Diagnosis (Check Mode)

INSPECT DIAGNOSIS (Check Mode)

HINT: Hand-held tester only: Compared to the normal mode, the check mode has high sensibility to detect malfunctions. Furthermore, the same diagnostic items which are detected in the normal mode can also be detected in the check mode.

a. Check the DTC.

1. Check the initial conditions.
- Battery positive voltage 11 V or more.
- Throttle valve fully closed.
- Transmission in P position.
- Air conditioning switched off.

2. Turn the ignition switch OFF




3. Connect the hand-held tester to the DLC3.
4. Turn the ignition switch ON and the hand-held tester ON.




5. Switch the hand-held tester from the normal mode to the check mode (Check that the MIL flashes).
6. Start the engine (the MIL goes off after the engine starts).
7. Simulate the conditions of the malfunction described by the customer.

NOTE: Leave the ignition switch ON until you have checked the DTCs, etc.

8. After simulating the malfunction conditions, use the hand-held tester diagnosis selector to check the DTCs and freeze frame data, etc.

HINT: Take care not to turn the ignition switch OFF, because it switches the diagnosis system from the check mode to the normal mode and erases all the DTCs, etc..

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

b. Clear the DTC.
Operate the scan tool (OBD II scan tool or hand-held tester) to erase the DTC and freeze frame data (See the scan tool's instruction book for the operating instructions.).