Diagnostics: Diagnosis Subaru Forester SF рестайлинг

Diagnosis

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

Trouble Symptom

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

AT Oil Temp Indicator Light Wiring Diagram. Scheme 398

Scheme 399

Scheme 400

Scheme 401

Scheme 402

Scheme 403

1. 7A1: CHECK AT OIL TEMP INDICATOR LIGHT. Turn ignition switch to ON (engine OFF). CHECK: Does AT OIL TEMP indicator light illuminate? YES: Go to step 7A4. NO: Go to step 7A2.
2. 7A2: CHECK FUSE (NO. 5). Remove fuse (No. 5). CHECK: Is the fuse (No. 5) blown out? YES: Replace fuse (No. 5). If replaced fuse (No. 5) is blown out easily, repair short circuit in harness between fuse (No. 5) and combination meter. NO: Go to step 7A3.
3. 7A3: CHECK AT OIL TEMP INDICATOR LIGHT. Turn ignition switch to OFF. Remove combination meter. Remove ATF OIL TEMP indicator light bulb from combination meter. CHECK: Is ATF OIL TEMP indicator light bulb OK? YES: Go to step 7A5. NO: Replace AT OIL TEMP indicator light bulb.
4. 7A4: CHECK AT OIL TEMP INDICATOR LIGHT. Perform on-board diagnostics. See «ON-BOARD DIAGNOSTICS»(ref-175204-S26114078982005041800000). CHECK: Does AT OIL TEMP indicator light blink? YES: A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in TCM, inhibitor switch and combination meter. NO: Go to step 7A8.
5. 7A5: CHECK HARNESS CONNECTOR BETWEEN COMBINATION METER AND IGNITION SWITCH. Turn ignition switch to ON (engine OFF). Measure voltage between combination meter connector and chassis ground. Connector & Terminal (i11) No. 2 (+) - Chassis ground (-): (Scheme 399): Measuring Voltage Between Combination Meter Connector & Chassis Ground CHECK: Is voltage more than 10 V? YES: Go to step 7A6. NO: Repair open circuit in harness between combination meter and battery.
6. 7A6: CHECK OPEN CIRCUIT OF HARNESS. Disconnect connector from combination meter connector. Measure resistance of harness between TCM and combination meter connector. Connector & Terminal (B54) No. 3 - (i10) No. 15: (Scheme 400): Measuring Resistance Of Harness Between TCM & Combination Meter Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 7A7. NO: Repair open circuit in harness between TCM and combination meter, and poor contact in coupling connector.
7. 7A7: CHECK INPUT SIGNAL FOR TCM. Connect connector to combination meter. Turn ignition switch to ON (engine OFF). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 3 (+) - Chassis ground (-): (Scheme 401): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage less than 1 V? YES: Even if AT OIL TEMP indicator lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in TCM. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
8. 7A8: CHECK INHIBITION SWITCH. Connect Subaru Select Monitor to data link connector. (Scheme 402): Identifying Location Data Link Connector (DLC) Turn ignition switch to ON. Subaru Select Monitor to ON. Read data of range switch using Subaru Select Monitor. Range switch is indicated in ON <=> OFF. CHECK: When each range is selected, does LED of Subaru Select Monitor light up? YES: Go to step 7A9. NO: Check inhibitor switch circuit, see «CHECK INHIBITOR SWITCH»(ref-175204-S27328873982005041800000).
9. 7A9: CHECK SHORT CIRCUIT OF HARNESS. Remove combination meter. Disconnect connector from combination meter. Measure resistance of harness connector between TCM and combination meter. Connector & Terminal (B54) No. 3 - Chassis ground: (Scheme 403): Measuring Resistance Of Harness Connector Between TCM & Combination Meter CHECK: Is the resistance less than 1 Mohm? YES: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000). NO: Repair short circuit in harness between combination meter connector and TCM connector.

Control Module Power Supply & Ground Line Circuits. Scheme 404

Scheme 405

Scheme 406

Scheme 407

Scheme 408

Scheme 409

Scheme 410

1. 7B1: CHECK FUSE (NO. 4). Remove fuse (No. 4). CHECK: Is the fuse (No. 4) blown out? YES: Replace fuse (No. 4). If replaced fuse (No. 4) has blown out easily, repair short circuit in harness between fuse (No. 4) and TCM. NO: Go to step 7B2.
2. 7B2: CHECK BACK-UP POWER SUPPLY CIRCUIT. Turn ignition switch to ON. Measure back-up power supply voltage between TCM connector terminal. Connector & Terminal (B55) No. 6 (+) - No. 19 (-): (Scheme 405): Measuring Back-Up Power Supply Voltage Between TCM Connector Terminal CHECK: Is the voltage more than 10 V? YES: Go to step 7B3. NO: Repair open circuit in harness between fuse (No. 4) and TCM, and poor contact in coupling connector.
3. 7B3: CHECK FUSE (NO. 5). Remove fuse (No. 5). CHECK: Is the fuse (No. 5) blown out? YES: Replace fuse (No. 5). If replaced fuse (No. 5) has blown out easily, repair short circuit in harness between fuse (No. 5) and TCM. NO: Go to step 7B4.
4. 7B4: CHECK IGNITION POWER SUPPLY CIRCUIT. Turn ignition switch to ON (engine OFF). Measure ignition power supply voltage between TCM connector terminal. Connector & Terminal (B54) No. 23 (+) - (B55) No. 19 (-): (Scheme 406): Measuring Ignition Power Supply Voltage Between TCM Connector Terminal. CHECK: Is the voltage more than 10 V? YES: Go to step 7B5. NO: Go to step 7B6.
5. 7B5: CHECK IGNITION POWER SUPPLY CIRCUIT. Turn ignition switch to ON (engine OFF). Measure ignition power supply voltage between TCM connector terminal. Connector & Terminal (B54) No. 24 (+) - (B55) No. 19: (Scheme 407): Measuring Ignition Power Supply Voltage Between TCM Connector Terminal CHECK: Is the voltage more than 10 V? YES: Go to step 7B6. NO: Repair open circuit in harness between TCM and battery, and poor contact in coupling connector.
6. 7B6: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B55) No. 19 - (B11) No. 16: (Scheme 408): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 7B7. NO: Repair open circuit in harness between TCM and transmission harness connector.
7. 7B7: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND TRANSMISSION GROUND. Measure resistance of harness between transmission and transmission ground. Connector & Terminal (T4) No. 16 - Transmission ground: (Scheme 409): Measuring Resistance Of Harness Between Transmission & Transmission Ground. CHECK: Is the resistance less than 1 ohm? YES: Go to step 7B8. NO: Repair open circuit in harness between transmission and transmission ground.
8. 7B8: CHECK HARNESS CONNECTOR BETWEEN INHIBITOR SWITCH AND TCM. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between inhibitor switch side connector and TCM. Connector & Terminal (B12) No. 5 - (B55) No. 19: (Scheme 410): Measuring Resistance Of Harness Between Inhibitor Switch Side Connector & TCM CHECK: Is the resistance less than 1 ohm? YES: Go to step 7B9. NO: Repair open circuit in harness between TCM and inhibitor side connector, and poor contact in coupling connector.
9. 7B9: CHECK POOR CONTACT. CHECK: Is there poor contact in control module power supply and ground line? YES: Repair poor contact and ground terminal. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Diagnostic Trouble Code (DTC) Chart. Scheme 411

How To Read Trouble Code At Indicator Light

The AT OIL TEMP indicator light flashes the code corresponding to the faulty part.

The long segment (1.2 sec on) indicates a "ten", and the short segment (0.2 sec on) signifies a "one".

How To Read Trouble Codes (At The AT Oil Temp Indicator Light). Scheme 412

Engine speed input signal circuit is open or shorted.

1. No lock-up (after engine warm-up).
2. AT OIL TEMP indicator remains on when vehicle speed is "0".

Engine Speed Input Signal Circuit. Scheme 413

Scheme 414

Scheme 415

Scheme 416

Scheme 417

1. 8C1: CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Turn ignition switch to OFF. Measure resistance of harness between TCM and ECM connector. Connector & Terminal (B55) No. 4 - (B134) No. 30: (Scheme 414): Measuring Resistance Of Harness Between TCM & ECM Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8C2. NO: Repair open circuit in harness between TCM and ECM connector.
2. 8C2: CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Measure resistance of harness between TCM connector and chassis ground. Connector & Terminal (B55) No. 4 - Chassis ground: (Scheme 415): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8C3. NO: Repair short circuit in harness between TCM and ECM connector.
3. 8C3: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8C5. NO: Go to step 8C4.
4. 8C4: CHECK INPUT SIGNAL FOR TCM. Turn ignition switch to ON (engine OFF). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B55) No. 4 (+) - Chassis ground (-): (Scheme 416): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage more than 10.5 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and ECM. NO: Go to step 8C6.
5. 8C5: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. Connect Subaru Select Monitor to data link connector. (Scheme 417): Identifying Location Data Link Connector (DLC) Start the engine, and turn Subaru Select Monitor switch to ON. Warm-up the engine until engine coolant temperature is above 80°C (176°F). Engine idling. Read data of engine speed using Subaru Select Monitor. Display shows engine speed signal value sent from ECM. CHECK: Is the revolution value the same as the tachometer reading shown on the combination meter? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and ECM. NO: Go to step 8C6.
6. 8C6: CHECK POOR CONTACT. CHECK: Is there poor contact in engine speed signal circuit? YES: Repair poor contact. NO: Go to step 8C7.
7. 8C7: CONFIRM TROUBLE CODE 11. CHECK: Replace ECM with a new one. Does the trouble code appear again, after the memory has been cleared? To replace ECM, see «ENGINE CONTROL MODULE»(ref-175204-S08951395982005042600000). YES: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000). NO: Replace ECM, see «ENGINE CONTROL MODULE»(ref-175204-S08951395982005042600000).

Input signal circuit of TCM to ATF temperature sensor is open or shorted.

Excessive shift shock.

