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Automatic Transmission (5AT) (Diagnostics): Diagnosis Subaru Outback BR

Automatic Trans 29 illustrations ~2063 words

DIAGNOSIS

  1. AT OIL TEMP light circuit is open or shorted.
  2. Combination meter malfunction

TROUBLE SYMPTOM

  1. When the ignition switch is turned to ON, the AT OIL TEMP light does not illuminate.
  2. AT OIL TEMP light remains lit after engine start.

Scheme 617

Scheme 617: WIRING DIAGRAM
Scheme 617: WIRING DIAGRAM
StepCheckYesNo
1 CHECK AT OIL TEMP LIGHT. Turn the ignition switch to ON.Does the AT OIL TEMP light illuminate?Go to step 2 .Perform self diagnosis of the combination meter.
2 CHECK AT OIL TEMP LIGHT. After the ignition switch is ON, wait for 2 seconds or more.Does the AT OIL TEMP light illuminate?Go to step 3 .Go to step 4 .
3 CHECK AT OIL TEMP LIGHT. Start the engine.Does the AT OIL TEMP light go off?Normal. Go back to "Basic Diagnostic Procedure". Ref. to BASIC DIAGNOSTIC PROCEDURE .Go to step 6 .
4 CHECK SUBARU SELECT MONITOR COMMUNICATION. Connect the Subaru Select Monitor to data link connector.Is the communication between Subaru Select Monitor and TCM normal?Go to step 5 .Check the power supply ground circuit of TCM and Subaru Select Monitor communication. Ref. to DIAGNOSTIC PROCEDURE FOR SUBARU SELECT MONITOR COMMUNICATION .
5 CHECK DTC. Read the DTC relating the TCM using the Subaru Select Monitor.Is DTC displayed?Perform the diagnosis according to DTC.Go to step 6 .
6 CHECK TCM. Read the data of "ATF Temperature Lamp" using the Subaru Select Monitor.Is "ON" displayed?Go to step 7 .Perform self diagnosis of the combination meter.
7 CHECK TCM. Read the data of ATF temperature using Subaru Select Monitor.Is the display 130°C or more?Go to step 8 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
8 CHECK ATF TEMPERATURE. Check the real fluid temperature from the transmission case surface temperature.Is the temperature lower than "ATF temperature" displayed on Subaru Select Monitor?Perform the diagnosis according to DTC P0713.When ATF temperature can be judged as actually high, perform the diagnosis again after the ATF temperature lowers.

DIAGNOSIS PROCEDURE

  1. AWD light circuit is open or shorted.
  2. Combination meter malfunction
  3. TCM malfunction
  1. When the ignition switch is turned to ON, the AWD light does not illuminate.
  2. AWD light remains lit after engine start.

Scheme 618

Scheme 618: WIRING DIAGRAM
Scheme 618: WIRING DIAGRAM
StepCheckYesNo
1 CHECK AWD LIGHT. Turn the ignition switch to ON.Does the AWD light illuminate?Go to step 2 .Perform self diagnosis of the combination meter. Ref. to INSPECTION , Combination Meter System.
2 CHECK AWD LIGHT. Start the engine.Does AWD light go off after two seconds from engine start?Current condition is normal. Go back to "Basic Diagnostic Procedure". Ref. to BASIC DIAGNOSTIC PROCEDURE .Go to step 3 .
3 CHECK COMBINATION METER. Perform self diagnosis of the combination meter. Ref. to INSPECTION , Combination Meter System.Is there any trouble with the combination meter?Repair the combination meter.Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .

DIAGNOSIS PROCEDURE

Defective harness connector

Subaru Select Monitor communication failure

Scheme 619

Scheme 619: WIRING DIAGRAM
Scheme 619: WIRING DIAGRAM
StepCheckYesNo
1 CHECK SUBARU SELECT MONITOR POWER SUPPLY CIRCUIT. Measure the voltage between data link connector and chassis ground. Connector & terminal (B40) No. 16 (+) - Chassis ground (-)Is the voltage 10 V or more?Go to step 2 .Repair harness connector between the battery and data link connector, and poor contact of the connector.
2 CHECK SUBARU SELECT MONITOR GROUND CIRCUIT. Measure the resistance of harness between data link connector and chassis ground. Connector & terminal (B40) No. 4 - Chassis ground: (B40) No. 5 - Chassis groundIs the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness between data link connector and ground terminal, and poor contact of connector.
3 CHECK COMMUNICATION OF SUBARU SELECT MONITOR. Turn the ignition switch to ON. Check communication with the transmission system using the Subaru Select Monitor.Is the name of system displayed on Subaru Select Monitor?Go to step 8 .Go to step 4 .
4 CHECK COMMUNICATION OF SUBARU SELECT MONITOR. Turn the ignition switch to OFF. Disconnect the TCM connector. Turn the ignition switch to ON. Check communication with the engine system.Is the name of system displayed on Subaru Select Monitor?Go to step 6 .Go to step 5 .
5 CHECK COMMUNICATION OF SUBARU SELECT MONITOR. Turn the ignition switch to OFF. Connect the TCM connector. Disconnect the connector from ECM. Turn the ignition switch to ON. Check communication with the transmission system.Is the name of system displayed on Subaru Select Monitor?Inspect the ECM.Go to step 6 .
6 CHECK HARNESS CONNECTOR BETWEEN EACH CONTROL MODULE AND DATA LINK CONNECTOR. Turn the ignition switch to OFF. Disconnect the TCM and ECM connector. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B40) No. 7 - Chassis groundIs the resistance 1 Mohms or more?Go to step 7 .Check harness and connector between each control module and data link connector.
7 CHECK OUTPUT SIGNAL OF TCM. Turn the ignition switch to ON. Measure the voltage between TCM and chassis ground. Connector & terminal (B40) No. 7 (+) - Chassis ground (-)Is the voltage 1 V or more?Check harness and connector between each control module and data link connector.Go to step 8 .
8 CHECK HARNESS CONNECTOR BETWEEN TCM AND DATA LINK CONNECTOR. Measure the resistance between TCM connector and data link connector. Connector & terminal (B54) No. 8 - (B40) No. 7Is the resistance less than 1 ohms?Go to step 9 .Check the harness and connector between TCM and data link connector.
9 CHECK INSTALLATION OF TCM CONNECTOR. Turn the ignition switch to OFF.Is TCM connector connected to TCM?Go to step 10 .Connect the TCM connector to TCM.
10 CHECK INSTALLATION OF TRANSMISSION HARNESS CONNECTOR.Is the transmission harness connector connected to bulkhead harness connector?Go to step 11 .Connect the bulkhead harness connector to transmission harness connector.
11 CHECK POOR CONTACT OF CONNECTORS.Is there poor contact of control module power supply and data link connector?Repair the poor contact.Go to step 12 .
12 CHECK POWER SUPPLY OF TCM. Disconnect the connector from TCM. Turn the ignition switch to ON. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 24 (+) - Chassis ground (-): (B54) No. 25 (+) - Chassis ground (-): (B54) No. 26 (+) - Chassis ground (-)Is the voltage 10 - 13 V?Go to step 15 .Go to step 13 .
13 CHECK M/B FUSE. Turn the ignition switch to OFF. Remove the fuse (No. 16 and No. 17).Is the fuse blown out?Replace the fuse.Go to step 14 .
14 CHECK HARNESS. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 24 - Chassis ground: (B54) No. 25 - Chassis ground: (B54) No. 26 - Chassis groundIs the resistance less than 10 ohms?Replace the fuse. If the replaced fuse blows out easily, repair the short circuit in the harness between the fuse and the TCM.Go to step 15 .
15 CHECK IGNITION POWER SUPPLY CIRCUIT. Turn the ignition switch to ON. Measure the ignition power supply voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 18 (+) - Chassis ground (-): (B54) No. 19 (+) - Chassis ground (-)Is the voltage 10 - 13 V?Go to step 17 .Go to step 16 .
16 CHECK F/B FUSE. Remove the fuse (No. 12).Is the fuse blown out?Replace the fuse. If the replaced fuse blows out easily, repair the short circuit in the harness between the fuse and the TCM.Go to step 17 .
17 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connector from TCM. Measure the resistance of the harness between TCM and transmission ground. Connector & terminal (B54) No. 22 - Transmission ground: (B54) No. 23 - Transmission groundIs the resistance 1 Mohms or more?Repair the short circuit of harness between TCM and transmission harness connector, and poor contact of connector.Go to step 18 .
18 CHECK POOR CONTACT OF CONNECTORS.Is there poor contact of TCM power supply, ground and data link connector?Repair the connector.Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .

