Engine Switch Illumination Circuit [06/2018 - 01/2019]: Procedure
WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, 2020 Toyota Corolla, and 2019 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- PERFORM ACTIVE TEST USING TECHSTREAM
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Smart Key / Active Test.
- Perform the Active Test according to the display on the Techstream.
Body Electrical > Smart Key > Active Test
Tester Display Measurement Item Control Range Diagnostic Note Power/Engine SW Light Engine switch illumination OFF or ON - Body Electrical > Smart Key > Active Test
Tester Display Power/Engine SW Light OK
Engine switch illumination comes on.
Result
Proceed to OK NG
Result:
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [06/2018 - 01/2019]
Result:
NG
See step 2
- INSPECT ENGINE SWITCH
- Remove the engine switch.
Refer to REMOVAL [06/2018 - ]
- Inspect the engine switch.
Refer to INSPECTION [06/2018 - ]
Result
Proceed to OK NG
Result:
NG
REPLACE ENGINE SWITCH. Refer to REMOVAL [06/2018 - ]
Result:
OK
See step 3
- Remove the engine switch.
- CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
- Disconnect the I1 certification ECU (smart key ECU assembly) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition I35-5 (SWIL) - I1-10 (SWIL) Always Below 1 Ω I35-3 (GND) - I1-11 (AGND) Always Below 1 Ω I35-5 (SWIL) or I1-10 (SWIL) - Body ground Always 10 kΩ or higher I35-3 (GND) or I1-11 (AGND) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL [06/2018 - 01/2019]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR