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Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on.
Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 88km/hr (55mph) is reached.
Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for 3 minutes.
Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 32km/hr (20 mph).
Accelerate. Accelerate at 3/4 throttle until 55-60mph.
Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
Decelerate. Don't press the clutch or brakes or shift gears.
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