Basic Diagnostic Procedure: Procedure

WARNING: This page is about a different variant/trim than selected.

CHECK PRE-INSPECTION.
1. Ask the customer when and how the trouble occurred using the Check List for Interview. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>CHECK LIST FOR INTERVIEW .
2. Before performing diagnostics, check the following items which might affect CVT problems.
  - General inspection Refer to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>GENERAL DESCRIPTION>INSPECTION .
  - Disconnection of harness connector
  - Visual check for harness damage
  - Oil leakage
  - Stall speed test Refer to CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>STALL TEST .
  - Secondary pressure test Refer to CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>SECONDARY PRESSURE (LINE PRESSURE) TEST .
  - Transfer clutch pressure test Refer to CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>TRANSFER CLUTCH PRESSURE TEST .
  - Time lag test Refer to CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>TIME LAG TEST .
  - Road test Refer to CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>ROAD TEST .
  - Inhibitor switch Refer to CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>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 DISPLAY.
Read the DTC.

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

Is DTC displayed on Subaru Select Monitor?

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

Go to 6.
NOTE:
- For the time stamp, refer to LAN information . Refer to LAN SYSTEM (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION>TIME STAMP .
- Depending on DTCs, time stamp may not be stored.
No : Go to 5.
PERFORM GENERAL DIAGNOSTICS.
1. Inspect using "Diagnostic Procedure without Diagnostic Trouble Code (DTC)". Refer to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITHOUT DIAGNOSTIC TROUBLE CODE (DTC) .
2. Inspect using "Diagnostics with Phenomenon". Refer to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON .
3. Perform the Inspection Mode. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>INSPECTION MODE .
4. Read the DTC.
Is DTC displayed on Subaru Select Monitor?

Yes : Go to 6.

No : Finish the diagnosis.
PERFORM DIAGNOSIS.
1. Inspect by referring to "Diagnostic Procedure with Diagnostic Trouble Code (DTC)". Refer to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) .
  NOTE: For the DTC table, refer to "List of Diagnostic Trouble Code (DTC)". Refer to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .
2. Repair the trouble cause.
3. Perform the Clear Memory Mode.
4. Perform the Inspection Mode. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>INSPECTION MODE .
5. Read the DTC.
Is DTC displayed on Subaru Select Monitor?

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

No : Finish the diagnosis.