Inspection Procedure
- READ VALUE USING TECHSTREAM (ENGINE SWITCH)
- Use the Data List to check if the engine switch is functioning properly.
Main Body
ITEM RANGE REFERENCETester Display Measurement Item/Range Normal Condition Diagnostic Note Start Switch 1 Start Switch 1/ON or OFF ON: Engine switch on (IG)
OFF: Engine switch off- Start Switch 2 Start Switch 2/ON or OFF ON: Engine switch on (IG)
OFF: Engine switch off- OK: ON appears on the screen.
NG: Go to step 3
OK: Go to next step.
- Use the Data List to check if the engine switch is functioning properly.
- CHECK ENGINE SWITCH (SWITCH CONDITION)
- Ensure the key is inside the cabin.
- Check that the power source mode changes as shown below each time the engine switch is pushed.
OK: off → on (ACC) → on (IG) → off
NG: GO TO POWER SOURCE MODE DOES NOT CHANGE
OK: SYSTEM IS OK
- INSPECT ENGINE SWITCH
- Remove the engine switch (see REMOVAL ).
- Measure the resistance according to the value(s) in the table below.
Standard resistance
RESISTANCE REFERENCETester Connection Switch Condition Specified Condition 7 (SS1) - 5 (GND) Pushed Below 1 Ω 2 (SS2) - 5 (GND) Pushed Below 1 Ω 7 (SS1) - 5 (GND) Not pushed 10 kΩ or higher 2 (SS2) - 5 (GND) Not pushed 10 kΩ or higher NG: REPLACE ENGINE SWITCH (See REMOVAL )
OK: Go to next step.
- CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - MAIN BODY ECU AND BODY GROUND)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the L36 engine switch connector.
- Disconnect the L13 main body ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
RESISTANCE REFERENCETester Connection Condition Specified Condition L36-7 (SS1) - L13-17 (SSW1) Always Below 1 Ω L36-2 (SS2) - L13-16 (SSW2) Always Below 1 Ω L36-5 (GND) - Body ground Always Below 1 Ω L36-7 (SS1) or L13-17 (SSW1) - Body ground Always 10 kΩ or higher L36-2 (SS2) or L13-16 (SSW2) - Body ground Always 10 kΩ or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE MAIN BODY ECU