Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSSUBARU2022IMPREZA BASE, 4D SEDAN, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSAXLE (DIAGNOSTICS)BASIC DIAGNOSTIC PROCEDUREPROCEDURE

2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans

Basic Diagnostic Procedure: Procedure

2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION Procedure

CHECK PRE-INSPECTION .
1. Ask the customer when and how the trouble occurred using the interview check list. Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>CHECK LIST FOR INTERVIEW .
2. Before performing diagnostics, check the following items which might affect CVT problems.
  - General inspection Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>GENERAL DESCRIPTION>INSPECTION .
  - Disconnection of harness connector
  - Visual check for harness damage
  - Oil leakage
  - Stall test Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>STALL TEST .
  - Secondary pressure test Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>SECONDARY PRESSURE (LINE PRESSURE) TEST .
  - Transfer clutch pressure test Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSFER CLUTCH PRESSURE TEST .
  - Time lag test Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TIME LAG TEST .
  - ROAD TEST Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>ROAD TEST .
  - Inhibitor switch Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>INHIBITOR SWITCH .
Is the check result OK?

Yes: Go to 2.

No: Repair the items which may be affecting the CVT trouble.
CHECK AT OIL TEMP LIGHT .
Turn the ignition switch to ON and wait for at least 2 seconds.

Does the AT OIL TEMP light illuminate?

Yes: Go to 3.

No: Check the AT OIL TEMP light.
CHECK AT OIL TEMP LIGHT .
Start the engine and wait for 2 seconds or more.

Does the AT OIL TEMP light blink?

Yes: Go to 4.

No: Go to 5.
CHECK DTC .
Read the DTC of [Transmission] using the Subaru Select Monitor. Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>DIAGNOSTIC TROUBLE CODE (DTC) .

NOTE:
If the communication function of Subaru Select Monitor cannot be executed normally, check the communication circuit. Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>DIAGNOSTIC PROCEDURE FOR SUBARU SELECT MONITOR COMMUNICATION>COMMUNICATION FOR INITIALIZING IMPOSSIBLE .

Are any DTCs displayed?

Yes: Record the DTC, time stamp and freeze frame data. Go to 6.

No: Go to 5.
PERFORM GENERAL DIAGNOSTICS .
1. Inspect using "Diagnostic Procedure without Diagnostic Trouble Code (DTC)". Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>DIAGNOSTIC PROCEDURE WITHOUT DIAGNOSTIC TROUBLE CODE (DTC) .
2. Inspect using "Diagnostics with Phenomenon". Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>DIAGNOSTICS WITH PHENOMENON .
3. Perform the road test. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>ROAD TEST .
4. Read the DTC of [Transmission] using the Subaru Select Monitor. Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>DIAGNOSTIC TROUBLE CODE (DTC) .
Are any DTCs displayed?

Yes: Go to 6.

No: Finish the diagnosis.
PERFORM DIAGNOSIS .
1. Inspect by referring to "Diagnostic Procedure with Diagnostic Trouble Code (DTC)". Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) .
  NOTE:
  For the DTC table, refer to "Diagnostic Trouble Code (DTC)". Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST .
2. Repair the trouble cause.
3. Using the Subaru Select Monitor, perform the clear memory of [Transmission]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
4. Execute the inspection mode. Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>INSPECTION MODE .
5. Check the readiness code of [Transmission] using Subaru Select Monitor and confirm that the diagnosis is completed. Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>ALL READINESS DIAGNOSTIC CODE(S) .
6. Read the DTC of [Transmission] using the Subaru Select Monitor. Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>DIAGNOSTIC TROUBLE CODE (DTC) .
Are any DTCs displayed?

Yes: Inspect by referring to "Diagnostic Procedure with Diagnostic Trouble Code (DTC)". Ref. to TRANSMISSION (DIAGNOSTICS) (IMPREZA MODEL)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) .

No: Finish the diagnosis.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.