Mitsubishi Eclipse 1990 Service Manual page 534

5. Fuel trim monitor
Test conditions/procedure
1. All of the following conditions should be satisfied when the drive test is
(1) Engine coolant temperature:
(2) Outside air temperature:
(3) A/T condition:
Selector lever position:
Overdrive switch: ON
Power/economy changeover switch: Power
2. Carry out one trip monitoring according to the following drive pattern (from starting of
until ignition is turned off). (Takes approximately 35 minutes.)
After the engine is fully warmed up, turn the ignition switch to OFF.
the engine and accelerate to a speed of between 89
Monitoring period: drive for 30 minutes or more while maintaining the
89 97 km/h (55
than 120 seconds during this time. (Gentle acceleration and deceleration
carried out, but sudden acceleration and deceleration should be avoided.)
Decelerate to a stop. After the vehicle has stopped, turn the ignition switch to OFF.
Drive cycle pattern
97 (60)
64 (40)
Vehicle speed
(mph)
32 (20)
NOTE:
Throttle opening
angle
Caution
The shaded areas in the graph indicate times when the vehicle
speed should not go outside of the specified range.
ENGINE (TURBO)
AND ENGINE>
range
60 mph). Do not drive consistently for a continuous
Engine starts
TSB Revision
Troubleshooting
(when engine is fully warmed up)
or higher,
30 or more
(55 60 mph)
out.
or lower
97 km/h (55 60
speed at
of'
braking can be
Ignition
switch: OFF