Check Mode

Compared to the normal mode, the check mode has high sensing ability 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 Volts or more.
- Throttle valve fully closed.
- Transmission in PARK 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 DLC 3 in the fuse box at the lower right 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. (MIL and O/D OFF indicator light go off 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.

9. After simulating the malfunction conditions, use the TOYOTA hand - held tester diagnosis selector to check the DTCs and freeze 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 DTCs, etc. are erased.

10. After checking the DTC, inspect the applicable circuit.