1.CHECK PRE-INSPECTION. 1) Ask the customer when and how the trouble occurred using the interview check list. Check List for Interview 2) Before performing diagnostics, check the following items which might affect CVT problems. • General inspection General Description > INSPECTION • Disconnection of harness connector • Visual check for harness damage • Oil leakage • Stall speed test Stall Test Stall Test • Secondary pressure test Secondary Pressure (Line Pressure) Test Secondary Pressure (Line Pressure) Test • Transfer clutch pressure test Transfer Clutch Pressure Test Transfer Clutch Pressure Test • Time lag test Time Lag Test Time Lag Test • Road test Road Test Road Test • Inhibitor switch Inhibitor Switch Inhibitor Switch | Is the item that is thought to influence the CVT problem working properly- | Basic Diagnostic Procedure > PROCEDURE | Repair the items which may be affecting the CVT trouble. |
2.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- | Basic Diagnostic Procedure > PROCEDURE | Check the AT OIL TEMP light. |
3.CHECK AT OIL TEMP LIGHT. Start the engine and wait for 2 seconds or more. | Does the AT OIL TEMP light blink- | Basic Diagnostic Procedure > PROCEDURE | Basic Diagnostic Procedure > PROCEDURE |
4.CHECK DTC DISPLAY. Read the DTC. NOTE: If the communication function of Subaru Select Monitor cannot be executed normally, check the communication circuit. Diagnostic Procedure for Subaru Select Monitor Communication > COMMUNICATION FOR INITIALIZING IMPOSSIBLE | Is DTC displayed on Subaru Select Monitor- | Record the DTC, time stamp and freeze frame data.
Basic Diagnostic Procedure > PROCEDURE NOTE: • For the time stamp, refer to LAN section. General Description > CAUTION • Depending on DTCs, time stamp may not be stored. | Basic Diagnostic Procedure > PROCEDURE |
5.PERFORM GENERAL DIAGNOSTICS. 1) Inspect using “Diagnostic Procedure without Diagnostic Trouble Code (DTC)”. Diagnostic Procedure without Diagnostic Trouble Code (DTC) 2) Inspect using “Diagnostics with Phenomenon”. Diagnostics with Phenomenon 3) Perform the Inspection Mode. Inspection Mode | Is DTC displayed on Subaru Select Monitor- | Basic Diagnostic Procedure > PROCEDURE | |
6.PERFORM DIAGNOSIS. 1) Inspect by referring to “Diagnostic Procedure with Diagnostic Trouble Code (DTC)”. Diagnostic Procedure with Diagnostic Trouble Code (DTC) NOTE: For the DTC table, refer to “List of Diagnostic Trouble Code (DTC)”. List of Diagnostic Trouble Code (DTC) 2) Repair the trouble cause. 3) Perform the Clear Memory Mode. 4) Perform the Inspection Mode. Inspection Mode | Is DTC displayed on Subaru Select Monitor- | Inspect by referring to “Diagnostic Procedure with Diagnostic Trouble Code (DTC)”. Diagnostic Procedure with Diagnostic Trouble Code (DTC) | |
Active test operation
Check list for interview check