Scheme 565
Scheme 566
CHECK
Check the following items when problem has occurred.
Note. Use copies of this page for interviewing customers.
Scheme 567
CAUTION
- Supplemental Restraint System "Airbag" The airbag system wiring harness is routed near the transmission control module (TCM). All airbag system wiring harness and connectors are colored yellow. Do not use 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 the ECM, TCM or each sensor, use a tapered pin with a 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 (0.0256 in).
BATTERY
Measure the battery voltage and specific gravity of electrolyte.
- Standard voltage: 12V 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)
Scheme 568
ATF LEVEL
Make sure the ATF level is in the specification. See INSPECTION , ATF.
Scheme 569
FRONT DIFFERENTIAL OIL LEVEL
Make sure the front differential oil level is in the specification. See INSPECTION , Differential Gear Oil.
Scheme 570
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 the selector lever. |
Scheme 571
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Scheme 578
Scheme 579
| Number | Description |
|---|---|
| 1 | Soleniod 1 |
| 2 | Solenoid 2 |
| 3 | Line Pressure Duty Solenoid |
| 4 | Low Clutch Timing Solenoid |
| 5 | Lock-Up Duty Solenoid |
| 6 | 2-4 Brake Duty Solenoid |
| 7 | 2-4 Brake Timing Solenoid |
| 8 | Transfer Duty Solenoid |
LEGEND FOR (Scheme 579)
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- Prepare the Subaru Select Monitor kit.
- Connect the diagnosis cable to Subaru Select Monitor.
- Insert the cartridge into Subaru Select Monitor. See «PREPARATION TOOL»(/subaru/impreza-wrx/gdgg-2002-2005/remont/automatic-trans/#automatic-transmission-diagnostics) .
- Connect the Subaru Select Monitor to data link connector. Data link connector located in the lower portion of the instrument panel (on the driver's side). Connect the diagnosis cable to data connector. CAUTION: 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 displayed the information of transmission type.
- On the << Transmission Diagnosis >> display screen, select the {Diagnostic Code(s) Display} and press the [YES] key.
- On the << Diagnostic Code(s) Display >> display screen, select the {Latest Diagnostic Code(s)} or {Memorized Diagnostic Code(s)} and press the [YES] key. NOTE: For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. For details concerning diagnostic trouble codes, see «DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)»(/subaru/impreza-wrx/gdgg-2002-2005/remont/automatic-trans/#automatic-transmission-diagnostics__diagnostic-procedure-with-diagnostic-trouble-code) .
Scheme 594
- 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 displayed the information of transmission type.
- 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 the 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 displayed the information of transmission type.
- 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 the 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 595
The AT OIL TEMP warning light flashes the code corresponding to the faulty part.
The long segment (1.2 seconds on) indicates a "ten", and the short segment (0.2 seconds on) signifies a "one".
Scheme 596
WITH SUBARU SELECT MONITOR
Refer to SUBARU SELECT MONITOR for information about how to obtain and understand trouble codes. See OPERATION , Subaru Select Monitor.
OPERATION
Raise the vehicle using a garage jack and place on safety stands or drive the vehicle onto free rollers.
| WARNING | Before raising the vehicle, ensure parking brakes are applied. Do not use a pantograph jack in place of a safety stand. Secure a rope or wire to the front and rear towing or tie-down hooks to prevent the lateral runout of front wheels. Do not abruptly depress/release clutch pedal or accelerator pedal during works even when the engine is operating at low speeds since this may cause vehicle to jump off free rollers. In order to prevent the vehicle from slipping due to vibration, do not place any wooden blocks or similar items between the safety stands and the vehicle. Since the rear wheels will also rotate, do not place anything near them. Also, make sure that nobody goes in front of the vehicle. |
Scheme 597
WITHOUT SUBARU SELECT MONITOR
Current trouble codes shown on the display are cleared by turning the ignition switch OFF after conducting the on-board diagnostics operation. Previous trouble codes, however, cannot be cleared since they are stored in the TCM memory which is operating on the back-up power supply. These trouble codes can be cleared by removing the specified TCM connector for at least 2 minutes.
CLEAR MEMORY
Non-turbo model
- Remove TCM connector (B55)
Turbo model
- Remove TCM connector (B56)
- The TCM connector is located in the line to the memory back-up power supply of the TCM. Removal of this fuse clears the previous trouble codes stored in the TCM memory.
- Be sure to remove the TCM connector for at least the specified length of time. Otherwise, trouble codes may not be cleared.