Input Signal Circuit Of TCM To ATF Temperature Sensor. Scheme 418

Scheme 419

Scheme 420

Scheme 421

Scheme 422

Scheme 423

Scheme 424

Scheme 425

Scheme 426

Scheme 427

Scheme 428

Scheme 429

Scheme 430

1. 8D1: CHECK HARNESS CONNECTOR BETWEEN TCM AND ATF TEMPERATURE SENSOR. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B55) No. 10 - (B11) No. 12: (Scheme 419): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8D2. NO: Repair open circuit in harness between TCM and transmission connector.
2. 8D2: CHECK HARNESS CONNECTOR BETWEEN TCM AND ATF TEMPERATURE SENSOR. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B55) No. 11 - (B11) No. 11: (Scheme 420): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8D3. NO: Repair open circuit in harness between TCM and transmission connector.
3. 8D3: CHECK HARNESS CONNECTOR BETWEEN TCM AND ATF TEMPERATURE SENSOR. Measure resistance of harness between TCM connector and chassis ground. Connector & Terminal (B55) No. 10 - Chassis ground: (Scheme 421): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8D4. NO: Repair short circuit in harness between TCM and transmission connector.
4. 8D4: CHECK HARNESS CONNECTOR BETWEEN TCM AND ATF TEMPERATURE SENSOR. Measuring resistance of harness between TCM connector and chassis ground. Connector & Terminal (B55) No. 11 - Chassis ground: (Scheme 422): Measuring Resistance Of Harness Between TCM connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8D5. NO: Repair short circuit in harness between TCM and transmission connector.
5. 8D5: CHECK ATF TEMPERATURE SENSOR. Turn ignition switch to OFF. Connect connectors to transmission. Turn ignition switch to ON and start engine. Warm-up the transmission until ATF temperature reaches to 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Disconnect connector from transmission. Measuring resistance between transmission connector terminals. Connector & Terminal (T4) No. 11 - No. 12: (Scheme 423): Measuring Resistance Between Transmission Connector Terminals CHECK: Is the resistance between 275 and 375 ohm? YES: Go to step 8D6. NO: Go to step 8D13.
6. 8D6: CHECK ATF TEMPERATURE SENSOR. Turn ignition switch to ON (engine OFF). Measuring resistance between transmission connector terminals. Connector & Terminal (T4) No. 11 - No. 12: (Scheme 424): Measuring Resistance Between Transmission Connector Terminals CHECK: Does the resistance value increase while the ATF temperature decreases? YES: Go to step 8D7. NO: Go to step 8D13.
7. 8D7: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8D10. NO: Go to step 8D8.
8. 8D8: CHECK INPUT SIGNAL FOR TCM. Warm-up the transmission until ATF temperature is about 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Measuring voltage between TCM connector terminal. Connector & Terminal (B55) No. 11 (+) - No. 10 (-): (Scheme 425): Measuring Voltage Between TCM Connector Terminal CHECK: Is the voltage between 0.5 and 0.8 V? YES: Go to step 8D9. NO: Go to step 8D12.
9. 8D9: CHECK INPUT SIGNAL FOR TCM. Cool-down the transmission until ATF temperature is under 20°C (68°F). Measuring voltage between TCM connector terminal. Connector & Terminal (B55) No. 11 (+) - No. 10 (-): (Scheme 426): Measuring Voltage Between TCM Connector Terminal CHECK: Is the voltage between 2.9 and 4.9 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or contact in the ATF temperature sensor or transmission connector. NO: Go to step 8D12.
10. 8D10: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. Turn ignition switch to OFF. Connect connector to transmission. Connect Subaru Select Monitor to data link connector. see scheme 44: Identifying Location Data Link Connector (DLC) Start the engine, and turn Subaru Select Monitor switch to ON. Warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Read data of ATF temperature using Subaru Select Monitor. ATF temperature is indicated in "°F" or "°C". CHECK: Is the ATF temperature between 70 and 110°C (158 and 230°F). YES: Go to step 8D11. NO: Go to step 8D12.
11. 8D11: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. Turn ignition switch to ON (engine OFF). CHECK: Does the ATF temperature gradually decrease? YES: Even if "AT OIL TEMP" light up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the case. Repair harness or contact in the ATF temperature sensor and transmission connector. NO: Go to step 8D12.
12. 8D12: CHECK POOR CONTACT. CHECK: Is there poor contact in ATF temperature sensor circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
13. 8D13: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND ATF TEMPERATURE SENSOR. Turn ignition switch to OFF. Disconnect connector from transmission. Remove transmission connector from stay. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Drain automatic transmission fluid. CAUTION: Do not drain the automatic transmission fluid until it cools down. Remove oil pan, and disconnect connector from ATF temperature sensor connector. Measuring resistance of harness between ATF temperature sensor and transmission connector. Connector & Terminal (T4) No. 11 - (AT1) No. 2: (Scheme 427): Measuring Resistance Of Harness Between ATF Temperature Sensor & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8D14. NO: Repair open circuit in harness between ATF temperature sensor and transmission connector.
14. 8D14: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND ATF TEMPERATURE SENSOR. Measuring resistance of harness between ATF temperature sensor and transmission connector. Connector & Terminal (T4) No. 12 - (AT1) No. 1: (Scheme 428): Measuring Resistance Of Harness Between ATF Temperature Sensor & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8D15. NO: Repair open circuit in harness between ATF temperature sensor and transmission connector.
15. 8D15: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND ATF TEMPERATURE SENSOR. Measuring resistance of harness between transmission connector and transmission ground. Connector & Terminal (T4) No. 11 - Transmission ground: (Scheme 429): Measuring Resistance Of Harness Between Transmission Connector & Transmission Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8D16. NO: Repair short circuit in harness between ATF temperature sensor and transmission connector.
16. 8D16: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND ATF TEMPERATURE SENSOR. Measuring resistance of harness between transmission connector and transmission ground. Connector & Terminal (T4) No. 12 - Transmission ground: (Scheme 430): Measuring Resistance Of Harness Between Transmission Connector & Transmission Ground CHECK: Is the resistance more than 1 Mohm? YES: Replace ATF temperature sensor. NO: Repair short circuit in harness between ATF temperature sensor and transmission connector.

Input signal circuit of throttle position sensor is open or shorted.

Shift point too high or too low; engine brake not effected in "3" range: excessive shift shock; excessive tight corner "braking".

Input Signal Circuit Of Throttle Position Sensor. Scheme 431

Scheme 432

Scheme 433

Scheme 434

Scheme 435

Scheme 436

Scheme 437

Scheme 438

Scheme 439

Scheme 440

Scheme 441

1. 8E1: CHECK ENGINE GROUND TERMINALS. CHECK: Have engine ground terminals been tightened? YES: Go to step 8E2. NO: Tighten engine ground terminals.
2. 8E2: CHECK THROTTLE POSITION SENSOR. Turn ignition switch to OFF. Disconnect connector from throttle position sensor. Measuring resistance between throttle position sensor connector receptacle's terminals. Terminals No. 4 - No. 2: (Scheme 432): Measuring Resistance Between Throttle Position Sensor Connector Receptacle's Terminals CHECK: Is the resistance between 0.3 and 0.7 kohm? YES: Go to step 8E3. NO: Replace throttle position sensor, see «THROTTLE POSITION SENSOR»(ref-175204-S08470384482005042600000).
3. 8E3: CHECK THROTTLE POSITION SENSOR. Measuring resistance between throttle position sensor connector receptacle's terminals. Terminals No. 2 - No. 3: (Scheme 433): Measuring Resistance Between Throttle Position Sensor Connector Receptacle's Terminals CHECK: Is the resistance between 3.5 and 6.5 kohm? YES: Go to step 8E4. NO: Replace throttle position sensor, see «THROTTLE POSITION SENSOR»(ref-175204-S08470384482005042600000).
4. 8E4: CHECK HARNESS CONNECTOR BETEEN TCM AND THROTTLE POSITION SENSOR. Measuring resistance of harness between TCM and throttle position sensor connector. Connector & Terminal (B55) No. 2 - (E13) No. 3: (Scheme 434): Measuring Resistance Of Harness Between TCM & Throttle Position Sensor Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8E5. NO: Repair open circuit in harness between TCM and throttle position sensor connector.
5. 8E5: CHECK HARNESS CONNECTOR BETWEEN TCM AND THROTTLE POSITION SENSOR. Measuring resistance of harness between TCM and throttle position sensor connector. Connector & Terminal (B55) No. 1 - (E13) No. 4: (Scheme 435): Measuring Resistance Of Harness Between TCM & Throttle Position Sensor Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8E6. NO: Repair open circuit in harness between TCM and throttle position sensor connector.
6. 8E6: CHECK HARNESS CONNECTOR BETWEEN TCM AND THROTTLE POSITION SENSOR. Measuring resistance of harness between TCM connector and chassis ground. Connector & Terminal (B55) No. 2 - Chassis ground: (Scheme 436): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8E7. NO: Repair short circuit in harness between TCM and throttle position sensor connector.
7. 8E7: CHECK HARNESS CONNECTOR BETWEEN TCM AND THROTTLE POSITION SENSOR. Measure resistance of harness between TCM connector and chassis ground. Connector & Terminal (B55) No. 1 - Chassis ground: (Scheme 437): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8E8. NO: Repair short circuit in harness between TCM and throttle position sensor connector.
8. 8E8: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8E11. NO: Go to step 8E9.
9. 8E9: CHECK INPUT SIGNAL FOR TCM. Connect connector to throttle position sensor. Turn ignition switch to ON (engine OFF). Measure voltage between TCM connector terminals. Connector & Terminal (B55) No. 2 (+) - No. 9 (-): (Scheme 438): Measuring Voltage Between TCM Connector Terminals CHECK: Is the voltage between 0.3 and 0.7 V in throttle fully closed? YES: Go to step 8E10. NO: Go to step 8E15.
10. 8E10: CHECK INPUT SIGNAL FOR TCM. Measure voltage between TCM connector terminals. Connector & Terminal (B55) No. 2 (+) - No. 9 (-): (Scheme 439): Measuring Voltage Between TCM Connector Terminals CHECK: Is the voltage between 4.3 and 4.9 V in throttle fully open? YES: Go to step 8E13. NO: Go to step 8E15.
11. 8E11: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. Connect connectors to throttle position sensor. Connect Subaru Select Monitor to data link connector. (Scheme 440): Identifying Location Data Link Connector (DLC) Turn ignition switch to ON (engine OFF). Turn Subaru Select Monitor switch to ON. Throttle fully closed. Read data of throttle position sensor using Subaru Select Monitor. Throttle position sensor input signal is indicated. CHECK Is the value voltage between 0.3 and 0.7 V? YES: Go to step 8E12. NO: Go to step 8E15.
12. 8E12: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. Throttle fully open. NOTE: Must be changed correspondingly with accelerator pedal operation (from "released" to "depressed" position). CHECK: Is the value voltage between 4.3 and 4.9 V? YES: Go to step 8E14. NO: Go to step 8E15.
13. 8E13: CHECK INPUT SIGNAL FOR TCM (THROTTLE POSITION SENSOR POWER SUPPLY). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B55) No. 1 (+) - Chassis ground (-): (Scheme 441): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage between 4.8 and 5.3 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in throttle position sensor circuit. NO: Go to step 8E15.
14. 8E14: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR (THROTTLE POSITION SENSOR POWER SUPPLY). Read data of throttle position sensor power supply using Subaru Select Monitor. Throttle position sensor power supply voltage is indicated. CHECK: Is the value voltage between 4.8 and 5.3 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in throttle position sensor circuit. NO: Go to step 8E15.
15. 8E15: CHECK POOR CONTACT. CHECK: Is there poor contact in throttle position sensor circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

1. The vehicle speed signal is abnormal.
2. The circuit in combination meter is faulty.
3. The harness connector between TCM and vehicle speed sensor is in short or open.

