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ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-1231 [VG33ER] C D E F G H I J K L M A EC ● The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driv- *: 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. °C (68 - 86°F)], diag- nosis 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 59 and ground is 3.0 - 4.3V). ● The engine must be operated at idle speed until the engine coolant temperature is greater than °C (158°F) (where the voltage between the ECM terminal 59 and ground is lower than 1.4V). ● The engine is started at the tank fuel temperature of warmer than 0 °C (32°F) (where the voltage between the ECM terminal 60 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 con- 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 1. Decelerate vehicle to 0 km/h (0 MPH) and let engine idle. 2. Repeat driving pattern shown below at least 10 times. – During acceleration, hold the accelerator pedal as steady as *3: Checking the vehicle speed with CONSULT-II or GST is advised. Suggested Transmission Gear Position for A/T Models SEF414S |