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Continuously Variable Transmission (Diagnostics): Overview Subaru Forester SJ

Automatic Trans 2 illustrations ~467 words

OPERATION OF SHIFT SELECT LEVER

Make sure there is no noise, dragging or contact pattern in each select lever range.

WARNINGStop the engine while checking operation of the select lever.

OPERATION

  1. For detailed operation procedures, refer to "Subaru Select Monitor operation manual".
  2. For details concerning DTC, refer to "List of Diagnostic Trouble Code (DTC)". < Ref. to «LIST OF DIAGNOSTIC TROUBLE CODE (DTC)»(ref-662155-S09103807922014101300000). >

For detailed operation procedures, refer to "Subaru Select Monitor operation manual".

CAUTIONIf the AT learning value is cleared, learned control memory is cleared. If the AT learning value is cleared, perform learning. < Ref. to LEARNING CONTROL. >

GENERAL DESCRIPTION

  1. Follow the messages displayed on the Subaru Select Monitor when working.
  2. When the following work is performed, perform learning work for the transmission.

Replacement of TCM/Replacement or disassembly of transmission assembly/Replacement of control valve body/Clearing AT leaning value is executed.

The AT OIL TEMP light illuminates or blinks, when the ATF temperature is high and malfunction occurs in CVT.

Scheme 907

Scheme 907: OPERATION
Scheme 907: OPERATION
  1. When normal AT OIL TEMP light always illuminates when the ignition switch is ON (engine OFF). Light goes off after two seconds from engine ON.
  2. When ATF temperature is high AT OIL TEMP light illuminates when the ATF temperature is abnormally high with engine ON.
  3. When malfunction is detected AT OIL TEMP light blinks at 2 Hz when the TCM detects the malfunction of CVT with engine ON. In this case, inspect using "Diagnostic Procedure with Diagnostic Trouble Code (DTC)". < Ref. to «DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)»(ref-662155-S33892300442014101300000). >
  4. When AT learning is not finished AT OIL TEMP light repeats "Blinking at 4 Hz --> Turning OFF" every two seconds, when the AT learning is not finished with engine ON. In this case, perform the "Learning". (During AT learning, the light blinks at 2 Hz or illuminates.) < Ref. to «LEARNING CONTROL»(ref-662155-S04758958322014101300000). >

If the AT OIL TEMP light does not illuminate, or illumination patterns are not as above, check the AT OIL TEMP light circuit. < Ref. to INSPECTION, AT OIL TEMP Warning Light Display. >

AWD light illuminates or blinks, when the AWD is in special control condition and AWD has malfunction.

Scheme 908

Scheme 908: OPERATION
Scheme 908: OPERATION
  1. When normal AWD light always illuminates when the ignition switch is ON (engine OFF). Light goes off after two seconds from engine ON.
  2. When FF mode is selected AWD light illuminates, when the AWD ON/OFF switching function is "FF mode" with engine ON.
  3. When malfunction is detected AWD light blinks at 2 Hz when any of following malfunctions are detected with engine ON. When tire with different diameter is installed, or air pressure of any of four wheels is excessively low When "Rear differential inspection mode" is judged as NG < Ref. to «REAR DIFFERENTIAL INSPECTION MODE»(ref-662127-S24575892702014101300000). >

If the AWD light does not illuminate, or illumination patterns are not as above, check the AWD light circuit. < Ref. to INSPECTION, AWD Warning Light Display. >

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