DIAGNOSIS PROCEDURE

DTC DETECTING CONDITION

The inhibitor switch is open or short.

  1. Shift characteristics are erroneous.
  2. Select lever position indicator does not match with select lever.
  3. Select lever position indicator does not illuminate.
  4. N-D, N-R shock occur.

Scheme 620

Scheme 620: WIRING DIAGRAM
Scheme 620: WIRING DIAGRAM

DIAGNOSIS PROCEDURE Step Check Yes No 1 CHECK DTC OF TCM. Is DTC of AT CAN communication circuit displayed? Perform the diagnosis according to DTC. Go to step 2 . 2 CHECK INHIBITOR SWITCH. Using Subaru Select Monitor, read the data of "Inhibitor SW 1 - 4" for each range. Is the display as in the table of step 2? Go to step 9 . Go to step 3 . 3 CHECK INHIBITOR SWITCH. Using Subaru Select Monitor, read the data of "Inhibitor SW 1" for "P" and "D" ranges. Is the display "High" for both "P" and "D"? Go to step 4 . Go to step 7 . 4 CHECK INHIBITOR SWITCH. Using Subaru Select Monitor, read the data of "Inhibitor SW 2" for "R" and "D" ranges. Is the display "High" for both "R" and "D"? Go to step 5 . Go to step 7 . 5 CHECK INHIBITOR SWITCH. Using Subaru Select Monitor, read the data of "Inhibitor SW 3" for "N" and "D" ranges. Is the display "High" for both "N" and "D"? Go to step 6 . Go to step 7 . 6 CHECK INHIBITOR SWITCH. Using Subaru Select Monitor, read the data of "Inhibitor SW 4" for "P" and "N" ranges. Is the display "High" for both "P" and "N"? Go to step 8 . Go to step 7 . 7 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B55) No. 8 - (B12) No. 4: (B55) No. 9 - (B12) No. 3: (B55) No. 10 - (B12) No. 2: (B55) No. 11 - (B12) No. 1: Is the resistance less than 1 ohms? Go to step 8 . Repair the open circuit of harness between TCM connector and transmission connector. 8 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B55) No. 8 - Chassis ground: (B55) No. 9 - Chassis ground: (B55) No. 10 - Chassis ground: (B55) No. 11 - Chassis ground: Is the resistance 1 Mohms or more? Go to step 9 . Repair the short circuit of harness between TCM connector and transmission connector. 9 CHECK INPUT SIGNAL CIRCUIT FOR TCM. Turn the ignition switch to OFF. Disconnect the transmission connector (B12). Connect the TCM connector. Turn the ignition switch to ON. Measure the voltage between TCM terminals. Connector & terminal (B55) No. 8 (+) - (B54) No. 23 (-): (B55) No. 9 (+) - (B54) No. 23 (-): (B55) No. 10 (+) - (B54) No. 23 (-): (B55) No. 11 (+) - (B54) No. 23 (-): Is the voltage of "Inhibitor SW 1 - 4" 8 V or more? Go to step 11 . Go to step 10 . 10 CHECK TCM I/O SIGNAL. Check I/O signal of power supply and ground. Ref. to ELECTRICAL SPECIFICATION , Transmission Control Module (TCM) 1/O Signal. Is TCM I/O signal OK? Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) . Repair the open or short circuit for power supply and ground. 11 CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Lift up the vehicle. Start the engine. Using Subaru Select Monitor, read the data of "Front Wheel Speed" and "AT Turbine Speed 2". Ref. to READ CURRENT DATA . NOTE: The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE . Does the speedometer indication increase as "Front Wheel Speed" and "AT Turbine Speed 2" values increase? Go to step 12 . Replace the control valve body. Ref. to CONTROL VALVE BODY . 12 CHECK INPUT SIGNAL FOR TCM. Drive at 4th of manual mode. NOTE: Turbine speed sensor 1 signal can be measured only on 4th speed. Using Subaru Select Monitor, read the data of "Rear Wheel Speed" and "AT Turbine Speed 1". Ref. to READ CURRENT DATA . NOTE: The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE . Does the speedometer indication increase as "Rear Wheel Speed" and "AT Turbine Speed 1" values increase? Go to step 13 . Repair the open circuit of harness or poor contact of connector between TCM and rear vehicle speed sensor and turbine speed sensor 1. 13 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the connector from control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T3) No. 4 - (T14) No. 2: (T3) No. 3 - (T14) No. 3: (T3) No. 2 - (T14) No. 5: (T3) No. 1 - (T14) No. 6: Is the resistance less than 1 ohms? Go to step 14 . Repair the open circuit of harness between control valve body connector and transmission connector. 14 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T14) No. 2 - Transmission ground: (T14) No. 3 - Transmission ground: (T14) No. 5 - Transmission ground: (T14) No. 6 - Transmission ground: Is the resistance 1 Mohms or more? Go to step 15 . Repair the short circuit of harness between control valve body connector and transmission connector. 15 CHECK FOR POOR CONTACT. Is there any poor contact of "Inhibitor SW 1 - 4" monitor circuit? Repair the poor contact. Replace the control valve body. Ref. to CONTROL VALVE BODY

