Idle Speed: Testing and Inspection
INSPECTION1. Before checking the idle speed, check the following:
1 Ensure the air cleaner element is free from clogging, ignition timing is correct, spark plugs are in good condition, and hoses are connected properly.
2 Ensure the malfunction indicator light does not illuminate.
2. Idle the engine.
3. Stop the engine, and turn the ignition switch to OFF.
4. Insert the cartridge to Subaru Select Monitor.
5. Connect the Subaru Select Monitor to data link connector.
6. Turn the ignition switch to ON and Subaru Select Monitor switch to ON.
7. Select {Each System Check} in Main Menu.
8. Select {Engine} in Selection Menu.
9. Select {Current Data Display & Save} in Engine Control System Diagnosis.
10. Select {Data Display} in Data Display Menu.
11. Start the engine, and read the engine idle speed.
12. Check the idle speed when unloaded. (With headlights, heater fan, rear defroster, radiator fan, air conditioning, etc. OFF)
Idle speed [No load and gears in neutral]: 750 ± 100 rpm
13. Check the idle speed when loaded. (Turn the air conditioning switch to "ON" and operate the compressor for at least one minute before measurement.)
Idle speed [A/C "ON", and gears in neutral]: 875 ± 100 rpm
NOTE: Idle speed cannot be adjusted manually, because the idle speed is automatically adjusted. If the idle speed is out of specifications, refer to General Diagnosis Table under "Engine Control System".