1. Erroneous idling.
2. Engine stalls.
3. Poor driving performance.

Input Signal Circuit Of TCM & Vehicle Speed Sensor 2. Scheme 442

Scheme 443

Scheme 444

Scheme 445

Scheme 446

Scheme 447

Scheme 448

Scheme 449

Scheme 450

Scheme 451

Scheme 452

Scheme 453

Scheme 454

Scheme 455

Scheme 456

Scheme 457

Scheme 458

1. 8F1: CHECK OPERATION OF SPEEDOMETER. CHECK speedometer operate normally? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and transmission. NO: Go to step 8F2.
2. 8F2: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Disconnect connector from transmission. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B55) No. 5 - (B11) No. 17: (Scheme 443): Measuring Resistance Of Harness Between TCM &Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8F3. NO: Repair open circuit in harness between TCM and transmission connector.
3. 8F3: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B55) No. 21 - (B11) No. 18: (Scheme 444): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8F4. NO: Repair open circuit in harness between TCM and transmission connector, and poor contact in coupling connector
4. 8F4: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 21 - Chassis ground: (Scheme 445): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8F5. NO: Repair short circuit in harness between TCM and transmission connector.
5. 8F5: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 5 - Chassis ground: (Scheme 446): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8F6. NO: Repair short circuit in harness between TCM and transmission connector.
6. 8F6: CHECK VEHICLE SPEED SENSOR 2. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance between transmission connector receptacle's terminals. Connector & Terminal (T4) No. 17 - No. 18: (Scheme 447): Measuring Resistance Between Transmission Connector Receptacle's Terminals CHECK: Is the resistance between 450 and 650 ohm? YES: Go to step 8F7. NO: Replace vehicle speed sensor 2. (Scheme 448): Identifying Vehicle Speed Sensor 2 & Torque Converter Turbine Speed Sensor
7. 8F7: PREPARE OSCILLOSCOPE. CHECK: Do you have oscilloscope? YES: Go to step 8F10. NO: Go to step 8F8.
8. 8F8: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8F11. NO: Go to step 8F9.
9. 8F9: CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Start the engine and set vehicle in 20 km/h (12 MPH) condition. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector terminals. Connector & Terminal (B55) No. 5 (+) - No. 21 (-): (Scheme 449): Measuring Voltage Between TCM Connector Terminals CHECK: Is the voltage more than AC 1 V? YES: Go to step 8F12. NO: Go to step 8F19.
10. 8F10: CHECK VEHICLE SPEED SENSOR 2 USING OSCILLOSCOPE. Connect all connectors. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Set oscilloscope to TCM connector terminals. Positive probe; (B55) No. 5. Earth lead; (B55) No. 21. (Scheme 450): Setting Oscilloscope To TCM Connector Terminals Start the engine, and drive the wheels slowly. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunctions. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY»(ref-175571-S20362536332005042200000). Measure signal voltage indicated on oscilloscope. (Scheme 451): Measuring Signal Voltage Indicated On Oscilloscope CHECK: Is the voltage more than AC 4 V? YES: Go to step 8F12. NO: Go to step 8F19.
11. 8F11: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. Connect all connectors. Connect Subaru Select Monitor to data link connector. (Scheme 452): Identifying Location Data Link Connector (DLC) Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Turn ignition switch to ON and turn Subaru Select Monitor switch to ON. Start the engine. Read data of vehicle speed using Subaru Select Monitor. Compare speedometer with Subaru Select Monitor indications. Vehicle speed is indicated in "km/h" or "MPH". Slowly increase vehicle speed to 60 km/h" or 37 MPH. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY»(ref-175571-S20362536332005042200000). CHECK: Does the speedometer indication increase as the Subaru Select Monitor data increases? YES: Go to step 8F12. NO: Go to step 8F19.
12. 8F12: CHECK HARNESS CONNECTOR BETWEEN TCM AND COMBINATION METER. Turn ignition switch to OFF. Disconnect connector from combination meter. Measure resistance of harness between TCM and combination meter connector. Connector & Terminal (B55) No. 13 - (i11) No. 7: (Scheme 453): Measuring Resistance Of Harness Between TCM & Combination Meter Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8F13. NO: Repair open circuit in harness between TCM and combination meter connector, and poor contact in coupling connector.
13. 8F13: CHECK HARNESS CONNECTOR BETWEEN TCM AND COMBINATION METER. Measure resistance of harness between combination meter and chassis ground. Connector & Terminal (i11) No. 7 - Chassis ground: (Scheme 454): Measuring Resistance Of Harness Between Combination Meter & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8F14. NO: Repair short circuit in harness between TCM and combination meter connector.
14. 8F14: PREPARE OSCILLOSCOPE. CHECK: Do you have oscilloscope? YES: Go to step 8F17. NO: Go to step 8F15.
15. 8F15: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8F18. NO: Go to step 8F16.
16. 8F16: CHECK OUTPUT SIGNAL FOR TCM. Connect all connectors. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Set vehicle in 10 km/h (6 MPH) condition. NOTE: The speed difference between front and rear wheels may light ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure on on-board diagnostics system. See «CLEARING MEMORY»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B55) No. 13 - Chassis ground: (Scheme 455): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage less than 1 V <--> more than 4 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM. NO: Go to step 8F19.
17. 8F17: CHECK INPUT SIGNAL FOR TCM USING OSCILLOSCOPE. Connect connectors to combination meter. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Set oscilloscope to TCM connector terminals. Positive probe; (B55) No. 13. Earth lead; (B55) No. 21. (Scheme 456): Setting Oscilloscope To TCM Connector Terminals Start the engine. Shift on the gear position, and keep the vehicle speed at constant. Measure signal voltage indicated on oscilloscope. NOTE: If vehicle speed increases, the width of amplitude (W) decreases. The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). (Scheme 457): Measuring Signal Voltage Indicated On Oscilloscope CHECK: Is the voltage more than AC 2 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM. NO: Go to step 8F19.
18. 8F18: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. Connect all connectors. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Connect Subaru Select Monitor to data link connector. (Scheme 458): Identifying Location Data Link Connector (DLC) Turn ignition switch to ON and Subaru Select Monitor switch to ON. Start the engine, and drive all wheels. Read data of vehicle speed using Subaru Select Monitor. Compare speedometer with Subaru Select Monitor indications. Vehicle speed is indicated in "km/h" or "MPH". Slowly increase vehicle speed to 60 km/h or 37 MPH. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). CHECK: Does the speedometer indication increase as the Subaru Select Monitor data increases? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM. NO: Go to step 8F19.
19. 8F19: CHECK POOR CONTACT. CHECK: Is there poor contact in vehicle speed sensor 2 circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Input signal circuit of TCM is open or shorted.

1. Excessive shift shock.
2. Stucked in 3rd gear when not in low speed (less than 10 km/h or 6 MPH)

Input Signal Circuit Of TCM Turbine Speed Sensor. Scheme 459

Scheme 460

Scheme 461

Scheme 462

Scheme 463

Scheme 464

Scheme 465

Scheme 466

Scheme 467

Scheme 468

1. 8G1: CHECK TORQUE CONVERTER TURBINE SPEED SENSOR. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance between transmission connector receptacle's terminals. Connector & Terminal (T4) No. 14 - No. 15: (Scheme 460): Measuring Resistance Between Transmission Connector Receptacle's Terminals CHECK: Is the resistance between 450 and 650 ohm? YES: Go to step 8G2. NO: Replace torque converter turbine speed sensor see scheme 79: Identifying Vehicle Speed Sensor 2 & Torque Converter Turbine Speed Sensor
2. 8G2: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B55) No. 12 - (B11) No. 14: (Scheme 461): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8G3. NO: Repair open circuit in harness between TCM and transmission connector.
3. 8G3: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B55) No. 21 - (B11) No. 15: (Scheme 462): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8G4. NO: Repair open circuit in harness between TCM and transmission connector.
4. 8G4: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 21 - Chassis ground: (Scheme 463): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8G5. NO: Repair short circuit in harness between TCM and transmission connector.
5. 8G5: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 12 - Chassis ground: (Scheme 464): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8G6. NO: Repair short circuit in harness between TCM and transmission connector.
6. 8G6: PREPARE OSCILLOSCOPE. CHECK: Do you have oscilloscope? YES: Go to step 8G10. NO: Go to step 8G7.
7. 8G7: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8G9. NO: Go to step 8G8.
8. 8G8: CHECK INPUT SIGNAL FOR TCM. Connect connector to transmission. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Start the engine and set vehicle in 20 km/h (12 MPH) condition. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector terminals. Connector & Terminal (B55) No. 12 (+) - No. 21 (-): (Scheme 465): Measuring Voltage Between TCM Connector Terminals CHECK: Is the voltage more than AC 1 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and transmission NO: Go to step 8G11.
9. 8G9: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. Connect connector to transmission. Connect Subaru Select monitor to data link connector. (Scheme 466): Identifying Location Data Link Connector (DLC) Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Turn ignition switch to ON and turn Subaru Select Monitor switch to ON. Start the engine. Read data of vehicle speed using Subaru Select Monitor. Compare speedometer with Subaru Select Monitor indications. Vehicle speed is indicated in "km/h" or "MPH". Slowly increase vehicle speed to 20 km/h or 12 MPH. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). CHECK: Is the revolution value same as the tachometer reading shown on the combination meter? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and transmission. NO: Go to step 8G11.
10. 8G10: CHECK INPUT SIGNAL FOR TCM USING OSCILLOSCOPE. Connect connector to transmission. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD moels, raise all wheels off ground. Set oscilloscope to TCM connector terminals. Position probe; (B55) No. 12. Earth lead; (B55) No. 21. (Scheme 467): Setting Oscilloscope To TCM Connector Terminals Start the engine and set vehicle in 20 km/h (12 MPH) condition. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure signal voltage indicated on oscilloscope. (Scheme 468): Measuring Signal Voltage Indicated On Oscilloscope CHECK: Is the signal voltage more than AC 1 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and transmission. NO: Go to step 8G11.
11. 8G11: CHECK POOR CONTACT. CHECK: Is there poor contact in torque converter turbine speed sensor circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

1. The signal circuit is open or shorted.

Excessive shift shock.

Signal Circuit Between ECM & TCM Torque Control Signal. Scheme 469

Scheme 470

Scheme 471

Scheme 472

Scheme 473

Scheme 474

Scheme 475

Scheme 476

1. 8H1: CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Turn ignition switch to OFF. Measure resistance of harness between TCM and ECM connector. Connector & Terminal (B54) No. 21 - (B135) No. 17: (Scheme 470): Measuring Resistance Of Harness Between TCM & ECM Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8H2. NO: Repair open circuit in harness between TCM and ECM connector.
2. 8H2: CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Measure resistance of harness between TCM and ECM connector. Connector & Terminal (B54) No. 13 - (B135) No. 16: (Scheme 471): Measuring Resistance Of Harness Between TCM & ECM Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8H3. NO: Repair open circuit in harness between TCM and ECM connector.
3. 8H3: CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Measure resistance of harness between TCM connector and chassis ground. Connector & Terminal (B54) No. 21 - Chassis ground: (Scheme 472): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8H4. NO: Repair short circuit in harness between TCM and ECM connector.
4. 8H4: CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Measure resistance of harness between TCM connector and chassis ground. Connector & Terminal (B54) No. 13 - Chassis ground: (Scheme 473): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8H5. NO: Repair short circuit in harness between TCM and ECM connector.
5. 8H5: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Turn ignition switch to ON and start engine. Measure voltage between TCM connector terminals. Connector & Terminal (B54) No. 13 (+) - (B55) No. 19: (B54) No. 21 (+) - (B55) No. 19: (Scheme 474): Measuring Voltage Between TCM Connector Terminals CHECK: Is each voltage more than 4.8 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and ECM. NO: Go to step 8H6.
6. 8H6: CHECK POOR CONTACT. CHECK: Is there poor contact in torque control signal circuit? YES: Repair poor contact. NO: Go to step 8H7.
7. 8H7: CHECK GROUND LINE BETWEEN TRANSMISSION AND BODY. Check installing condition of ground line in transmission and body. CHECK: Is there any dirt or rust at ground line installing point? YES: Remove dirt and rust. NO: Go to step 8H8.
8. 8H8: CHECK GROUND LINE BETWEEN TRANSMISSION AND BODY. Check installing condition of ground line in transmission and body. Tightening torque: 13+/-3 N.m (1.3+/-0.3 kg-m, 9.4+/-2.2 ft-lb) CHECK: Is tightening torque value within specification? YES: Go to step 8H9. NO: Tighten to specified torque.
9. 8H9: CHECK GROUND LINE INSIDE TRANSMISSION. Drain AT fluid and remove oil pan. Check tightening torque value of ground line installing bolt. Tightening torque: 8+/-1 N.m (0.8+/-0.1 kg-m, 5.8+/-0.7 ft-lb) (Scheme 475): Checking Tightening Torque Value Of Ground Line Installing Bolt CHECK: Is tightening torque value within specification? YES: Go to step 8H10. NO: Tighten to specified torque.
10. 8H10: RECHECK OUTPUT SIGNAL EMITTED FROM TCM. Measure voltage between TCM connector terminals. Connector & Terminal (B54) No. 13 (+) - (B55) No. 19 (-): (B54) No. 21 (+) - (B55) No. 19 (-): (Scheme 476): Measuring Voltage Between TCM Connector Terminals CHECK: Is each voltage more than 4.8 V? YES: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000). NO: Replace ECM, see «ENGINE CONTROL MODULE»(ref-175204-S08951395982005042600000).

Input signal circuit of TCM from ECM is open or shorted.

Excessive shift shock.

