Check Mode

DIAGNOSIS INSPECTION (CHECK MODE)
Toyota Hand-Held Tester Only
Compared to the normal mode, the check mode has an increased sensitivity to detect malfunctions. Furthermore, the same diagnostic items which are detected in the normal mode can also be detected in the check mode.


Diagnostic Trouble Code (DTC) Check
1. Initial conditions.
- Battery positive voltage 11 Volts or more.
- Throttle valve fully closed.
- Transmission in park or neutral position.
- Air conditioning switched OFF.
2. Turn ignition switch OFF.
3. Prepare the Toyota hand-held tester.



4. Connect the Toyota hand-held tester to DLC3 in the fuse box at the lower left of the instrument panel.
5. Turn the ignition switch ON and switch the Toyota hand-held tester ON.
6. Switch the Toyota hand-held tester normal mode to check mode.



- Check that the MIL flashes.
7. Start the engine.
- Check that the MIL goes out after the engine starts.
8. Simulate the conditions of the malfunction described by the customer.

NOTICE: Leave the ignition switch ON until you have checked the DTCs, etc. Turning the ignition switch OFF switches the diagnosis system from check mode to normal mode, which causes all diagnostic codes, etc. to be erased.

9. After simulating the malfunction conditions, use the Toyota hand-held tester diagnosis selector to check the DTCs and freeze frame data, etc.
- Refer to the Toyota hand-held tester operator's manual for specific instructions.

10. After checking the DTCs, inspect the applicable circuit.
- Refer to the "Diagnostic Charts" for circuit inspection flowcharts.