Diagnosis System
WARNING: This page is about a different car, the 2011 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- DESCRIPTION
- The transponder key ECU controls the vehicle's immobilizer system functions. Immobilizer system data and Diagnostic Trouble Code (DTC) can be read through the vehicle's Data Link Connector 3 (DLC3).
In some cases, a malfunction may be occurring in the immobilizer system even though the security indicator light is not illuminated.
When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
- The transponder key ECU controls the vehicle's immobilizer system functions. Immobilizer system data and Diagnostic Trouble Code (DTC) can be read through the vehicle's Data Link Connector 3 (DLC3).
- CHECK DLC3
- Check the DLC3. Refer to GENERAL INFORMATION .
- INSPECT BATTERY VOLTAGE
- Measure the battery voltage.
Standard Voltage
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
- Measure the battery voltage.