Toyota Corolla (E120): Indicator light circuit

Problem symptoms table

Circuit description

Other materials:

Air conditioning filter
The air conditioning filter must be changed regularly to maintain air conditioning efficiency. Removing the air conditioning filter 1. Turn the engine switch off. 2. Open the glove box. Slide off the damper (if equipped). 3. Push in the glove box on the vehicle's outer side to disconnect the claws ...

Key confinement prevention function does not work properly (unlock warning switch circuit)
Circuit description The unlock warning switch turns on when the key is inserted in the ignition key cylinder and the door courtesy switch turns on when the driver’s door is opened, and the integration relay monitors both switches conditions. According to these switches conditions, the int ...

Inspection procedure
Hint: read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the ...