Idle Speed Check; Idle Mixture Check - Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement

Idle speed r/min
900
800
700
600
–10
20 50
Transmission oil temperature C
ENGINE <4G9> –

IDLE SPEED CHECK

1. Before inspection, set the vehicle to the pre-inspection
condition.
2. Turn off the ignition switch and then connect the MUT-II
to the diagnosis connector.
3. Check the basic ignition timing.
NOTE
Refer to P.11A-10 concerning the check procedure of the
basic ignition timing.
Standard value: 5 BTDC
4. Run the engine at idle for 2 minutes.
5. Check the idle speed. Select item No. 22 and take a reading
of the idle speed.
Standard value: 600
NOTE
(1) *: The idle speed in vehicles with manual transmission
(2) After 4 minutes or more have passed in the idle running
(3) The idle speed is controlled automatically adjusted
6. If the idle speed is outside the standard value, inspect
the GDI components by referring to GROUP 13A –
Troubleshooting.

IDLE MIXTURE CHECK

1. Before inspection, set the vehicle to the pre-inspection
condition.
2. Connect the MUT-II to the diagnosis connector.
3. Check that the basic ignition timing is within the standard
value.
NOTE
Refer to P.11A-10 concerning the check procedure of the
basic ignition timing.
Standard value: 5 BTDC
4. Run the engine at 2,500 r/min for 2 minutes.
5. Set the CO, HC tester.
6. Check the CO contents and the HC contents at idle.
NOTE
This measurement should be performed in less than
approximately 4 minutes since the engine speed become
the idle speed.
Standard value
On-vehicle Service
100 r/min*
varies in accordance with the transmission oil
temperature.
condition, the idle speed will become 750 r/min.
by the idle speed control system.
CO contents: 0.5% or less
HC contents: 100 ppm or less
11A-11
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