Refer to SUBARU SELECT MONITOR for information about how to clear trouble codes. See CLEAR MEMORY MODE , OPERATION, Subaru Select Monitor.
INSPECTION
When any on-board diagnostics item is malfunctioning, the display on the power indicator light blinks from the time the malfunction is detected after starting the engine until the ignition switch is turned OFF. The malfunctioning part or unit can be determined by a trouble code during the on-board diagnostics operation. Problems which occurred previously can also be identified through the memory function. If the AT OIL TEMP warning does not show a problem (although a problem is occurring), the problem can be determined by checking the performance characteristics of each sensor using the select monitor. Indicator signal is as shown in the figure.
Scheme 598
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.
Scheme 599
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- Faulty harness connector
- Select the monitor communication failure.
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DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
| DTC | Description |
|---|---|
| DTC 11 | ENGINE SPEED SIGNAL |
| DTC 23 | MASS AIR FLOW SIGNAL |
| DTC 27 | ATF TEMPERATURE SENSOR |
| DTC 31 | THROTTLE POSITION SENSOR |
| DTC 33 | FRONT VEHICLE SPEED SENSOR |
| DTC 36 | TORQUE CONVERTER TURBINE SPEED SENSOR |
| DTC 38 | TORQUE CONTROL SIGNAL |
| DTC 45 | INTAKE MANIFOLD PRESSURE SIGNAL |
| DTC 71 | SHIFT SOLENOID 1 |
| DTC 72 | SHIFT SOLENOID 2 |
| DTC 73 | LOW CLUTCH TIMING SOLENOID |
| DTC 74 | 2-4 BRAKE TIMING SOLENOID |
| DTC 75 | LINE PRESSURE DUTY SOLENOID |
| DTC 76 | 2-4 BRAKE DUTY SOLENOID |
| DTC 77 | LOCK-UP DUTY SOLENOID |
| DTC 79 | TRANSFER DUTY SOLENOID |
| DTC 93 | REAR VEHICLE SPEED SENSOR |
DTC INDEX
Engine speed input signal circuit is open or shorted.
- No lock-up (after engine warm-up).
- AT OIL TEMP warning light remains on when the vehicle speed is "O".
Scheme 608
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Input signal circuit of TCM from ECM is open or shorted.
Excessive shift shock.
Scheme 611
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Input signal circuit of TCM to ATF temperature sensor is open or shorted.
Excessive shift shock.
Scheme 614
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Input signal circuit of throttle position sensor is open or shorted.
Shift point too high or too low; excessive shift shock; excessive tight corner "braking".
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- The vehicle speed signal is abnormal.
- The circuit in combination meter is faulty.
- The harness connector between TCM and vehicle speed sensor is in short or open.
- Erroneous idling.
- Engine stalls.
- Poor driving performance.
Scheme 624
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Scheme 627
Input signal circuit of TCM is open or shorted.
Excessive shift shock.
Scheme 628
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Scheme 630
- The signal circuit is open or shorted.
Excessive shift shock.
Scheme 631
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Input signal circuit of TCM from ECM is open or shorted.
Excessive shift shock.
Scheme 635
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Scheme 637
Output signal circuit of shift solenoid 1 is open or shorted.
Does not shift.
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Scheme 640
Output signal circuit of shift solenoid 2 is open or shorted.
Does not shift.
Scheme 641
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Output signal circuit of low clutch timing solenoid is open or shorted.
Excessive shift shock.
Scheme 645
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Output signal circuit of 2-4 brake timing solenoid is open or shorted.
Excessive shift shock.
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Output signal circuit of line pressure duty solenoid is open or shorted.
Excessive shift shock.
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Output signal circuit of 2-4 brake duty solenoid is open or shorted.
Excessive shift shock.
Scheme 659
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Output signal circuit of lock-up duty solenoid is open or shorted.
No "lock-up" (after engine warm-up).
Scheme 664
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Output signal circuit of transfer duty solenoid is open or shorted.
Excessive "braking" in tight corners.
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Input signal circuit of TCM is open or shorted.
No lock-up or excessive tight comer "braking".
Scheme 674
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- LED does not come on even if FWD switch is ON.
- FWD switch circuit is open or short.
Scheme 679
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Input signal circuit of inhibitor switch is open or shorted.
- Shift characteristics are erroneous.
- Engine brake is not effected when selector lever is in "3" range.
- Engine brake is not effected when selector lever is in "2" range.
- Engine brake is not effected when selector lever is in "1" range.
