LAN SYSTEM (DIAGNOSTICS) > General Diagnostic Table
INSPECTION
Item | Operation | Specifications | Note | |
YES | NO | |||
Diagnostic code | DTC is displayed when inspecting all DTCs. | Perform the diagnosis according to DTC. | System is normal. | — |
Speedometer | Faster vehicle speed than the actual speed is displayed. | VDC CM data may not be received. | System is normal. | Also, check vehicle speed pulse circuit. |
Fuel gauge | Fuel is present, but displayed less than actual amount. | Communication error may be present. | System is normal. | Also, check the fuel gauge. |
Fuel level warning light | Fuel is present, but the light illuminates. | Communication error may be present. | System is normal. | Also, check the fuel gauge. |
Engine coolant temperature light | Engine coolant temperature light blinks in red and blue alternately. | Communication error may be present. | System is normal. | Check the engine coolant light related items. |
[S], [I] or [S#] indicator | Blinking. | Communication error may be present. | System is normal. | Check the intelligent switch. |
VDC indicator | Illuminating. | Communication error may be present. | System is normal. | Check that VDC is not operating. |
VDC OFF indicator | Illuminating. | Communication error may be present. | System is normal. | Check that VDC is not OFF. |
Brake warning, etc. | Illuminating. | Brake fluid may be low in amount, or communication error may be present. | System is normal. | Check brake related items. |
Shift position | Not displayed. | Communication error may be present. | System is normal. | Also, check AT system. |
AT temperature light | Blinking. | Communication error may be present. | System is normal. | Also, check AT system. |
Door indicator | Not displayed. | Communication error may be present. | System is normal. | Check the door switch. |
Clearance indicator | Not illuminating. | Communication error may be present. | System is normal. | Check the combination switch. |
Hi beam indicator | Not illuminating. | Communication error may be present. | System is normal. | Check the combination switch. |
Front fog indicator | Not illuminating. | Communication error may be present. | System is normal. | Check the combination switch. |
Illumination | Illuminating at the maximum brightness. | Communication error may be present. | System is normal. | Also, check the illumination switch. |
Cruise control indicator | Not illuminating. | Communication error may be present. | System is normal. | Check the cruise control system. |
AWD indicator | Not illuminating. | Communication error may be present. | System is normal. | Check TCM. |
Hill hold indicator | Not illuminating. | Communication error may be present. | System is normal. | Also, check VDC CM. |
Electrical component location Location
List of diagnostic trouble code (dtc) ListAssembly
EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)(H4DO) > Leak Check Valve AssemblyASSEMBLY1. Install the bracket to the leak check valve assembly.Tightening torque:18 N·m (1.8 kgf-m, 13.3 ft-lb)2. Install the drain tube to the leak check valve assembly.CAUTION:• Check that there is n ...
Air filtration system
The Subaru Ascent is equipped with an advanced air filtration system integrated
into the climate control unit, designed to improve cabin air quality by capturing
dust, pollen, and other airborne particles.
To maintain optimal performance of the Subaru Ascent air conditioning and ventilation
s ...
Inspection
OCCUPANT DETECTION SYSTEM (DIAGNOSTICS) > Subaru Select MonitorINSPECTION1. COMMUNICATION FOR INITIALIZING THE AIRBAG SYSTEM IS IMPOSSIBLEDETECTING CONDITION:Defective harness connectorTROUBLE SYMPTOM:Communication is impossible between the airbag control module and the Subaru Select Monitor.NOTE ...