Diagnosis System
WARNING: This page is about a different car, the 2009 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DLC3
- Check the DLC3 (See HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS ).
- INSPECT BATTERY VOLTAGE
- Measure the battery voltage.
Standard voltage:
11 to 14 V
If the voltage is below 11V, recharge or replace the battery before proceeding to the next step.
- Measure the battery voltage.