Check Mode

CHECK MODE INSPECTION

NOTICE: Only available with Toyota hand-held tester
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.

NOTICE: When the diagnosis system is switched from Normal Mode to Check Mode, it erases all diagnostic trouble codes and freeze frame data recorded in Normal Mode. So before switching modes, always check the diagnostic trouble codes and freeze frame data, and note them down.

DIAGNOSTIC TROUBLE CODE 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 Malfunction Indicator Lamp (MIL) flashes.
7. Start the engine.
- The MIL goes out after the engine start.
8. Simulate the conditions of the malfunction described by the customer.

NOTICE: If the Toyota hand-held tester switches the engine control module (ECM) from Normal Mode to Check Mode or vice-versa, OR if the ignition switch is turned from ON to ACC or OFF during Check Mode operation, the diagnostic trouble codes and freeze frame data will be erased.

9. After simulating the malfunction conditions, use the Toyota hand-held tester diagnosis selector to check the diagnostic trouble codes and freeze frame data, etc.
10. After recording any diagnostic trouble code(s), inspect the applicable circuit(s).