Input Signal Circuit Of TCM From ECM. Scheme 477

Scheme 478

Scheme 479

Scheme 480

Scheme 481

1. 8I1: CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Turn ignition switch to OFF. Disconnect harness connectors from TCM and ECM. Measure resistance of harness between TCM and ECM connector. Connector & Terminal (B55) No. 20 - (B136) No. 11: (Scheme 478): Measuring Resistance Of Harness Between TCM & ECM Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 812. NO: Repair open circuit in harness between TCM and ECM connector.
2. 812: CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Measure resistance of harness between TCM connector and chassis ground. Connector & Terminal (B55) No. 20 - Chassis ground: (Scheme 479): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 813. NO: Repair short circuit in harness between TCM and ECM connector.
3. 813: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8I5. NO: Go to step 8I4.
4. 8I4: CHECK INPUT SIGNAL FOR TCM. Re-connect harness connectors to TCM and ECM. Start the engine, and warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F) drive the vehicle until the ATF reaches operating temperature. Engine idling. Measure voltage between TCM connector terminals. Connector & Terminal (B55) No. 20 (+) - No. 19 (-): (Scheme 480): Measuring Voltage Between TCM Connector Terminals CHECK: Is the voltage between 1.2 and 1.8V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and ECM. NO: Go to step 816.
5. 8I5: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. Turn ignition switch to OFF. Connect Subaru Select Monitor to data link connector. (Scheme 481): Identifying Location Data Link Connector (DLC) Start the engine, and turn Subaru Select monitor switch to ON. Warm-up the engine until engine coolant temperature is above 80°C (176°F). Engine idling. Read data of intake manifold pressure signal using Subaru Select Monitor. Display shows intake manifold pressure signal sent from ECM. Is the value between 1.2 and 1.8 V? Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector/terminals at TCM and ECM. Go to step 8I6. 8I6: CHECK POOR CONTACT. CHECK: Is there poor contact in intake manifold pressure signal circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Output signal circuit of shift solenoid 1 is open or shorted.

Does not shift.

Output Signal Circuit Of Shift Solenoid 1. Scheme 482

Scheme 483

Scheme 484

Scheme 485

Scheme 486

Scheme 487

Scheme 488

Scheme 489

1. 8J1: CHECK SHIFT SOLENOID 1 GROUND LINE. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 16 - Transmission ground: (Scheme 483): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance less than 1 ohm? YES: Go to step 8J2. NO: Repair open circuit in transmission harness.
2. 8J2: CHECK SHIFT SOLENOID 1. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 1 - Transmission ground: (Scheme 484): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance between 10 and 16 ohm? YES: Go to step 8J3. NO: Go to step 8J6.
3. 8J3: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and shift solenoid 1 connector. Connector & Terminal (B54) No. 7 - (B11) No. 1: (Scheme 485): Measuring Resistance Of Harness Between TCM & Shift Solenoid 1 Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8J4. NO: Repair open circuit in harness between TCM and transmission connector.
4. 8J4: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM connector and chassis ground. Connector & Terminal (B54) No. 7 - Chassis ground: (Scheme 486): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8J5. NO: Repair short circuit in harness between TCM and transmission connector.
5. 8J5: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Connect connector to transmission. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Start the engine and warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Move select lever to "D", and slowly increase vehicle speed to 50 km/h (31 MPH). NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 7 (+) - Chassis ground (-): (Scheme 487): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage 1 V --> 9 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM. NO: Go to step 8J8.
6. 8J6: CHECK SHIFT SOLENOID 1 (IN TRANSMISSION). Remove transmission connector from stay. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Drain automatic transmission fluid. CAUTION: Do not drain the automatic transmission fluid until it cools down. Remove oil pan, and disconnect connector from shift solenoid 1. Measure resistance between shift solenoid 1 connector and transmission ground. Connector & Terminal No. 1 - Transmission ground: (Scheme 488): Measuring Resistance Between Shift Solenoid 1 Connector & Transmission Ground CHECK: Is the resistance between 10 and 16 ohm? YES: Go to step 8J7. NO: Replace shift solenoid 1.
7. 8J7: CHECK HARNESS CONNECTOR BETWEEN SHIFT SOLENOID 1 AND TRANSMISSION. Measure resistance of harness between shift solenoid 1 and transmission connector. Connector & Terminal (AT5) No. 1 - (T4) No. 1: (Scheme 489): Measuring Resistance Of Harness Between Shift Solenoid 1 & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8J8. NO: Repair open circuit in harness between shift solenoid 1 and transmission connector.
8. 8J8: CHECK POOR CONTACT. CHECK: Is there poor contact in shift solenoid 1 circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Output signal circuit of shift solenoid 2 is open or shorted.

Does not shift.

Output Signal Circuit Of Shift Solenoid 2. Scheme 490

Scheme 491

Scheme 492

Scheme 493

Scheme 494

Scheme 495

Scheme 496

Scheme 497

1. 8K1: CHECK SHIFT SOLENOID 2 GROUND LINE. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 16 - Transmission ground: (Scheme 491): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance less than 1 ohm? YES: Go to step 8K2. NO: Repair open circuit in transmission harness.
2. 8K2: CHECK SHIFT SOLENOID 2. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 2 - Transmission ground: (Scheme 492): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance between 10 and 16 ohm? YES: Go to step 8K3. NO: Go to step 8K6.
3. 8K3: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B54) No. 6 - (B11) No. 2: (Scheme 493): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8K4. NO: Repair open circuit in harness between TCM and transmission connector.
4. 8K4: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM connector and chassis ground. Connector & Terminal (B54) No. 6 - Chassis ground: (Scheme 494): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground. CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8K5. NO: Repair short circuit in harness between TCM and transmission connector.
5. 8K5: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Connect connector to transmission. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Start the engine, and warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Move select lever to "D", and slowly increase vehicle speed to 50 km/h (31 MPH). NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 6 (+) - Chassis ground (-): (Scheme 495): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage 9 V --> 1 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or contact in the TCM. NO: Go to step 8K8.
6. 8K6: CHECK SHIFT SOLENOID 2 (IN TRANSMISSION). Remove transmission connector from stay. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Drain automatic transmission fluid. CAUTION: Do not drain the automatic transmission fluid until it cools down. Remove oil pan, and disconnect connector from shift solenoid 2. Measure resistance between shift solenoid 2 connector and transmission ground. Connector & Terminal No. 1 - Transmission ground: (Scheme 496): Measuring Resistance Between Shift Solenoid 2 Connector & Transmission Ground CHECK: Is the resistance between 10 and 16 ohm? YES: Go to step 8K7. NO: Replace shift solenoid assembly.
7. 8K7: CHECK HARNESS CONNECTOR BETWEEN SHIFT SOLENOID 2 AND TRANSMISSION. Measure resistance of harness between shift solenoid 2 and transmission connector. Connector & Terminal (AT6) No. 1 - (T4) No. 2: (Scheme 497): Measuring Resistance Of Harness Between Shift Solenoid 2 & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8K8. NO: Repair open circuit in harness between shift solenoid 2 and transmission connector.
8. 8K8: CHECK POOR CONTACT. CHECK: Is there poor contact in shift solenoid 2 circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Output signal circuit of low clutch timing solenoid is open or shorted.

Excessive shift shock.

Output Signal Circuit Of Low Clutch Timing Solenoid. Scheme 498

Scheme 499

Scheme 500

Scheme 501

Scheme 502

Scheme 503

Scheme 504

Scheme 505

Scheme 506

1. 8L1: CHECK LOW CLUTCH TIMING SOLENOID GROUND LINE. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 16 - Transmission ground: (Scheme 499): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance less than 1 ohm? YES: Go to Step 8L2. NO: Repair open circuit in transmission harness.
2. 8L2: CHECK LOW CLUTCH TIMING SOLENOID. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 3 - Transmission ground: (Scheme 500): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance between 10 and 16 ohm? YES: Go to step 8L3. NO: Go to step 8L7.
3. 8L3: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B54) No. 14 - (B11) No. 3: (Scheme 501): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8L4. NO: Repair open circuit in harness between TCM and transmission connector.
4. 8L4: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM connector and chassis ground. Connector & Terminal (B54) No. 14 - Chassis ground: (Scheme 502): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8L5. NO: Repair short circuit in harness between TCM and transmission connector.
5. 8L5: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Connect connector to transmission. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Start the engine and warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Move select lever to "2", and slowly increase vehicle speed to 35 km/h (22 MPH). NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 14 (+) - Chassis ground (-): (Scheme 503): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage less than 1 V? YES: Go to step 8L6. NO: Go to step 8L9.
6. 8L6: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Move select lever to "D", and slowly increase vehicle speed to 65 km/h (40 MPH). NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 14 (+) - Chassis ground (-): (Scheme 504): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage more than 9 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or contact in the TCM. NO: Go to step 8L9.
7. 8L7: CHECK LOW CLUTCH TIMING SOLENOID (IN TRANSMISSION). Remove transmission connector from stay. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Drain automatic transmission fluid. CAUTION: Do not drain the automatic transmission fluid until it cools down. Remove oil pan, and disconnect connector from low clutch timing solenoid. Measure resistance between low clutch timing solenoid connector and transmission ground. Connector & Terminal No. 1 - Transmission ground: (Scheme 505): Measuring Resistance Between Low Clutch Timing Solenoid Connector & Transmission Ground CHECK: Is the resistance between 10 and 16 ohm? YES: Go to step 8L8. NO: Replace low clutch timing solenoid.
8. 8L8: CHECK HARNESS CONNECTOR BETWEEN LOW CLUTCH TIMING SOLENOID AND TRANSMISSION. Measure resistance of harness between low clutch timing solenoid and transmission connector. Connector & Terminal (AT9) No. 1 - (T4) No. 3: (Scheme 506): Measuring Resistance Of Harness Between Low Clutch Timing Solenoid & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8L9. NO: Repair open circuit in harness between low clutch timing solenoid and transmission connector.
9. 8L9: CHECK POOR CONTACT. CHECK: Is there poor contact in low clutch timing solenoid circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Output signal circuit of 2-4 brake timing solenoid is open or shorted.

Excessive shift shock.

Output Signal Circuit Of 2-4 Brake Timing Solenoid. Scheme 507

Scheme 508

Scheme 509

Scheme 510

Scheme 511

Scheme 512

Scheme 513

Scheme 514

Scheme 515

1. 8M1: CHECK 2-4 BRAKE TIMING SOLENOID GROUND LINE. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 16 - Transmission ground: (Scheme 508): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance less than 1ohm? YES: Go to step 8M2. NO: Repair open circuit in transmission harness.
2. 8M2: CHECK 2-4 BRAKE TIMING SOLENOID. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 4 - Transmission ground: (Scheme 509): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance between 10 and 16 ohm? YES: Go to step 8M3. NO: Go to step 8M7.
3. 8M3: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B54) No. 5 - (B11) No. 4: (Scheme 510): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8M4. NO: Repair open circuit in harness between TCM and transmission connector.
4. 8M4: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM connector and chassis ground. Connector & Terminal (B54) No. 5 - Chassis ground: (Scheme 511): Measuring Resistance Of Harness Between TCM Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8M5. NO: Repair short circuit in harness between TCM and transmission connector.
5. 8M5: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Connect connector to transmission. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Start the engine and warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Move select lever to "1", and slowly increase vehicle speed to 10 km/h (6 MPH). NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 5 (+) - Chassis ground (-): (Scheme 512): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage less than 1 V? YES: Go to step 8M6. NO: Go to step 8M9.
6. 8M6: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Move select lever to "3", and slowly increase vehicle speed to 10 km/h (6 MPH). NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 5 (+) - Chassis ground (-): (Scheme 513): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage more than 9 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or contact in the TCM. NO: Go to step 8M9.
7. 8M7: CHECK 2-4 BRAKE TIMING SOLENOID (IN TRANSMISSION). Remove transmission connector from stay. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Drain automatic transmission fluid. CAUTION: Do not drain the automatic transmission fluid until it cools down. Remove oil pan, and disconnect connector from 2-4 brake timing solenoid. Measure resistance between 2-4 brake timing solenoid connector and transmission ground. Connector & Terminal No. 1 - Transmission ground: (Scheme 514): Measuring Resistance Between 2-4 Brake Timing Solenoid Connector & Transmission Ground. CHECK: Is the resistance between 10 and 16 ohm? YES: Go to step 8M8. NO: Replace 2-4 brake timing solenoid.
8. 8M8: CHECK HARNESS CONNECTOR BETWEEN 2-4 BRAKE TIMING SOLENOID AND TRANSMISSION. Measure resistance of harness between 2-4 brake timing solenoid and transmission connector. Connector & Terminal (AT8) No. 1 - (T4) No. 4: (Scheme 515): Measuring Resistance Of Harness Between 2-4 Brake Timing Solenoid & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8M9. NO: Repair open circuit in harness between 2-4 brake timing solenoid and transmission connector.
9. 8M9: CHECK POOR CONTACT. CHECK: Is there poor contact in 2-4 brake timing solenoid circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Output signal circuit of line pressure duty solenoid or resistor is open or shorted.