Scheme 621

Scheme 621
Scheme 621

Input signal circuit to ATF temperature sensor is open.

Excessive shift shock

Scheme 622

Scheme 622: WIRING DIAGRAM
Scheme 622: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B55) No. 17 - (B11) No. 5: (B55) No. 18 - (B11) No. 12Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK ATF TEMPERATURE SENSOR. Turn the ignition switch to OFF. Connect the connectors to transmission and TCM. Start the engine. Warm up the transmission until the ATF temperature exceeds 80°C (176°F). Disconnect the connector from transmission. Measure the resistance between transmission connector terminals. Connector & terminal (T4) No. 5 - (T4) No. 12Is the resistance 300 - 800 ohms?Go to step 3 .Go to step 5 .
3 CHECK ATF TEMPERATURE SENSOR. Measure the resistance between transmission connector terminals. Connector & terminal (T4) No. 5 - (T4) No. 12Does the resistance value increase as the ATF temperature decreases?Go to step 4 .Go to step 5 .
4 CHECK INPUT SIGNAL FOR TCM. Connect the connector. Turn the ignition switch to ON. Read the data of ATF temperature using Subaru Select Monitor.Does the ATF temperature gradually decrease?Check for poor contact of the harness between the ATF temperature sensor and transmission connector, and repair the fault location.Go to step 6 .
5 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 5 - (T10) No. 3: (T4) No. 12 - (T10) No. 4Is the resistance less than 1 ohms?Replace the control valve body. Ref. to CONTROL VALVE BODY .Repair the open circuit of harness between transmission connector and control valve body connector.
6 CHECK FOR POOR CONTACT.Is there poor contact of ATF temperature sensor circuit?Repair the poor contact.Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Input signal circuit to ATF temperature sensor is shorted.

Excessive shift shock

Input signal circuit of TCM is open or shorted.

  1. Excessive shift shock
  2. Does not shift to 5th.

Scheme 623

Scheme 623: WIRING DIAGRAM
Scheme 623: WIRING DIAGRAM
StepCheckYesNo
1 CHECK TCM I/O SIGNAL. Check I/O signal of power supply and ground. Ref. to ELECTRICAL SPECIFICATION , Transmission Control Module (TCM) 1/O Signal.Is TCM I/O signal OK?Go to step 2 .Repair the open or short circuit for power supply and ground.
2 CHECK TCM AND TRANSMISSION HARNESS CONNECTOR. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B55) No. 16 - (B11) No. 2: (B55) No. 26 - (B12) No. 7: (B55) No. 27 - (B11) No. 7Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness between TCM connector and transmission connector.
3 CHECK TCM AND TRANSMISSION HARNESS CONNECTOR. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 16 - Chassis ground: (B55) No. 26 - Chassis ground: (B55) No. 27 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of harness between TCM connector and transmission connector.
4 CHECK TCM POWER SUPPLY OUTPUT. Connect the connector to TCM. (Transmission connector is disconnected) Turn the ignition switch to ON. Measure the voltage between transmission connector and chassis ground. Connector & terminal (B12) No. 7 (+) - Chassis ground (-)Is the voltage 10 - 13 V?Go to step 5 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
5 CHECK TURBINE SPEED SENSOR FOR TCM. Measure the voltage between TCM connector terminals. Connector & terminal (B12) No. 7 (+) - (B11) No. 2 (-)Is the voltage 4 - 6 V?Go to step 6 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
6 CHECK HARNESS ASSEMBLY (TURBINE SPEED SENSOR GROUND). Check the installing condition of ground connecting harness of harness assembly (used for both of turbine speed sensor 1, rear vehicle speed sensor).Is the ground connecting harness installed to transmission body correctly, or the harness and terminals not damaged?Go to step 7 .When poor installation of ground occurs, install it securely. Replace the transmission assembly if the harness or terminal is damaged. Ref. to AUTOMATIC TRANSMISSION ASSEMBLY .
7 CHECK HARNESS ASSEMBLY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Disconnect the connector from turbine speed sensor 1. Measure the resistance between transmission connector and turbine speed sensor 1 connector. Connector & terminal (T3) No. 7 - (AT1) No. 2: (T4) No. 7 - (AT1) No. 3: (T4) No. 2 - (AT1) No. 1Is the resistance less than 1 ohms?Go to step 8 .Repair the open circuit of harness or poor contact of connector between TCM connector and transmission connector.
8 CHECK HARNESS ASSEMBLY. Measure the resistance between transmission connector and chassis ground. Connector & terminal (T3) No. 7 - Chassis ground: (T4) No. 7 - Chassis ground: (T4) No. 2 - Chassis groundIs the resistance 1 Mohms or more?Go to step 9 .Repair the short circuit of harness between TCM connector and transmission connector.
9 CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Lift up the vehicle. Start the engine. Drive at 4th of manual mode. NOTE: Turbine speed sensor 1 signal can be measured only on 4th speed. Using Subaru Select Monitor, read the data of "AT Turbine Speed 1". Ref. to READ CURRENT DATA . NOTE: The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE .Are the values of "AT Turbine Speed 1" and "AT Turbine Speed 2" almost the same?Check for poor contact of the harness between the ATF temperature sensor and transmission connector, and repair the fault location.Replace the turbine speed sensor 1. Ref. to TURBINE SPEED SENSOR 1 .
NOTE
Turbine speed sensor 1 signal can be measured only on 4th speed.
NOTE
The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE .

