Driving Patterns, 1, 2, 3 & 4

Driving Pattern:

- The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driving habits, etc.

Zone A refers to the range where the time required for the diagnosis under normal conditions* is the shortest.

Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed within zone A.

*: Normal conditions refer to the following:
- Sea level
- Flat road
- Ambient air temperature: 20 - 30 °C (68 - 86 °F)
- Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30 °C (68 - 86 °F)], diagnosis may also be performed.

Pattern 1:
- The engine is started at the engine coolant temperature of -10 to 35 °C (14 to 95 °F) (where the voltage between the ECM terminal 70 and ground is 3.0 - 4.3V).
- The engine must be operated at idle speed until the engine coolant temperature is greater than 70 °C (158 °F) (where the voltage between the ECM terminal 70 and ground is lower than 1.4V).
- The engine is started at the fuel tank temperature of warmer than 0 °C (32 °F) (where the voltage between the ECM terminal 82 and ground is less than 4.1V).

Pattern 2:
- When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted. In this case, the time required for diagnosis may be extended.

Pattern 3:
- The driving pattern outlined in *2 must be repeated at least 3 times.

Pattern 4:
- Tests are performed after the engine has been operated for at least 17 minutes.
- The accelerator pedal must be held very steady during steady-state driving.
- If the accelerator pedal is moved, the test must be conducted all over again.

*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH) again.




*2: Operate the vehicle in the following driving pattern.
1. Decelerate vehicle to 0 km/h (0 MPH) and let engine idle.
2. Repeat driving pattern shown at least 10 times.
- During acceleration, hold the accelerator pedal as steady as possible.
3. Repeat steps 1 and 2 until the EGR system SRT is set.

*3: Checking the vehicle speed with GST is advised.

Suggested Transmission Gear Position for A/T Models
Set the selector lever in the "D" position with the overdrive switch turned ON.