Excessive shift shock.

Output Signal Circuit Of Line Pressure Duty Solenoid Or Resistor. Scheme 516

Scheme 517

Scheme 518

Scheme 519

Scheme 520

Scheme 521

Scheme 522

Scheme 523

Scheme 524

Scheme 525

Scheme 526

Scheme 527

Scheme 528

Scheme 529

Scheme 530

Scheme 531

Scheme 532

1. 8N1: CHECK RESISTOR. Turn ignition switch to OFF. Disconnect connector from dropping resistor. Measure resistance between dropping resistor terminal. Terminals No. 1 - No. 2: (Scheme 517): Measuring Resistance Between Dropping Resistor Terminal CHECK: Is the resistance between 9 and 15 ohm? YES: Go to step 8N2. NO: Replace dropping resistor.
2. 8N2: CHECK HARNESS CONNECTOR BETWEEN TCM AND DROPPING RESISTOR. Measure resistance of harness between TCM connector and dropping resistor connector. Connector & Terminal (B54) No. 18 - (B4) No. 1: (Scheme 518): Measuring Resistance Of Harness Between Tcm Connector & Dropping Resistor Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8N3. NO: Repair open circuit in harness between TCM and dropping resistor connector.
3. 8N3: CHECK HARNESS CONNECTOR BETWEEN TCM AND DROPPING RESISTOR. Measure resistance of harness between dropping resistor connector and chassis ground. Connector & Terminal (B4) No. 1 - Chassis ground: (Scheme 519): Measuring Resistance Of Harness Between Dropping Resistor Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8N4. NO: Repair short circuit in harness between TCM and dropping resistor connector.
4. 8N4: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND DROPPING RESISTOR. Disconnect connector from transmission. Measure resistance of harness between transmission and dropping resistor connector. Connector & Terminal (B4) No. 2 - (B11) No. 5: (Scheme 520): Measuring Resistance Of Harness Between Transmission & Dropping Resistor Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8N5. NO: Repair open circuit in harness between dropping resistor and transmission connector.
5. 8N5: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND DROPPING RESISTOR. Measure resistance of harness between dropping resistor connector and chassis ground. Connector & Terminal (B4) No. 2 - Chassis ground: (Scheme 521): Measuring Resistance Of Harness Between Dropping Resistor Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8N6. NO: Repair short circuit in harness between dropping resistor and transmission connector.
6. 8N6: CHECK LINE PRESSURE DUTY SOLENOID GROUND LINE. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 16 - Transmission ground: (Scheme 522): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance less than 1 ohm? YES: Go to step 8N7. NO: Repair open circuit in transmission harness.
7. 8N7: CHECK LINE PRESSURE DUTY SOLENOID. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 5 - Transmission ground: (Scheme 523): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance between 2.0 and 4.5 ohm? YES: Go to step 8N8. NO: Go to step 8N17.
8. 8N8: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B54) No. 9 - (B11) No. 5: (Scheme 524): Measuring Resistance Of Harness Between Tcm & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8N9. NO: Repair open circuit in harness between TCM and transmission connector.
9. 8N9: CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B54) No. 9 - Chassis ground: (Scheme 525): Measuring Resistance Of Harness Between Tcm & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8N10. NO: Repair short circuit in harness between TCM and transmission connector.
10. 8N10: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8N15. NO: Go to step 8N11.
11. 8N11: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Connect all connectors. Start the engine and warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Turn ignition switch to ON (engine OFF). Move select lever to "N". Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 9 (+) - Chassis ground (-): (Scheme 526): Measuring Voltage Between Tcm Connector & Chassis Ground CHECK: Is the voltage between 1.5 and 4.0 V with throttle fully closed? YES: Go to step 8N12. NO: Go to step 8N19.
12. 8N12: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 9 (+) - Chassis ground (-): (Scheme 527): Measuring Voltage Between Tcm Connector & Chassis Ground CHECK: Is the voltage less than 1 V with throttle fully open? YES: Go to step 8N13. NO: Go to step 8N19.
13. 8N13: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 18 (+) - Chassis ground (-): (Scheme 528): Measuring Voltage Between Tcm Connector & Chassis Ground CHECK: Is the voltage more than 8.5 V with throttle fully closed? YES: Go to step 8N14. NO: Go to step 8N19.
14. 8N14: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 18 (+) - Chassis ground (-): (Scheme 529): Measuring Voltage Between Tcm Connector & Chassis Ground CHECK: Is the voltage less than 1 V with throttle fully open? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in TCM. NO: Go to step 8N19.
15. 8N15: CHECK OUTPUT SIGNAL EMITTED FROM TCM USING SUBARU SELECT MONITOR. Connect connector to transmission. Connect Subaru Select Monitor to data link connector. (Scheme 530): Identifying Location Data Link Connector (DLC) Start the engine, and turn Subaru Select Monitor switch to ON. Warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Stop the engine and turn ignition switch to ON (engine OFF). Move select lever to "N". Read data of line pressure duty solenoid using Subaru Select Monitor. Line pressure duty solenoid is indicated in "%". Throttle is fully closed. CHECK: Is the value 100%? YES: Go to step 8N16. NO: Go to step 8N19.
16. 8N16: CHECK OUTPUT SIGNAL EMITTED FROM TCM USING SUBARU SELECT MONITOR. Turn ignition switch to ON (Engine OFF). Throttle is fully open. CHECK: Is the value between 10 and 20%? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in TCM. NO: Go to step 8N19.
17. 8N17: CHECK LINE PRESSURE DUTY SOLENOID (IN TRANSMISSION). Remove transmission connector from stay. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Drain automatic transmission fluid. CAUTION: Do not drain the automatic transmission fluid until it cools down. Remove oil pan, and disconnect connector from line pressure duty solenoid. Measure resistance between line pressure duty solenoid connector and transmission ground. Connector & Terminal No. 1 - Transmission ground: (Scheme 531): Measuring Resistance Between Line Pressure Duty Solenoid Connector & Transmission Ground CHECK: Is the resistance between 2.0 and 4.5 ohm? YES: Go to step 8N18. NO: Replace line pressure duty solenoid.
18. 8N18: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND LINE PRESSURE DUTY SOLENOID. Measure resistance of harness between line pressure duty solenoid and transmission connector. Connector & Terminal (T4) No. 5 - (AT2) No. 1: (Scheme 532): Measuring Resistance Of Harness Between Line Pressure Duty Solenoid & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8N19. NO: Repair open circuit in harness between line pressure duty solenoid and transmission connector.
19. 8N19: CHECK POOR CONTACT. CHECK: Is there poor contact in line pressure duty solenoid circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Output signal circuit of 2-4 brake duty solenoid is open or shorted.

Excessive shift shock.

Output Signal Circuit Of 2-4 Brake Duty Solenoid. Scheme 533

Scheme 534

Scheme 535

Scheme 536

Scheme 537

Scheme 538

Scheme 539

Scheme 540

Scheme 541

Scheme 542

Scheme 543

Scheme 544

Scheme 545

Scheme 546

Scheme 547

Scheme 548

Scheme 549

1. 8O1: CHECK RESISTOR. Turn ignition switch to OFF. Disconnect connector from dropping resistor. Measure resistance between dropping resistor terminal. Terminals No. 3 - No. 4: (Scheme 534): Measuring Resistance Between Dropping Resistor Terminal CHECK: Is the resistance between 9 and 15 ohm? YES: Go to step 8O2. NO: Replace dropping resistor.
2. 8O2: CHECK HARNESS CONNECTOR BETWEEN TCM AND DROPPING RESISTOR. Measure resistance of harness between TCM connector and dropping resistor connector. Connector & Terminal (B54) No. 17 - (B4) No. 3: (Scheme 535): Measuring Resistance Of Harness Between Tcm Connector & Dropping Resistor Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8O3. NO: Repair open circuit in harness between TCM and dropping resistor connector.
3. 8O3: CHECK HARNESS CONNECTOR BETWEEN TCM AND DROPPING RESISTOR. Measure resistance of harness between dropping resistor connector and chassis ground. Connector & Terminal (B4) No. 3 - Chassis ground: (Scheme 536): Measuring Resistance Of Harness Between Dropping Resistor Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8O4. NO: Repair short circuit in harness between TCM and dropping resistor connector.
4. 8O4: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND DROPPING RESISTOR. Disconnect connector from transmission. Measure resistance of harness between transmission and dropping resistor connector. Connector & Terminal (B4) No. 4 - (B11) No. 9: (Scheme 537): Measuring Resistance Of Harness Between Transmission & Dropping Resistor Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8O5. NO: Repair open circuit in harness between dropping resistor and transmission connector.
5. 8O5: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND DROPPING RESISTOR. Measure resistance of harness between dropping resistor connector and chassis ground. Connector & Terminal (B4) No. 4 - Chassis ground: (Scheme 538): Measuring Resistance Of Harness Between Dropping Resistor Connector & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8O6. NO: Repair short circuit in harness between dropping resistor and transmission connector.
6. 8O6: CHECK 2-4 BRAKE DUTY SOLENOID GROUND LINE. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 16 - Transmission ground: (Scheme 539): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance less than 1 ohm? YES: Go to step 8O7. NO: Repair open circuit in transmission harness.
7. 8O7: CHECK 2-4 BRAKE DUTY SOLENOID. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 9 - Transmission ground: (Scheme 540): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance between 2.0 and 4.5 ohm? YES: Go to step 8O8. NO: Go to step 8O17.
8. 8O8: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B54) No. 8 - (B11) No. 9: (Scheme 541): Measuring Resistance Of Harness Between Tcm & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8O9. NO: Repair open circuit in harness between TCM and transmission connector.
9. 8O9: CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B54) No. 8 - Chassis ground: (Scheme 542): Measuring Resistance Of Harness Between Tcm & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8O10. NO: Repair short circuit in harness between TCM and transmission connector.
10. 8O10: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8O15. NO: Go to step 8O11.
11. 8011: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Connect all connectors. Start the engine and warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Turn ignition switch to ON (engine OFF). Move select lever to "N". Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 8 (+) - Chassis ground (-): (Scheme 543): Measuring Voltage Between Tcm Connector & Chassis Ground CHECK: Is the voltage between 1.5 and 4.0 V with throttle fully closed? YES: Go to step 8O12. NO: Go to step 8O19.
12. 8012: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 8 (+) - Chassis ground (-): (Scheme 544): Measuring Voltage Between Tcm Connector & Chassis Ground CHECK: Is the voltage less than 1 V with throttle fully open? YES: Go to step 8O13. NO: Go to step 8O19.
13. 8O13: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 17 (+) - Chassis ground (-): (Scheme 545): Measuring Voltage Between Tcm Connector & Chassis Ground CHECK: Is the voltage more than 8.5 V with throttle fully closed? YES: Go to step 8O14. NO: Go to step 8O19.
14. 8O14: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Measure voltage between TCM connector terminal and chassis ground. Connector & Terminal (B54) No. 17 (+) - Chassis ground (-): (Scheme 546): Measuring Voltage Between Tcm Connector Terminal & Chassis Ground CHECK: Is the voltage less than 1 V with throttle fully open? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition of this time. A temporary poor contact of the connector or harness may be the cause, Repair harness or connector in TCM. NO: Go to step 8O19.
15. 8O15: CHECK OUTPUT SIGNAL EMITTED FROM TCM USING SUBARU SELECT MONITOR. Connect all connectors. Connect Subaru Select Monitor to data link connector. (Scheme 547): Identifying Location Data Link Connector (DLC) Start the engine, and turn Subaru Select Monitor switch to ON. Warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Stop the engine and turn ignition switch to ON (engine OFF). Move select lever to "N". Read data of 2-4 brake duty solenoid using Subaru Select Monitor. 2-4 brake duty is indicated in "%". Throttle is fully closed. CHECK: Is the value 100%? YES: Go to step 8O16. NO: Go to step 8019.
16. 8O16: CHECK OUTPUT SIGNAL EMITTED FROM TCM USING SUBARU SELECT MONITOR. Turn ignition switch to ON (Engine OFF). Throttle is fully open. CHECK: Is the value between 10 and 20%? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition of this time. A temporary poor contact of the connector or harness may be the cause, Repair harness or connector in TCM. NO: Go to step 8O19.
17. 8O17: CHECK 2-4 BRAKE DUTY SOLENOID (IN TRANSMISSION). Remove transmission connector from stay. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Drain automatic transmission fluid. CAUTION: Do not drain the automatic transmission fluid until it cools down. Remove oil pan, and disconnect connector from 2-4 brake duty solenoid. Measure resistance between 2-4 brake duty solenoid connector and transmission ground. Connector & Terminal No. 1 - Transmission ground: (Scheme 548): Measuring Resistance Between 2-4 Brake Duty Solenoid Connector & Transmission Ground CHECK: Is the resistance between 2.0 and 4.5 ohm? YES: Go to step 8O18. NO: Replace 2-4 brake duty solenoid.
18. 8O18: CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND 2-4 BRAKE DUTY SOLENOID. Mesure resistance of harness between 2-4 brake duty solenoid and transmission connector. Connector & Terminal (T4) No. 9 - (AT7) No. 1: (Scheme 549): Mesuring Resistance Of Harness Between 2-4 Brake Duty Solenoid & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8O19. NO: Repair open circuit in harness between 2-4 brake duty solenoid and transmission connector.
19. 8O19: CHECK POOR CONTACT. CHECK: Is there poor contact in 2-4 brake duty solenoid circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Output signal circuit of lock-up duty solenoid is open or shorted.