DIAGNOSIS PROCEDURE

Brake switch malfunction, open input signal circuit

Brake down control does not operate in manual mode.

Scheme 624

Scheme 624: WIRING DIAGRAM
Scheme 624: WIRING DIAGRAM
StepCheckYesNo
1 CHECK DTC.Is any of following DTC displayed?/AT CAN Communication Circuit/Output Speed Sensor Circuit/AT Vehicle Speed Sensor Circuit Malfunction (Rear Wheel)/VDC Brake SW CircuitPerform the diagnosis according to DTC.Go to step 2 .
2 CHECK BODY INTEGRATED UNIT. Turn the ignition switch to OFF. Connect the Subaru Select Monitor to data link connector. Turn the ignition switch to ON. Run the Subaru Select Monitor. Depress the brake pedal. Read the data of "Stop Light Switch" using Subaru Select Monitor. Ref. to READ CURRENT DATA .Is "ON" displayed?Go to step 3 .Go to step 4 .
3 CHECK TCM. Read the data of "Stop Light Switch" using Subaru Select Monitor. Ref. to READ CURRENT DATA .Is "ON" displayed?A temporary poor contact of connector or harness may be the cause. Check the poor contact.Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
4 CHECK BODY INTEGRATED UNIT INPUT SIGNAL. Disconnect the connector from body integrated unit. Depress the brake pedal. Measure the voltage between body integrated unit connector and chassis ground. Connector & terminal (B280) No. 10 (+) - Chassis ground (-)Is the voltage 10 V or more?Go to step 7 .Go to step 5 .
5 CHECK HARNESS CONNECTOR BETWEEN BODY INTEGRATED UNIT AND STOP LIGHT SWITCH. Turn the ignition switch to OFF. Disconnect the connector from stop light switch. Measure the resistance of harness between body integrated unit connector and stop light switch connector. Connector & terminal (B280) No. 10 - (B65) No. 3Is the resistance less than 1 ohms?Go to step 6 .Repair the open circuit of harness between body integrated unit connector and stop light switch connector.
6 CHECK HARNESS CONNECTOR BETWEEN BODY INTEGRATED UNIT AND STOP LIGHT SWITCH. Measure the resistance of harness between body integrated unit connector and stop light switch connector. Connector & terminal (B280) No. 10 - Chassis groundIs the resistance 1 Mohms or more?Go to step 7 .Repair the short circuit of harness between body integrated unit connector and stop light switch connector.
7 CHECK FOR POOR CONTACT.Is there poor contact of input signal of brake switch?Repair the poor contact.Check body integrated unit.

DIAGNOSIS PROCEDURE

  1. AT vehicle speed signal is abnormal.
  2. The harness connector between TCM and vehicle speed sensor is open or shorted.
  1. Shifting quality malfunction
  2. Driving performance is poor.

Scheme 625

Scheme 625: WIRING DIAGRAM
Scheme 625: WIRING DIAGRAM
StepCheckYesNo
1 CHECK TCM I/O SIGNAL. Check I/O signal of power supply and ground. Ref. to ELECTRICAL SPECIFICATION , Transmission Control Module (TCM) 1/O Signal.Is TCM I/O signal OK?Go to step 2 .Repair the open or short circuit for power supply and ground.
2 CHECK TCM AND TRANSMISSION HARNESS CONNECTOR. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B55) No. 16 - (B11) No. 2: (B55) No. 24 - (B11) No. 1: (B55) No. 27 - (B11) No. 7Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness between TCM connector and transmission connector.
3 CHECK TCM AND TRANSMISSION HARNESS CONNECTOR. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 24 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of harness between TCM connector and transmission connector.
4 CHECK TCM POWER SUPPLY OUTPUT. Connect the connector to TCM. (Transmission connector is disconnected) Turn the ignition switch to ON. Measure the voltage between transmission connector and chassis ground. Connector & terminal (B11) No. 7 (+) - Chassis ground (-)Is the voltage 10 - 13 V?Go to step 5 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
5 CHECK TURBINE SPEED SENSOR FOR TCM. Measure the voltage change between TCM connector terminals. Connector & terminal (B11) No. 1 (+) - (B11) No. 2 (-)Is the voltage 4 - 6 V?Go to step 6 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
6 CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Lift up the vehicle. Start the engine. Read the data of "Front Wheel Speed" using Subaru Select Monitor. Ref. to READ CURRENT DATA . NOTE: The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE .Does the speedometer indication increase as "Front Wheel Speed" data increases?Check for poor contact of the harness between the ATF temperature sensor and transmission connector, and repair the fault location.Go to step 7 .
7 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 1 - (T10) No. 2Is the resistance less than 1 ohms?Go to step 8 .Repair the open circuit of harness between control valve body connector and transmission connector.
8 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T10) No. 2 - Transmission groundIs the resistance 1 Mohms or more?Go to step 9 .Repair the short circuit of harness between transmission connector and transmission ground.
9 CHECK HARNESS CONNECTOR BETWEEN CONTROL VALVE BODY AND VEHICLE SPEED SENSOR. Disconnect the connector from vehicle speed sensor. Measure the resistance of harness between control valve body connector and vehicle speed sensor connector. Connector & terminal (T10) No. 2 - (T15) No. 2: (T14) No. 1 - (T15) No. 3: (T14) No. 4 - (715) No. 1Is the resistance less than 1 ohms?Go to step 10 .Replace the control valve body. Ref. to CONTROL VALVE BODY .
10 CHECK HARNESS CONNECTOR BETWEEN CONTROL VALVE BODY AND VEHICLE SPEED SENSOR. Measure the resistance of harness between control valve body connector and transmission ground. Connector & terminal (T10) No. 2 - Transmission groundIs the resistance 1 Mohms or more?Replace the vehicle speed sensor.Replace the control valve body. Ref. to CONTROL VALVE BODY .
NOTE
The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE .
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Brake switch malfunction, open input signal circuit

Gear is not shifted down when climbing a hill.

