Check Mode

DIAGNOSIS INSPECTION IN CHECK MODE

For 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 Check
1. Initial conditions.
- Battery positive voltage 11 V 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 data link connector (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 from Normal Mode to Check Mode.



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

NOTICE: Leave the ignition switch ON until you have checked the diagnostic trouble codes, etc.

9. After simulating the malfunction conditions, use the Toyota hand-held tester diagnosis selector to check the diagnostic trouble codes and freezed frame data, etc.

HINT: Take care not to turn the ignition switch OFF. Turning the ignition switch OFF switches the diagnosis system from Check Mode to Normal Mode, so all diagnostic codes, etc. are erased.

10. After checking the diagnostic trouble code, inspect the applicable circuit.