No "lock-up" (after engine warm-up).

Output Signal Circuit Of Lock-Up Duty Solenoid. Scheme 550

Scheme 551

Scheme 552

Scheme 553

Scheme 554

Scheme 555

Scheme 556

Scheme 557

Scheme 558

Scheme 559

1. 8P1: CHECK TROUBLE CODE. CHECK: Do multiple trouble codes appear in the on-board diagnostics test mode? YES: Go to another trouble code. NO: Go to step 8P2.
2. 8P2: CHECK LOCK-UP DUTY SOLENOID GROUND LINE. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 16 - Transmission ground: (Scheme 551): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance less than 1 ohm? YES: Go to step 8P3. NO: Repair open circuit in transmission harness.
3. 8P3: CHECK LOCK-UP DUTY SOLENOID. Measure resistance between transmission connector receptacle's terminals. Connector & Terminal (T4) No. 13 - No. 16 (Scheme 552): Measuring Resistance Between Transmission Connector Receptacle's Terminals CHECK: Is the resistance between 10 and 17 ohm? YES: Go to step 8P4. NO: Go to step 8P11.
4. 8P4: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness connector between TCM and transmission. Connector & Terminal (B54) No. 16 - (B11) No. 13: (Scheme 553): Measuring Resistance Of Harness Connector Between Tcm & Transmission CHECK: Is the resistance less than 1 ohm? YES: Go to step 8P5. NO: Repair open circuit in harness between TCM and transmission connector.
5. 8P4: CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure resistance of harness connector between TCM and chassis ground. Connector & Terminal (B54) No. 16 - Chassis ground: (Scheme 554): Measuring Resistance Of Harness Connector Between Tcm & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8P6. NO: Repair short circuit in harness between TCM and transmission connector.
6. 8P6: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8P9. NO: Go to step 8P7.
7. 8P7: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Connect connector to transmission. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Start the engine and warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Move select lever to "D" and slowly increase vehicle speed to 75 km/h (47 MPH). Wheels will lock-up. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 16 (+) - Chassis ground (-): (Scheme 555): Measuring Voltage Between Tcm Connector & Chassis Ground CHECK: Is the voltage more than 8.5 V? YES: Go to step 8P8. NO: Go to step 8P13.
8. 8P8: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Return the engine to idling speed and move select lever to "N". Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 16 (+) - Chassis ground (-): (Scheme 556): Measuring Voltage Between Tcm Connector & Chassis Ground CHECK: Is the voltage less than 0.5 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in TCM. NO: Go to step 8P13.
9. 8P9: CHECK OUTPUT SIGNAL EMITTED FROM TCM USING SUBARU SELECT MONITOR. Connect connector to transmission. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Connect Subaru Select Monitor to data link connector. (Scheme 557): Identifying Location Data Link Connector (DLC) Start the engine, and turn Subaru Select Monitor switch to ON. Start the engine and warm-up the transmission until ATF temperature is above 80°C (176°F). NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature. Read data of lock-up duty solenoid using Subaru Select Monitor. Lock-up duty is indicated in "%" (percent). Move select lever to "D" and slowly increase vehicle speed to 75 km/h (47 MPH). Wheels will lock-up. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). CHECK: Is the value 95%? YES: Go to step 8P10. NO: Go to step 8P13.
10. 8P10: CHECK OUTPUT SIGNAL EMITTED FROM TCM USING SUBARU SELECT MONITOR. Return the engine to idling speed and move select lever to "N". NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). CHECK: Is the value 5%? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in TCM. NO: Go to step 8P13.
11. 8P11: CHECK LOCK-UP DUTY SOLENOID (IN TRANSMISSION). Remove transmission connector from stay. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Drain automatic transmission fluid. CAUTION: Do not drain the automatic transmission fluid until it cools down. Remove oil pan, and disconnect connector from lock-up duty solenoid. Measure resistance between lock-up duty solenoid connector and transmission ground. Connector & Terminal No. 1 - Transmission ground: (Scheme 558): Measuring Resistance Between Lock-Up Duty Solenoid Connector & Transmission Ground CHECK: Is the resistance between 10 and 17 ohm? YES: Go to step 8P12. NO: Replace lock-up duty solenoid.
12. 8P12: CHECK HARNESS CONNECTOR BETWEEN LOCK-UP DUTY SOLENOID AND TRANSMISSION. Measure resistance of harness between lock-up duty solenoid and transmission connector. Connector & Terminal (T4) No. 13 - (AT3) No. 1: (Scheme 559): Measuring Resistance Of Harness Between Lock-Up Duty Solenoid & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8P13. NO: Repair open circuit in harness between lock-up duty solenoid and transmission connector.
13. 8P13: CHECK POOR CONTACT. CHECK: Is there poor contact in lock-up duty solenoid circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Output signal circuit of transfer duty solenoid is open or shorted.

Excessive "braking" in tight corners.

Output Signal Circuit Of Transfer Duty Solenoid. Scheme 560

Scheme 561

Scheme 562

Scheme 563

Scheme 564

Scheme 565

Scheme 566

Scheme 567

Scheme 568

Scheme 569

1. 8Q1: CHECK TRANSFER DUTY SOLENOID GROUND LINE. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 16 - Transmission ground: (Scheme 561): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance less than 1 ohm? YES: Go to step 8Q2. NO: Repair open circuit in transmission harness.
2. 8Q2: CHECK TRANSFER DUTY SOLENOID. Measure resistance between transmission connector and transmission ground. Connector & Terminal (T4) No. 16 - Transmission ground: (Scheme 562): Measuring Resistance Between Transmission Connector & Transmission Ground CHECK: Is the resistance between 10 and 17 ohm? YES: Go to step 8Q3. NO: Go to step 8Q10
3. 8Q3: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B54) No. 15 - (B11) No. 6: (Scheme 563): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8Q4. NO: Repair open circuit in harness between TCM and transmission connector.
4. 8Q4: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance harness connector between TCM and chassis ground. Connector & Terminal (B54) No. 15 - Chassis ground. (Scheme 564): Measuring Resistance Harness Connector Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8Q5. NO: Repair short circuit in harness between TCM and transmission connector.
5. 8Q5: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8Q8. NO: Go to step 8Q6.
6. 8Q6: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Connect connectors to transmission. Turn ignition switch to ON (engine OFF). Throttle is fully closed. Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 15 (+) - Chassis ground (-): (Scheme 565): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage less than 1 V in "P" range? YES: Go to step 8Q7. NO: Go to step 8Q12.
7. 8Q7: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Measure voltage between TCM connector and chassis ground. Connector & Terminal (B54) No. 15 (+) - Chassis ground (-): (Scheme 566): Measuring Voltage Between TCM Connector & Chassis Ground CHECK: Is the voltage between 5 and 7 V in "D" range? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the transfer duty solenoid and TCM connector. NO: Go to step 8Q12.
8. 8Q8: CHECK OUTPUT SIGNAL EMITTED FROM TCM USING SUBARU SELECT MONITOR. Connect connector to transmission. Connect Subaru Select Monitor to data link connector. (Scheme 567): Identifying Location Data Link Connector (DLC) Turn ignition switch to ON (engine OFF) and turn Subaru Select Monitor switch to ON. Move select lever to "D" with throttle fully open (vehicle speed 0 km/h or 0 MPH). Read data of transfer duty solenoid using Subaru Select Monitor. Transfer duty solenoid is indicated in "%". CHECK: Is the value between 5 and 10%? YES: Go to step 8Q9. NO: Go to step 8Q12.
9. 8Q9: CHECK OUTPUT SIGNAL EMITTED FROM TCM USING SUBARU SELECT MONITOR. Set FWD mode. Throttle fully closed. CHECK: Is the value 95%? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the transfer duty solenoid and TCM connector. NO: Go to step 8Q12.
10. 8Q10: CHECK TRANSFER DUTY SOLENOID (IN TRANSMISSION). Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Drain automatic transmission fluid. CAUTION: Do not drain the automatic transmission fluid until it cools down. Remove extension case, and disconnect connector from transfer duty solenoid. Measure resistance between transfer duty solenoid connector and transmission ground. Connector & Terminal (AT4) No. 1 - Transmission ground: (Scheme 568): Measuring Resistance Between Transfer Duty Solenoid Connector & Transmission Ground CHECK: Is the resistance between 10 and 17 ohm? YES: Go to step 8Q11. NO: Replace transfer duty solenoid. See «TRANSFER DUTY SOLENOID AND TRANSFER VALVE»(ref-175202-S39657423872005041800000).
11. 8Q11: CHECK HARNESS CONNECTOR BETWEEN TRANSFER DUTY SOLENOID AND TRANSMISSION. Measure resistance of harness between transfer duty solenoid and transmission connector. Connector & Terminal (T4) No. 6 - (AT4) No. 1: (Scheme 569): Measuring Resistance Of Harness Between Transfer Duty Solenoid & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8Q12. NO: Repair open circuit in harness between transfer duty solenoid and transmission connector.
12. 8Q12: CHECK POOR CONTACT. CHECK: Is there poor contact in transfer duty solenoid circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Input signal circuit of TCM is open or shorted.

Trouble Sysmptom

No lock-up or excessive tight corner "braking".

No lock-up or excessive tight corner "braking".