Target gear ratio and actual gear ratio do not match.

  1. Shift point is too high or too low.
  2. Excessive shift shock
  3. Gear is not changed.
  4. The vehicle does not move in "D" or "R" range with the engine running at high speed.
StepCheckYesNo
1 CHECK DTC.Is any of the following DTCs displayed? P0751, P0753, P0756, P0758, P0761, P0763, P0766, P0768, P0771, P0773Perform the diagnosis according to DTC.Go to step 2 .
2 CHECK DTC.Is DTC P1718 displayed?Perform the diagnosis according to DTC.Go to step 3 .
3 CHECK AT TURBINE SPEED SENSOR CIRCUIT. Perform diagnosis according to DTC P0715. Ref. to DTC P0715 INPUT/TURBINE SPEED SENSOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).Is there any trouble?Check the turbine speed sensor 1 circuit.Go to step 4 .
4 CHECK AT TURBINE SPEED SENSOR CIRCUIT. Perform diagnosis according to DTC P1710. Ref. to DTC P1710 TORQUE CONVERTER TURBINE 2 SPEED SIGNAL CIRCUIT MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).Is there any trouble?Check the turbine speed sensor 2 circuit.Go to step 5 .
5 CHECK AT VEHICLE SPEED SENSOR CIRCUIT. Perform diagnosis according to DTC P0720. Ref. to DTC P0720 OUTPUT SPEED SENSOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).Is there any trouble?Check for poor contact of the front vehicle speed sensor circuit harness and repair the fault location.Go to step 6 .
6 CHECK AT VEHICLE SPEED SENSOR CIRCUIT. Perform diagnosis according to DTC P1706. Ref. to DTC P1706 AT VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION (REAR WHEEL) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).Is there any trouble?Check for poor contact of the rear vehicle speed sensor circuit harness and repair the fault location.Go to step 7 .
7 CHECK TRANSMISSION RANGE SENSOR CIRCUIT (PRNDL INPUT). Perform diagnosis according to DTC P0705. Ref. to DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT (PRNDL INPUT) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).Is there any trouble?Check the inhibitor switch circuit.There are malfunctions in TCM, TCM connector poor contact, or transmission assembly mechanical malfunction.

DIAGNOSIS PROCEDURE

  1. Lock up clutch malfunction
  2. Defective torque converter assembly
  3. Defective control valve
  4. Defective turbine speed sensor 1 or 2

No lock-up occurs. (After engine is warmed up)

StepCheckYesNo
1 CHECK DTC OF TCM.Is any DTC of the followings detected?P0715, P0720, P0753, P0758, P0763, P0768, P0773, P0751, P0756, P0761, P0766, P0771, P1710, P1718 Perform the diagnosis according to each DTC.Go to step 2 .
2 DRIVING CHECK FOR LOCK-UP CONDITION. Keep the same vehicle speed at 60 km/h with 10% or less of "Accel. Opening Angle" and 500 kPa or more of "L/U Solenoid Pressure" on Subaru Select Monitor. Ref. to READ CURRENT DATA . Perform a driving check in the Inspection Mode. Ref. to INSPECTION MODE . Using Subaru Select Monitor, read the data of "Engine Speed" and "Turbine Revolution Speed".Are "Engine Speed" and "Turbine Revolution Speed" almost the same?Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty.Go to step 3 .
3 DRIVING CHECK FOR LOCK-UP CONDITION. Perform the Clear Memory Mode. Keep the same vehicle speed at 60 km/h for one minute or more with 10% or less of "Accel. Opening Angle" and 500 kPa or more of "L/U Solenoid Pressure" on Subaru Select Monitor. Ref. to READ CURRENT DATA . Perform a driving check in the Inspection Mode. Ref. to INSPECTION MODE . Turn the ignition switch to OFF. Start the engine. Read the DTC. Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .Does the AT OIL TEMP light blink and is DTC P0741 displayed?Replace the transmission assembly when DTC P0741 is displayed. When DTC other than P0741 is displayed, perform the diagnosis corresponding to the DTC.Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty.

DIAGNOSIS PROCEDURE

The output signal circuit of lock up solenoid is open or shorted.

No lock-up occurs. (After engine is warmed up)

Scheme 626

Scheme 626: WIRING DIAGRAM
Scheme 626: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 7 - (B11) No. 20Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 7 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. NOTE: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 20 - (T11) No. 5Is the resistance less than 1 ohms?Go to step 4 .Repair the open circuit of harness between transmission connector and control valve body connector.
4 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 5 - Transmission groundIs the resistance 1 Mohms or more?Go to step 5 .Repair the short circuit of harness between control valve body connector and transmission ground.
5 CHECK LOCK-UP SOLENOID. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 5 - Transmission groundIs the resistance 3 - 9 ohms?Go to step 6 .Replace the control valve body. Ref. to CONTROL VALVE BODY .
6 CHECK FOR POOR CONTACT. Check the TCM connector, transmission connector and control valve body connector.Is there poor contact, loosing terminal, entering foreign matter, or damaging connector body?Repair the poor contact.Go to step 7 .
7 CHECK AFTER REPAIR. Perform the Clear Memory Mode. Drive for a while and read DTC.Is DTC displayed?Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty.
NOTE
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

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

Excessive shift shock

Scheme 627

Scheme 627: WIRING DIAGRAM
Scheme 627: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 6 - (B11) No. 19Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B55) No. 6 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 19 - (T11) No. 1Is the resistance less than 1 ohms?Go to step 4 .Repair the open circuit of harness between transmission connector and control valve body connector.
4 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 1 - Transmission groundIs the resistance 1 Mohms or more?Repair the open circuit of harness between control valve body connector and transmission ground.Go to step 5 .
5 CHECK LINE PRESSURE SOLENOID. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 1 - Transmission groundIs the resistance 3 - 9 ohms?Go to step 6 .Replace the control valve body. Ref. to CONTROL VALVE BODY .
6 CHECK FOR POOR CONTACT. Check the TCM connector, transmission connector and control valve body connector.Is there poor contact, loosing terminal, entering foreign matter, or damaging connector body?Repair the poor contact.Go to step 7 .
7 CHECK AFTER REPAIR. Perform the Clear Memory Mode. Drive for a while and read DTC.Is DTC displayed?Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Output signal of front brake solenoid does not match with oil pressure.

