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Drive Cycle-Mode 1
Start engine and warm to normal operating temperature. Ensure all electrical and A/C loads are off. Ensure ignition timing and idle speed are within specification. Adjust as necessary. See BASIC TESTING - 1.8L article. Ensure no jumper wires are connected to DLC. Increase engine RPM to specified speed. See Fig. 2 . Operate engine at specified RPM for minimum of 15 seconds. Idle engine for more than 20 seconds with cooling fan disabled.
Fig. 2: Drive Cycle-Mode 1 Engine Speed Table
Drive Cycle-Mode 2
Start engine and warm to normal operating temperature. Ensure all electrical and A/C loads are off. Drive vehicle at specified speed for one minute. See Fig. 3 .
Fig. 3: Drive Cycle-Mode 2 Vehicle Speed Table
Courtesy of MAZDA MOTORS CORP.
Drive Cycle-Mode 3
Start engine and warm to normal operating temperature. Ensure all electrical and A/C loads are off. Idle engine for additional 5 minutes. Drive vehicle at specified speed (V1) for one minute. Lower vehicle speed to specified speed (V2) for 3 minutes. See Fig. 4 .
Fig. 4: Drive Cycle-Mode 3 Vehicle Speed Table
Courtesy of MAZDA MOTORS CORP.
Drive Cycle-Mode 4
Ensure following conditions are met:
Engine coolant temperature is 32-95 °F (0-35 °C).
Intake air temperature is 50-140 °F (10-60 °C).
Barometric pressure is 72 kPa.
Fuel gauge needle points within 15-85 percent.
Start and operate engine at 3500 RPM for 200 seconds. Within next 40 seconds, accelerate vehicle to 40-60 MPH (65-96 km/H). Maintain vehicle speed for 6 minutes.
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Tuesday, January 20th, 2009 AT 4:00 PM