Input Signal Circuit Of TCM. Scheme 570

Scheme 571

Scheme 572

Scheme 573

Scheme 574

Scheme 575

Scheme 576

Scheme 577

Scheme 578

Scheme 579

1. 8R1: CHECK VEHICLE SPEED SENSOR 1. Turn ignition switch to OFF. Disconnect connector from transmission. Measure resistance between transmission connector receptacle's terminals. Connector & Terminal (T4) No. 19 - No. 20: (Scheme 571): Measuring Resistance Between Transmission Connector Receptacle's Terminals CHECK: Is the resistance between 450 and 650? YES: Go to step 8R2. NO: Replace transmission harness connector.
2. 8R2: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B55) No. 3 - (B11) No. 19: (Scheme 572): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8R3. NO: Repair open circuit in harness between TCM and transmission connector.
3. 8R3: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and transmission connector. Connector & Terminal (B55) No. 21 - (B11) No. 20: (Scheme 573): Measuring Resistance Of Harness Between TCM & Transmission Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 8R4. NO: Repair open circuit in harness between TCM and transmission, connector, and poor contact in coupling connector.
4. 8R4: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 3 - Chassis ground: (Scheme 574): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8R5. NO: Repair short circuit in harness between TCM and transmission connector.
5. 8R5: CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 21 - Chassis ground: (Scheme 575): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 8R6. NO: Repair short circuit in harness between TCM and transmission connector.
6. 8R6: PREPARE OSCILLOSCOPE. CHECK: Do you have oscilloscope? YES: Go to step 8R10. NO: Go to step 8R7.
7. 8R7: PREPARE SUBARU SELECT MONITOR. CHECK: Do you have a Subaru Select Monitor? YES: Go to step 8R9. NO: Go to step 8R8.
8. 8R8: CHECK INPUT SIGNAL FOR TCM. Connect connector to transmission. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Start the engine and set vehicle in 20 km/h (12 MPH) condition. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure voltage between TCM connector terminals. Connector & Terminal (B55) No. 3 (+) - No. 21 (-): (Scheme 576): Measuring Voltage Between TCM Connector Terminals CHECK: Is the voltage more than AC 1 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and transmission. NO: Go to step 8R11.
9. 8R9: CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. Connect connector to transmission. Connect Subaru Select Monitor to data link connector. (Scheme 577): Identifying Location Data Link Connector (DLC) Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Turn ignition switch to ON and turn Subaru Select Monitor switch to ON. Start the engine. Read data of vehicle speed using Subaru Select Monitor. Compare speedometer with Subaru Select Monitor indications. Vehicle speed is indicated in "km/h" or "MPH". Slowly increase vehicle speed to 60 km/h or 37 MPH. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). CHECK: Does the speedometer indication increase as the Subaru Select Monitor data increases? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and transmission. NO: Go to step 8R11.
10. 8R10: CHECK INPUT SIGNAL FOR TCM USING OSCILLOSCOPE. Connect connector to transmission. Lift-up or raise the vehicle and support with safety stand. CAUTION: On AWD models, raise all wheels off ground. Set oscilloscope to TCM connector terminals. Position probe; (B55) No. 3 Earth lead; (B55) No. 21 (Scheme 578): Setting Oscilloscope To TCM Connector Terminals Start the engine and set vehicle in 20 km/h (12 MPH) condition. NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See «CLEARING MEMORY-ABS»(ref-175571-S20362536332005042200000). Measure signal voltage indicated on oscilloscope. (Scheme 579): Measuring Signal Voltage Indicated On Oscilloscope CHECK: Is the voltage more than AC 1 V? YES: Even if "AT OIL TEMP" lights up, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair harness or connector in the TCM and transmission. NO: Go to step 8R11.
11. 8R11: CHECK POOR CONTACT. CHECK: Is there poor contact in vehicle speed sensor 1 circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

BASIC DIAGNOSTIC CHART

If no trouble codes appear in the on-board diagnostics operation (although problems have occurred or are occurring), measure performance characteristics of sensors, actuators, etc., in the Subaru Select Monitor and compare with the "basic data" to determine the cause of problems.

1. Trouble occurs.
2. No trouble codes appear in on-board diagnostics operation.
3. Measure each item using Subaru Select Monitor.
4. Compare measured values with basic data.
5. Determine item which is outside basic data specifications.
6. Check sensor and actuator affected.

Scheme 580

1. 9B1: CHECK BATTERY VOLTAGE. Turn ignition switch to OFF. Connect Subaru Select Monitor to data link connector. (Scheme 580): Identifying Location Data Link Connector (DLC) Start the engine, and engine idling after warmup. Turn Subaru Select Monitor switch to ON. Read data of battery voltage using Subaru Select Monitor. Battery voltage applied to TCM. CHECK: Is voltage between 10 and 16 V? YES: Go to step vehicle speed sensor 1, see «CHECK VEHICLE SPEED SENSOR 1»(ref-175204-S24776056542005041800000). NO: Check battery voltage and specification of electrolyte, regulating voltage under no loads and generator (as a single unit).

1. LED does not come on even if FWD switch is ON.
2. FWD switch circuit is open or short.

Front Wheel Drive Switch Circuit. Scheme 581

Scheme 582

Scheme 583

Scheme 584

Scheme 585

Scheme 586

Scheme 587

Scheme 588

Scheme 589

1. 9P1: CHECK FWD SWITCH. CHECK: When fuse is inserted to FWD switch, does LED light up? YES: Go to step brake switch, see «CHECK BRAKE SWITCH»(ref-175204-S31916138612005041800000). NO: Go to step 9P2.
2. 9P2: CHECK HARNESS CONNECTOR BETWEEN TCM AND FWD SWITCH. Turn ignition switch to OFF. Disconnect connector from FWD switch. Measure resistance of harness between TCM and FWD switch connector. Connector & Terminal (B55) No. 14 - (F67) No. 30: (Scheme 582): Measuring Resistance Of Harness Between TCM & FWD Switch Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 9P3. NO: Repair open circuit in harness between TCM and FWD switch connector.
3. 9P3: CHECK HARNESS CONNECTOR BETWEEN TCM AND FWD SWITCH. Measure resistance of harness connector between TCM and body to make sure that circuit does not short. Connector & Terminal (B55) No. 14 - Chassis ground: (Scheme 583): Measuring Resistance Of Harness Connector Between TCM & Body CHECK: Is the resistance more than 1 Mohm? YES: Go to step 9P4. NO: Repair short circuit in harness connector between TCM and chassis ground.
4. 9P4: CHECK INPUT SIGNAL FOR TCM. Turn ignition switch to OFF. Connect connector to FWD switch. Turn ignition switch to ON. Measure signal voltage for TCM while installing the fuse to FWD switch connector. Connector & Terminal (B55) No. 14 (+) - Chassis ground (-): (Scheme 584): Measuring Signal Voltage For TCM While Installing The Fuse To FWD Switch Connector CHECK: Is the voltage less than 1 V in FWD switch while installing? YES: Go to step 9P5. NO: Go to step 9P11.
5. 9P5: CHECK INPUT SIGNAL FOR TCM. Measure signal voltage for TCM while removing the fuse from FWD switch connector. Connector & Terminal (B55) No. 14 (+) - Chassis ground (-): (Scheme 585): Measuring Signal Voltage For TCM While Removing The Fuse From FWD Switch Connector CHECK: Is the voltage between 6 and 9.1 V in FWD switch while removing? YES: Go to step 9P6. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
6. 9P6: CHECK FWD INDICATOR LIGHT. Turn ignition switch to OFF. Remove combination meter. Remove FWD indicator light bulb from combination meter. CHECK: Is FWD indicator light bulb OK? YES: Go to step 9P7. NO: Replace FWD indicator light bulb.
7. 9P7: CHECK HARNESS CONNECTOR BETWEEN TCM AND COMBINATION METER. Turn ignition switch to OFF. Disconnect connector from combination meter. Measure resistance of harness between TCM and combination meter connector. Connector & Terminal (B54) No. 12 - (i12) No. 6: (Scheme 586): Measuring Resistance Of Harness Between TCM & Combination Meter Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 9P8. NO: Repair open circuit in harness between TCM and combination meter and poor contact in coupling connector.
8. 9P8: CHECK HARNESS CONNECTOR BETWEEN TCM AND COMBINATION METER. Measure resistance of harness connector between TCM and chassis ground to make sure that circuit does not short. Connector & Terminal (B54) No. 12 - Chassis ground: (Scheme 587): Measuring Resistance Of Harness Connector Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 9P9. NO: Repair short circuit in harness between TCM and combination meter connector.
9. 9P9: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Turn ignition switch to OFF. Connect connector to combination meter. Turn ignition switch to ON. Measure signal voltage for TCM while installing and removing the fuse to FWD switch connector. Connector & Terminal (B54) No. 12 - Chassis ground: (Scheme 588): Measuring Signal Voltage For TCM While Installing & Removing The Fuse To FWD Switch Connector CHECK: Is the voltage less than 1 V in FWD switch while installing? YES: Go to step 9P10. NO: Go to step 9P11.
10. 9P10: CHECK OUTPUT SIGNAL EMITTED FROM TCM. Measure signal voltage for TCM while removing the fuse from FWD switch connector. Connector & Terminal (B54) No. 12 - Chassis ground: (Scheme 589): Measuring Signal Voltage For TCM While Removing The Fuse From FWD Switch Connector CHECK: Is the voltage more than 9 V in FWD switch while removing? YES: Go to step 9P11. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
11. 9P11: CHECK POOR CONTACT. CHECK: Is there poor contact in FWD switch circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

Input signal circuit of inhibitor switch is open or shorted.

1. Shift characteristics are erroneous.
2. Engine brake is not effected when select lever is in "3" range.
3. Engine brake is not effected when select lever is in "2" range.
4. Engine brake is not effected when select lever is in "1" range.