Locked to 1st gear.

Scheme 628

Scheme 628: WIRING DIAGRAM
Scheme 628: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 4 - (B11) No. 17: (B55) No. 15 - (B11) No. 3Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 4 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Turn the ignition switch to ON. Read the data of "F/B Fluid Pressure" using Subaru Select Monitor.Is "OFF" displayed?Go to step 4 .Go to step 6 .
4 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to OFF. Start the engine. Shift to 1st speed while checking the current gear position using Subaru Select Monitor. Read the data of "F/B Fluid Pressure" using Subaru Select Monitor.Is "ON" displayed?Check for poor contact of harness in the solenoid output and oil pressure SW input, and repair the fault location.Go to step 5 .
5 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (B11) No. 3 - (T10) No. 7: (B11) No. 17 - (711) No. 8Is the resistance less than 1 ohms?Replace the control valve body. Ref. to CONTROL VALVE BODY .Replace the transmission harness assembly.
6 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T10) No. 7 - Transmission groundIs the resistance 1 Mohms or more?Replace the control valve body. Ref. to CONTROL VALVE BODY .Replace the transmission harness assembly.
CAUTION
Do not drain ATF until it cools down.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Output signal circuit of front brake solenoid is open or shorted.

Locked to 1st gear.

Scheme 629

Scheme 629: WIRING DIAGRAM
Scheme 629: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 4 - (B11) No. 17Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 4 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 17 - (T11) No. 8Is the resistance less than 1 ohms?Go to step 4 .Repair the open circuit of harness between transmission connector and control valve body connector.
4 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 8 - Transmission groundIs the resistance 1 Mohms or more?Repair the open circuit of harness between control valve body connector and transmission ground.Go to step 5 .
5 CHECK FRONT BRAKE SOLENOID. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 8 - Transmission groundIs the resistance 3 - 9 ohms?Go to step 6 .Replace the control valve body. Ref. to CONTROL VALVE BODY .
6 CHECK FOR POOR CONTACT. Check the TCM connector, transmission connector and control valve body connector.Is there poor contact, loosing terminal, entering foreign matter, or damaging connector body?Repair the poor contact.Go to step 7 .
7 CHECK AFTER REPAIR. Perform the Clear Memory Mode. Drive for a while and read DTC.Is DTC displayed?Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Output signal value of input clutch solenoid and oil pressure does not match.

Locked to 1st or 4th gear.

Scheme 630

Scheme 630: WIRING DIAGRAM
Scheme 630: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 3 - (B11) No. 18: (B55) No. 20 - (B11) No. 11Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 20 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Turn the ignition switch to ON. Read the data of "I/C Fluid Pressure" using Subaru Select Monitor.Is "OFF" displayed?Go to step 4 .Go to step 6 .
4 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to OFF. Start the engine. Drive the vehicle on 4th speed of manual mode with checking current gear position using Subaru Select Monitor. Read the data of "I/C Fluid Pressure" using Subaru Select Monitor.Is "ON" displayed?Check for poor contact of harness in the solenoid output and oil pressure SW input, and repair the fault location.Go to step 5 .
5 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 11 - (T10) No. 8: (T4) No. 18 - (T11) No. 3Is the resistance less than 1 ohms?Replace the control valve body. Ref. to CONTROL VALVE BODY .Replace the transmission harness assembly.
6 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T10) No. 8 - Transmission groundIs the resistance 1 Mohms or more?Replace the control valve body. Ref. to CONTROL VALVE BODY .Replace the transmission harness assembly.
CAUTION
Do not drain ATF until it cools down.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Output signal circuit of input clutch solenoid is open or shorted.

Locked to 1st or 4th gear.

Scheme 631

Scheme 631: WIRING DIAGRAM
Scheme 631: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 3 - (B11) No. 18Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and body harness. Connector & terminal (B55) No. 3 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 18 - (T11) No. 3Is the resistance less than 1 ohms?Go to step 4 .Repair the open circuit of harness between transmission connector and control valve body connector.
4 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 3 - Transmission groundIs the resistance 1 Mohms or more?Repair the open circuit of harness between control valve body connector and transmission ground.Go to step 5 .
5 CHECK INPUT CLUTCH SOLENOID. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 3 - Transmission groundIs the resistance 3 - 9 ohms?Go to step 6 .Replace the control valve body. Ref. to CONTROL VALVE BODY .
6 CHECK FOR POOR CONTACT. Check the TCM connector, transmission connector and control valve body connector.Is there poor contact, loosing terminal, entering foreign matter, or damaging connector body?Repair the poor contact.Go to step 7 .
7 CHECK AFTER REPAIR. Perform the Clear Memory Mode. Drive for a while and read DTC.Is DTC displayed?Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Output signal value of high & low reverse clutch solenoid and oil pressure do not match.

Locked to 1st gear.

Scheme 632

Scheme 632: WIRING DIAGRAM
Scheme 632: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 5 - (B11) No. 15: (B55) No. 14 - (B11) No. 4Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 14 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Turn the ignition switch to ON. Read the data of "H&LR/C Fluid Pressure" using Subaru Select Monitor.Is "OFF" displayed?Go to step 4 .Go to step 6 .
4 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to OFF. Start the engine. Set the select lever to "N" range while depressing the brake pedal. Read the data of "H&LR/C Fluid Pressure" using Subaru Select Monitor.Does the display show "OFF"?Check for poor contact of harness in the solenoid output and oil pressure SW input, and repair the fault location.Go to step 5 .
5 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 4 - (T10) No. 6: (T4) No. 15 - (T11) No. 2Is the resistance less than 1 ohms?Replace the control valve body. Ref. to CONTROL VALVE BODY .Replace the transmission harness assembly.
6 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T10) No. 6 - Transmission groundIs the resistance 1 Mohms or more?Replace the control valve body. Ref. to CONTROL VALVE BODY .Replace the transmission harness assembly.
CAUTION
Do not drain ATF until it cools down.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Output signal circuit of high & low reverse clutch solenoid is open or shorted.

