MECHANICAL(H4DO) > Idle Speed
INSPECTION
1. Before checking the idle speed, check the following item:
(1) Check the air cleaner element is free from clogging, ignition timing is correct, spark plugs are in good condition, and hoses are connected properly.
(2) Check the malfunction indicator light does not illuminate.
2. Warm up the engine.
3. Read the engine idle speed using Subaru Select Monitor. Subaru Select Monitor > OPERATION">
NOTE:
• Idle speed cannot be adjusted manually, because the idle speed is automatically adjusted.
• If idle speed is out of standard, refer to the General Diagnosis Table under “Engine Control System”. Basic Diagnostic Procedure">
(1) Check the idle speed when no-loaded. (Headlight, blower fan, rear defroster, radiator fan, A/C and etc. are OFF)
Idle speed (No load, and for CVT model, select lever in “P” or “N” range, for MT model, gear shift lever in neutral position.):
Standard
650±100 r/min
(2) Check the idle speed when loaded. (Turn the A/C switch to ON and operate the compressor for at least one minute before measurement.)
Idle speed (A/C on, and for CVT model, select lever in “P” or “N” range, for MT model, gear shift lever in neutral position.):
Standard
800 — 900±50 r/min
Fuel pressure Inspection
Ignition timing InspectionList of diagnostic trouble code (dtc) List
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS) > List of Diagnostic Trouble Code (DTC)LISTDTCItemContent of diagnosisReferenceB1650OCCUPANT DETECTION SYSTEM MALFUNCTION• Occupant detection sensor is faulty.• Occupant detection control module is faulty.• Occupant detection harness is fa ...
Precautions against vehicle modification
WARNING
To maintain the full safety performance of the Subaru Ascent SRS airbag
system, no modifications should be made to any related components, wiring, or
structural elements. Unauthorized changes may lead to accidental airbag deployment
or system failure, significantly increasing th ...
Engine oil
CAUTION
If the oil level gauge in your Subaru Ascent does not slide out easily,
gently rotate it left and right before pulling. Applying excessive force may
lead to sudden release and possible injury.
Always use engine oil that meets the recommended grade and viscosity
specified for t ...