Automatic Transmission (Diagnostics) (H4SO): Other

CHECK

Check the following items when problem has occurred.

Note. Use copies of this page for interviewing customers.

Scheme 618

Scheme 618: CHECK

CAUTION

Supplemental Restraint System "Airbag" The airbag system wiring harness is routed near the transmission control module (TCM).

CAUTION

All airbag system wiring harness and connectors are colored yellow. Do not use an electrical test equipment on these circuit. Be careful not to damage the airbag system wiring harness when performing diagnostics and servicing the TCM. Measurement When measuring the voltage and resistance of ECM, TCM or each sensor, use a tapered pin with diameter of less than 0.64 mm (0.025 in) in order to avoid poor contact. Do not insert the pin more than 0.65 mm (0.256 in).

Scheme 619

Scheme 619: INSPECTION

Scheme 620

Scheme 621

Scheme 622

Scheme 623

BATTERY Measure the battery voltage and specific gravity of electrolyte. Standard voltage: 12 V or more Specific gravity: Above 1.260
TRANSMISSION GROUND Make sure that the ground terminal bolt is tightened securely. Chassis side Tightening torque: 13 N.m (1.3 kgf-m, 9.4 ft-lb)
ATF LEVEL Make sure that ATF level is in the specification. Refer to «INSPECTION»(ref-208395-S08573280712005120700000) , Automatic Transmission Fluid.
FRONT DIFFERENTIAL OIL LEVEL Make sure that the front differential oil level is in specification. Refer to «INSPECTION»(ref-208395-S35747931822005120700000) , Differential Gear Oil.
OPERATION OF SHIFT SELECT LEVER Make sure there is no abnormal noise, dragging or contact pattern in each select lever range. WARNING: Stop the engine while checking operation of selector lever. Without SPORT shift With SPORT shift

Scheme 624

Scheme 624: PREPARATION TOOL

Scheme 625

SPECIAL TOOLS
GENERAL PURPOSE TOOLS

Scheme 626

Scheme 626: LOCATION

Scheme 627

Scheme 628

Scheme 629

Scheme 630

CONTROL MODULE
SENSOR
SOLENOID

Scheme 631

Scheme 631: ELECTRICAL SPECIFICATION

Scheme 632

Scheme 633

Scheme 634

Scheme 635

Scheme 636

Scheme 637

Scheme 638

Scheme 639

Scheme 640

Scheme 641

Scheme 642

WITH VDC SYSTEM OR SPORT SHIFT
WITHOUT VDC SYSTEM AND SPORT SHIFT (EXCEPT U5 MODEL)
WITHOUT SPORT SHIFT (U5 MODEL)

Scheme 643

Scheme 643: SCHEMATIC

Scheme 644

EXCEPT U5 MODEL
U5 MODEL

MEASUREMENT

Only for models with VDC system, measure input/output signal voltage.

Scheme 645

Scheme 645: MEASUREMENT

WAVEFORM

Scheme 646

Scheme 646: OPERATION

Scheme 647

Scheme 648

Scheme 649

Scheme 650

READ DIAGNOSTIC TROUBLE CODE (DTC) Prepare the Subaru Select Monitor kit. Connect the diagnosis cable to Subaru Select Monitor. Insert the cartridge into Subaru Select Monitor. Refer to «PREPARATION TOOL»(ref-208397-S07324333902005120700000) , General Description. Connect the Subaru Select Monitor to data link connector. Data link connector located in the lower portion of instrument panel (on driver's side). Connect the diagnosis cable to data link connector. NOTE: Do not connect scan tools except for Subaru Select Monitor and OBD-II general scan tool. Turn the ignition switch to ON (engine OFF) and Subaru Select Monitor switch to ON. On the < < Main Menu > > display screen, select the {Each System Check} and press the [YES] key. On the < < System Selection Menu > > display screen, select the {Transmission Control System} and press the [YES] key. Press the [YES] key after the information of transmission type is displayed. On the < < Transmission Diagnosis > > display screen, select the {DTC Display} and press the [YES] key. On the < < DTC Display > > display screen, select the {Memorized DTC} and press the [YES] key. NOTE: For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. For details concerning the DTC, refer to «LIST OF DIAGNOSTIC TROUBLE CODE (DTC)»(ref-208397-S40827350602005120700000) .
READ CURRENT DATA On the < < Main Menu > > display screen, select the {Each System Check} and press the [YES] key. On the < < System Selection Menu > > display screen, select the {Transmission Control System} and press the [YES] key. Press the [YES] key after the information of transmission type is displayed. On the < < Transmission Diagnosis > > display screen, select the {Current Data Display & Save} and press the [YES] key. On the < < Data Display Menu > > display screen, select the {Data Display} and press the [YES] key. Using the scroll key, move the display screen up or down until desired data is shown. A list of the support data is shown in the following table. NOTE: For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.
CLEAR MEMORY MODE On the < < Main Menu > > display screen, select the 2. Each System Check} and press the [YES] key. On the < < System Selection Menu > > display screen, select the {Transmission Control System} and press the [YES] key. Press the [YES] key after the information of transmission type is displayed. On the < < Transmission Diagnosis > > display screen, select the {Clear Memory} and press the [YES] key. When the "Done" and "Turn Ignition Switch OFF" are shown on display screen, turn the Subaru Select Monitor and ignition switch to OFF. NOTE: For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.

Scheme 651

Scheme 651: OPERATION

Scheme 652

WITHOUT SUBARU SELECT MONITOR The way of reading DTC The AT OIL TEMP warning light flashes the code corresponding to faulty part. The long segment (1.2 sec on) indicates a "ten", and the short segment (0.2 sec on) signifies a "one".
WITH SUBARU SELECT MONITOR Refer to Subaru Select Monitor for information about how to obtain and understand DTC . Refer to «SUBARU SELECT MONITOR»(ref-208397-S24197036892005120700000) .

AT OIL TEMP WARNING LIGHT DOES NOT COME ON OR GO OFF

DIAGNOSIS

The AT OIL TEMP warning light circuit is open or shorted.

TROUBLE SYMPTOM

When the ignition switch is turned to ON (engine OFF), AT OIL TEMP warning light does not illuminate.
When the on-board diagnostics is performed, AT OIL TEMP warning light remains illuminated.