Locked to 1st gear.

Scheme 633

Scheme 633: WIRING DIAGRAM
Scheme 633: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 5 - (B11) No. 15Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 5 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 15 - (T11) No. 2Is the resistance less than 1 ohms?Go to step 4 .Repair the open circuit of harness between transmission connector and control valve body connector.
4 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 2 - Transmission groundIs the resistance 1 Mohms or more?Repair the open circuit of harness between control valve body connector and transmission ground.Go to step 5 .
5 CHECK HIGH & LOW REVERSE CLUTCH SOLENOID. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 2 - Transmission groundIs the resistance 3 - 9 ohms?Go to step 6 .Replace the control valve body. Ref. to CONTROL VALVE BODY .
6 CHECK FOR POOR CONTACT. Check the TCM connector, transmission connector and control valve body connector.Is there poor contact, loosing terminal, entering foreign matter, or damaging connector body?Repair the poor contact.Go to step 7 .
7 CHECK AFTER REPAIR. Perform the Clear Memory Mode. Drive for a while and read DTC.Is DTC displayed?Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Output signal value of direct clutch solenoid and oil pressure does not match.

Locked to 1st or 4th gear.

Scheme 634

Scheme 634: WIRING DIAGRAM
Scheme 634: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 1 - (B11) No. 16: (B55) No. 22 - (B11) No. 10Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND BODY HARNESS. Measure the resistance of harness between TCM connector and body harness. Connector & terminal (B55) No. 22 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Turn the ignition switch to ON. Read the data of "D/C Fluid Pressure" using Subaru Select Monitor.Is "OFF" displayed?Go to step 4 .Go to step 6 .
4 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to OFF. Start the engine. Shift to 2nd speed of manual mode and depress the brake with checking current gear position using Subaru Select Monitor. Read the data of "D/C Fluid Pressure" using Subaru Select Monitor.Is "ON" displayed?Check for poor contact of harness in the solenoid output and oil pressure SW input, and repair the fault location.Go to step 5 .
5 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 10 - (T10) No. 9: (T4) No. 16 - (T11) No. 4Is the resistance less than 1 ohms?Replace the control valve body. Ref. to CONTROL VALVE BODY .Replace the transmission harness assembly.
6 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T10) No. 9 - Transmission groundIs the resistance 1 Mohms or more?Replace the control valve body. Ref. to CONTROL VALVE BODY .Replace the transmission harness assembly.
CAUTION
Do not drain ATF until it cools down.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

The output signal circuit of direct clutch solenoid is open or shorted.

Locked to 1st or 4th gear.

Scheme 635

Scheme 635: WIRING DIAGRAM
Scheme 635: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 1 - (B11) No. 16Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 1 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 16 - (T11) No. 4Is the resistance less than 1 ohms?Go to step 4 .Repair the open circuit of harness between transmission connector and control valve body connector.
4 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 4 - Transmission groundIs the resistance 1 Mohms or more?Repair the open circuit of harness between control valve body connector and transmission ground.Go to step 5 .
5 CHECK DIRECT CLUTCH SOLENOID. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 4 - Transmission groundIs the resistance 3 - 9 ohms?Go to step 6 .Replace the control valve body. Ref. to CONTROL VALVE BODY .
6 CHECK FOR POOR CONTACT. Check the TCM connector, transmission connector and control valve body connector.Is there poor contact, loosing terminal, entering foreign matter, or damaging connector body?Repair the poor contact.Go to step 7 .
7 CHECK AFTER REPAIR. Perform the Clear Memory Mode. Drive for a while and read DTC.Is DTC displayed?Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Output signal value of forward brake solenoid does not match with oil pressure.

Locked to 2nd, 3rd or 4th gear.

Scheme 636

Scheme 636: WIRING DIAGRAM
Scheme 636: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 19 - (B11) No. 13: (B55) No. 21 - (B11) No. 9Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B55) No. 21 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Turn the ignition switch to ON. Read the data of "Fwd/B hydraulic pressure SW" using Subaru Select Monitor.Is "OFF" displayed?Go to step 4 .Go to step 6 .
4 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to OFF. Start the engine. Drive the vehicle on 2nd speed of manual mode at 15 km/h (9 MPH) with checking current gear position using Subaru Select Monitor. Read the data of "Fwd/B hydraulic pressure SW" using Subaru Select Monitor.Is "ON" displayed?Check for poor contact of harness in the solenoid output and oil pressure SW input, and repair the fault location.Go to step 5 .
5 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 9 - (T10) No. 10: (T4) No. 13 - (T11) No. 7Is the resistance less than 1 ohms?Replace the control valve body. Ref. to CONTROL VALVE BODY .Replace the transmission harness assembly.
6 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T10) No. 10 - Transmission groundIs the resistance 1 Mohms or more?Replace the control valve body. Ref. to CONTROL VALVE BODY .Repair the short circuit of harness between transmission connector and control valve body connector.
CAUTION
Do not drain ATF until it cools down.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Output signal circuit of forward brake solenoid is open or shorted.

Locked to 2nd, 3rd or 4th gear.