Input Signal Circuit Of Inhibitor Switch. Scheme 590

Scheme 591

Scheme 592

Scheme 593

Scheme 594

Scheme 595

Scheme 596

Scheme 597

Scheme 598

Scheme 599

Scheme 600

Scheme 601

Scheme 602

Scheme 603

Scheme 604

Scheme 605

Scheme 606

Scheme 607

Scheme 608

Scheme 609

Scheme 610

Scheme 611

Scheme 612

Scheme 613

Scheme 614

Scheme 615

Scheme 616

Scheme 617

Scheme 618

Scheme 619

Scheme 620

Scheme 621

Scheme 622

Scheme 623

Scheme 624

Scheme 625

Scheme 626

Scheme 627

Scheme 628

Scheme 629

Scheme 630

Scheme 631

Scheme 632

Scheme 633

1. 9T1: CHECK "P" RANGE SWITCH. CHECK: When "P" range is selected, does LED light up? YES: Go to step 9T2. NO: Go to step 9T15.
2. 9T2: CHECK "P" RANGE SWITCH. CHECK: When the "R" range is selected, does "P" range LED light up? YES: Go to step 9T20. NO: Go to step 9T3.
3. 9T3: CHECK "R" RANGE SWITCH. CHECK: When the "R" range is selected, does LED light up? YES: Go to step 9T4. NO: Go to step 9T22.
4. 9T4: CHECK "R" RANGE SWITCH. CHECK: When the "N" range is selected, does "R" range LED light up? YES: Go to step 9T26. NO: Go to step 9T5.
5. 9T5: CHECK "N" RANGE SWITCH. CHECK: When the "N" range is selected, does LED light up? YES: Go to step 9T6. NO: Go to step 9T28.
6. 9T6: CHECK "N" RANGE SWITCH. CHECK: When the "D" range is selected, does "N" range LED light up? YES: Go to step 9T32. NO: Go to step 9T7.
7. 9T7: CHECK "D" RANGE SWITCH. CHECK: When the "D" range is selected, does LED light up? YES: Go to step 9T8. NO: Go to step 9T34.
8. 9T8: CHECK "D" RANGE SWITCH. CHECK: When the "3" range is selected, does "D" range LED light up? YES: Go to step 9T38. NO: Go to step 9T9.
9. 9T9: CHECK "3" RANGE SWITCH. CHECK: When the "3" range is selected, does LED light up? YES: Go to step 9T10. NO: Go to step 9T40.
10. 9T10: CHECK "3" RANGE SWITCH. CHECK: When the "2" range is selected, does "3" range LED light up? YES: Go to step 9T11. NO: Go to step 9T44.
11. 9T11: CHECK "2" RANGE SWITCH. CHECK: When the "2" range is selected, does LED light up? YES: Go to step 9T12. NO: Go to step 9T46.
12. 9T12: CHECK "2" RANGE SWITCH. CHECK: When the "1" range is selected, does "2" range LED light up? YES: Go to step 9T13. NO: Go to step 9T50.
13. 9T13: CHECK "1" RANGE SWITCH. CHECK: When the "1" range is selected, does LED light up? YES: Go to step 9T14. NO: Go to step 9T52.
14. 9T14: CHECK "1" RANGE SWITCH. CHECK: When the "P" range is selected, does "1" range LED light UP? YES: Go to step 9T56. NO: Go to step shift solenoid 1, see «CHECK SHIFT SOLENOID 1»(ref-175204-S25804212892005041800000).
15. 9T15: CHECK HARNESS CONNECTOR BETWEEN INHIBITOR SWITCH AND CHASSIS GROUND. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between inhibitor switch and chassis ground. Connector & Terminal (B12) No. 4 - Chassis ground: (Scheme 591): Measuring Resistance Of Harness Between Inhibitor Switch & Chassis Ground. CHECK: Is the resistance less than 1 ohm? YES: Go to step 9T16. NO: Repair open circuit in harness between inhibitor switch harness.
16. 9T16: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between TCM and inhibitor switch connector. Connector & Terminal (B55) No. 23 - (B12) No. 3: (Scheme 592): Measuring Resistance Of Harness Between TCM & Inhibitor Switch Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 9T17. NO: Repair open circuit in harness between TCM and inhibitor switch connector, and poor contact in coupling connector.
17. 9T17: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 4 - No. 3: (Scheme 593): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance less than 1 ohm in "P" range? YES: Go to step 9T18. NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
18. 9T18: CHECK INPUT SIGNAL FOR TCM. Turn ignition switch to OFF. Connect connector to inhibitor switch. Turn ignition switch to ON. Measure voltage between TCM and chassis ground. Connector & Terminal (B55) No. 23 (+) - Chassis ground (-): (Scheme 594): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage less than 1 V in "P" range? YES: Go to step 9T19. NO: Go to step 9T58.
19. 9T19: CHECK INPUT SIGNAL FOR TCM. Measure voltage between TCM and chassis ground. Connector & Terminal (B55) No. 23 (+) - Chassis ground (-): (Scheme 595): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage more than 8 V in other ranges (except "N" range)? YES: Go to step 9T58. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
20. 9T20: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connectors from inhibitor switch. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 23 - Chassis ground: (Scheme 596): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 9T21. NO: Repair ground short circuit in "P" range circuit.
21. 9T21: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 4 - No. 3: (Scheme 597): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance more than 1 Mohm in other ranges (except "N" range)? YES: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000). NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
22. 9T22: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between TCM and inhibitor switch connector. Connector & Terminal (B55) No. 17 - (B12) No. 2: (Scheme 598): Measuring Resistance Of Harness Between TCM & Inhibitor Switch Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 9T23. NO: Repair open circuit in harness between TCM and inhibitor switch connector, and poor contact in coupling connector.
23. 9T23: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 2 - No. 4: (Scheme 599): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance less than 1 ohm in "R" range? YES: Go to step 9T24. NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
24. 9T24: CHECK INPUT SIGNAL FOR TCM. Turn ignition switch to OFF. Connect connector to inhibitor switch. Turn ignition switch to ON. Measure voltage between TCM and chassis ground. Connector & Terminal (B55) No. 17 (+) - Chassis ground (-): (Scheme 600): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage less than 1 V in "R" range? YES: Go to step 9T25. NO: Go to step 9T58.
25. 9T25: CHECK INPUT SIGNAL FOR TCM. Measure voltage between TCM and chassis ground. Connector & Terminal (B55) No. 17 (+) - Chassis ground (-): (Scheme 601): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage more than 9.5 V in other ranges? YES: Go to step 9T58. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
26. 9T26: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 17 - Chassis ground: (Scheme 602): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 9T27. NO: Repair ground short circuit in "R" range circuit.
27. 9T27: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 2 - No. 4: (Scheme 603): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance more than 1 Mohm in other ranges? YES: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000). NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
28. 9T28: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between TCM and inhibitor switch connector. Connector & Terminal (B55) No. 22 - (B12) No. 1: (Scheme 604): Measuring Resistance Of Harness Between TCM & Inhibitor Switch Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 9T29. NO: Repair open circuit in harness between TCM and inhibitor switch connector, and poor contact in coupling connector.
29. 9T29: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 4 - No. 1: (Scheme 605): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance less than 1 ohm in "N" range? YES: Go to step 9T30. NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
30. 9T30: CHECK INPUT SIGNAL FOR TCM. Turn ignition switch to OFF. Connect connector to inhibitor switch. Turn ignition switch to ON. Measure voltage between TCM and chassis ground. Connector & Terminal (B55) No. 22 (+) - Chassis ground (-): (Scheme 606): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage less than 1 V in "N" range? YES: Go to step 9T31. NO: Go to step 9T58.
31. 9T31: CHECK INPUT SIGNAL FOR TCM. Measure voltage between TCM and chassis ground. Connector & Terminal (B55) No. 22 (+) - Chassis ground (-): (Scheme 607): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage more than 8 V in other ranges (except "P" range)? YES: Go to step 9T58. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
32. 9T32: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connectors from inhibitor switch. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 22 - Chassis ground: (Scheme 608): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 9T33. NO: Repair ground short circuit in "N" range circuit.
33. 9T33: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 1 - No. 4: (Scheme 609): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance more than 1 Mohm in other ranges (except "P" range)? YES: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000). NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
34. 9T34: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connectors from inhibitor switch. Measure resistance of harness between TCM and inhibitor switch connector. Connector & Terminal (B55) No. 8 - (B12) No. 8: (Scheme 610): Measuring Resistance Of Harness Between TCM & Inhibitor Switch Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 9T35. NO: Repair open circuit in harness between TCM and inhibitor switch connector, and poor contact in coupling connector.
35. 9T35: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 4 - No. 8: (Scheme 611): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance less than 1 ohm in "D" range? YES: Go to step 9T36. NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
36. 9T36: CHECK INPUT SIGNAL FOR TCM. Turn ignition switch to OFF. Connect connector to inhibitor switch. Turn ignition switch to ON. Measure voltage between TCM and chassis ground. Connector & Terminal (B55) No. 8 (+) - Chassis ground (-): (Scheme 612): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage less than 1 V in "D" range? YES: Go to step 9T37. NO: Go to step 9T58.
37. 9T37: CHECK INPUT SIGNAL FOR TCM. Measure voltage between TCM and chassis ground. Connector & Terminal (B55) No. 8 (+) - Chassis ground (-): (Scheme 613): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage more than 9.5 V in other ranges? YES: Go to step 9T58. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
38. 9T38: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connectors from inhibitor switch. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 8 - Chassis ground: (Scheme 614): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 9T39. NO: Repair ground short circuit in "D" range circuit.
39. 9T39: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 4 - No. 8: (Scheme 615): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance more than 1 Mohm in other ranges? YES: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000). NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
40. 9T40: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between TCM and inhibitor switch connector. Connector & Terminal (B55) No. 18 - (B12) No. 7: (Scheme 616): Measuring Resistance Of Harness Between TCM & Inhibitor Switch Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 9T41. NO: Repair open circuit in harness between TCM and inhibitor switch connector, and poor contact in coupling connector.
41. 9T41: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 4 - No. 7: (Scheme 617): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance less than 1 ohm in "3" range? YES: Go to step 9T42. NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
42. 9T42: CHECK INPUT SIGNAL FOR TCM. Turn ignition switch to OFF. Connect connector to inhibitor switch. Turn ignition switch to ON. Measure voltage between TCM and chassis ground. Connector & Terminal (B55) No. 18 (+) - Chassis ground (-): (Scheme 618): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage less than 1 V in "3" range? YES: Go to step 9T43. NO: Go to step 9T58.
43. 9T43: CHECK INPUT SIGNAL FOR TCM. Measure voltage between TCM and chassis ground. Connector & Terminal (B55) No. 18 (+) - Chassis ground (-): (Scheme 619): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage more than 9.5 V in other ranges? YES: Go to step 9T58. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
44. 9T44: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B55) No. 18 - Chassis ground: (Scheme 620): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 9T45. NO: Repair ground short circuit in "3" range circuit.
45. 9T45: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 4 - No. 7: (Scheme 621): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance more than 1 Mohm in other ranges? YES: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000). NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
46. 9T46: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between TCM and inhibitor switch connector. Connector & Terminal (B54) No. 10 - (B12) No. 6: (Scheme 622): Measuring Resistance Of Harness Between TCM & Inhibitor Switch Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 9T47. NO: Repair open circuit in harness between TCM and inhibitor switch connector, and poor contact in coupling connector.
47. 9T47: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 6 - No. 4: (Scheme 623): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance less than 1 ohm in "2" range? YES: Go to step 9T48. NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
48. 9T48: CHECK INPUT SIGNAL FOR TCM. Turn ignition switch to OFF. Connect connector to inhibitor switch. Turn ignition switch to ON. Measure voltage between TCM and chassis ground. Connector & Terminal (B54) No. 10 (+) - Chassis ground (-): (Scheme 624): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage less than 1 V in "2" ranges? YES: Go to step 9T49. NO: Go to step 9T58.
49. 9T49: CHECK INPUT SIGNAL FOR TCM. Measure voltage between TCM and chassis ground. Connector & Terminal (B54) No. 10 (+) - Chassis ground (-): (Scheme 625): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage more than 9.5 V in other ranges? YES: Go to step 9T58. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
50. 9T50: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B54) No. 10 - Chassis ground: (Scheme 626): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 9T51. NO: Repair ground short circuit in "2" range circuit.
51. 9T51: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 6 - No. 4: (Scheme 627): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance more than 1 Mohm in other ranges? YES: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000). NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
52. 9T52: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between TCM and inhibitor switch connector. Connector & Terminal (B54) No. 1 - (B12) No. 5: (Scheme 628): Measuring Resistance Of Harness Between TCM & Inhibitor Switch Connector CHECK: Is the resistance less than 1 ohm? YES: Go to step 9T53. NO: Repair open circuit in harness between TCM and inhibitor switch connector, and poor contact in coupling connector.
53. 9T53: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 5 - No. 4: (Scheme 629): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance less than 1 ohm in "1" range? YES: Go to step 9T54. NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
54. 9T54: CHECK INPUT SIGNAL FOR TCM. Turn ignition switch to OFF. Connect connector to inhibitor switch. Turn ignition switch to ON. Measure voltage between TCM and chassis ground. Connector & Terminal (B54) No. 1 (+) - Chassis ground (-): (Scheme 630): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage less than 1 V in "1" range? YES: Go to step 9T55. NO: Go to step 9T58.
55. 9T55: CHECK INPUT SIGNAL FOR TCM. Measure voltage between TCM and chassis ground. Connector & Terminal (B54) No. 1 (+) - Chassis ground (-): (Scheme 631): Measuring Voltage Between TCM & Chassis Ground CHECK: Is the voltage more than 9.5 V in other ranges? YES: Go to step 9T58. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).
56. 9T56: CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR SWITCH. Turn ignition switch to OFF. Disconnect connector from inhibitor switch. Measure resistance of harness between TCM and chassis ground. Connector & Terminal (B54) No. 1 - Chassis ground: (Scheme 632): Measuring Resistance Of Harness Between TCM & Chassis Ground CHECK: Is the resistance more than 1 Mohm? YES: Go to step 9T57. NO: Repair ground short circuit in "1" range circuit.
57. 9T57: CHECK INHIBITOR SWITCH. Measure resistance between inhibitor switch connector receptacle's terminals. Connector & Terminal (T3) No. 5 - No. 4: (Scheme 633): Measuring Resistance Between Inhibitor Switch Connector Receptacle's Terminals CHECK: Is the resistance more than 1 Mohm in other ranges? YES: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000). NO: Adjust inhibitor switch and select cable. See «INHIBITOR SWITCH»(ref-175202-S16932992672005041800000) and «SELECT CABLE»(ref-175206-S36831748512005041900000).
58. 9T58: CHECK POOR CONTACT. CHECK: Is there poor contact in inhibitor switch circuit? YES: Repair poor contact. NO: Replace TCM, see «TRANSMISSION CONTROL MODULE (TCM)»(ref-175202-S19617217002005041800000).

CHECK DIAGNOSIS LIGHT

1. 9AA1: CHECK DIAGNOSIS LIGHT. Turn ignition switch to ON (engine OFF). CHECK: Does diagnosis light illuminate? YES: Go to step FWD light, see «CHECK FWD LIGHT»(ref-175204-S16916234062005041800000) . NO: Check diagnosis light circuit.