTION AND SPECIFIED CONDITIONTester Connection Condition Specified Condition A9-36 (STP) - Body ground Brake pedal is depressed 10 to 14 V A9-36 (STP) - Body ground Brake pedal is released Below 1 V
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: REPLACE ECM
- Measure the voltage of the wire harness side connector.