Scheme 637

Scheme 637: WIRING DIAGRAM
Scheme 637: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 19 - (B11) No. 13Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND BODY HARNESS. Measure the resistance of harness between TCM connector and body harness. Connector & terminal (B55) No. 19 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 13 - (T11) No. 7Is the resistance less than 1 ohms?Go to step 4 .Repair the open circuit of harness between transmission connector and control valve body connector.
4 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 7 - Transmission groundIs the resistance 1 Mohms or more?Repair the open circuit of harness between control valve body connector and transmission ground.Go to step 5 .
5 CHECK FORWARD BRAKE SOLENOID. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 7 - Transmission groundIs the resistance 5 - 17 ohms?Go to step 6 .Replace the control valve body. Ref. to CONTROL VALVE BODY .
6 CHECK FOR POOR CONTACT. Check the TCM connector, transmission connector and control valve body connector.Is there poor contact, loosing terminal, entering foreign matter, or damaging connector body?Repair the poor contact.Go to step 7 .
7 CHECK AFTER REPAIR. Perform the Clear Memory Mode. Drive for a while and read DTC.Is DTC displayed?Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Shift lock solenoid malfunction, open or short reverse inhibitor control circuit

  1. Gear is shifted from "N" range to "R" range during driving at 20 km/h (12 MPH) or more.
  2. Gear cannot be shifted from "N" range to "R" range though the vehicle is parked.

Scheme 638

Scheme 638: WIRING DIAGRAM
Scheme 638: WIRING DIAGRAM
StepCheckYesNo
1 CHECK SHIFT LOCK SOLENOID. Forcibly activate the body integrated unit to check the operation of shift lock solenoid. Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) . Move the shift lever without depressing the brake pedal.Does the shift lever move?Go to step 2 .Go to step 3 .
2 CHECK OUTPUT SIGNAL OF BODY INTEGRATED UNIT. Display the following items using Subaru Select Monitor. Ref. to READ CURRENT DATA . Key warning SW Shift position PSW Stop light switch With the brake pedal depressed, shift the select lever to "P" range.Do the units of measure of items displayed change?Go to step 3 .Check the circuits of the items whose values do not change.
3 CHECK HARNESS CONNECTOR BETWEEN BODY INTEGRATED UNIT AND SHIFT LOCK SOLENOID. Measure the harness resistance between the body integrated unit and chassis ground. Connector & terminal (B281) No. 5 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of harness between body integrated unit and shift lock solenoid connector.
4 CHECK HARNESS BETWEEN SHIFT LOCK SOLENOID AND CHASSIS GROUND TERMINAL. Measure the resistance of harness between shift lock solenoid connector and chassis ground. Connector & terminal (B116) No. 4 - Chassis groundIs the resistance less than 1 ohms?Go to step 5 .Repair the open circuit of the harness between shift lock solenoid connector and chassis ground.
5 CHECK SHIFT LOCK SOLENOID. Measure the resistance between the shift lock solenoid connector terminals. Connector & terminal (B116) No. 3 - No. 4Is the resistance 12 - 18 ohms?Go to step 6 .Replace the shift lock solenoid.
6 CHECK OUTPUT SIGNAL OF BODY INTEGRATED UNIT. Connect all connectors. Turn the ignition switch to ON. Set the select lever to the "D" range. Measure the voltage between body integrated unit and chassis ground. Connector & terminal (B281) No. 5 (+) - Chassis ground (-)Is the voltage 10.5 V or more?Go to step 7 .Go to step 8 .
7 CHECK OUTPUT SIGNAL OF BODY INTEGRATED UNIT. Lift up the vehicle. Start the engine. Shift the select lever to "D" range and slowly increase vehicle speed to over 20 km/h (12 MPH). NOTE: The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE . Measure the voltage between body integrated unit and chassis ground. Connector & terminal (B281) No. 5 (+) - Chassis ground (-)Is the voltage less than 1 V?Check for poor contact of the reverse inhibitor control circuit harness or connectors, and repair the fault location.Go to step 8 .
8 CHECK FOR POOR CONTACT.Is there poor contact of the reverse inhibitor control circuit?Repair the poor contact.Replace the body integrated unit. Ref. to BODY INTEGRATED UNIT .
NOTE
The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE .

DIAGNOSIS PROCEDURE

Open or short in P/N signal output circuit

  1. Engine can be started on other than "P" or "N" range.
  2. Engine can not be started on "P" or "N" range.

Scheme 639

Scheme 639: WIRING DIAGRAM
Scheme 639: WIRING DIAGRAM
StepCheckYesNo
1 CHECK DTC OF TCM.Is DTC of Transmission Range Sensor Circuit (PRNDL Input) detected?Perform the diagnosis according to DTC.Go to step 2 .
2 CHECK ECM.Is the communication between Subaru Select Monitor and ECM normal?Go to step 3 .Perform the diagnosis according to DTC of ECM.
3 CHECK FUSE (NO. 21). Turn the ignition switch to OFF. Remove the fuse.Is the fuse (No. 21) blown out?Replace the fuse (No. 21). If the replaced fuse (No. 21) has blown out easily, repair the short circuit of harness between fuse (No. 21) and inhibitor relay.Go to step 4 .
4 CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Turn the ignition switch to OFF. Disconnect the connectors from TCM, ECM and inhibitor relay. Measure the resistance of harness between TCM connector and ECM connector. Connector & terminal (B54) No. 11 - (B136) No. 35Is the resistance less than 1 ohms?Go to step 5 .Repair the open circuit of harness or poor contact of connector between TCM connector and ECM connector.
5 CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR RELAY. Measure the resistance of the harness between TCM connector and inhibitor relay. Connector & terminal (B54) No. 11 - (B498) No. 1Is the resistance less than 1 ohms?Go to step 6 .Repair the open circuit of harness or poor contact of connector between TCM connector and inhibitor relay.
6 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B54) No. 11 - Chassis groundIs the resistance 1 Mohms or more?Go to step 7 .Repair the short circuit of harness between TCM connector and chassis ground.
7 CHECK OUTPUT SIGNAL OF TCM. Connect the TCM, ECM, and inhibitor relay connector. Turn the ignition switch to ON. Shift the select lever to "P" range. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 11 (+) - Chassis ground (-)Is the voltage 1 V or less?Go to step 8 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
8 CHECK OUTPUT SIGNAL OF TCM. Set the select lever to the "D" range. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 11 (+) - Chassis ground (-)Is the voltage 8 V or more?Go to step 9 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
9 CHECK FOR POOR CONTACT.Is there any open or poor contact of connector (loosing terminal, entering foreign matter, damaging connector body)?Repair the poor contact.Check the neutral switch of ECM.

DIAGNOSIS PROCEDURE

Open or short circuit of back-up light relay output circuit

Back-up light does not illuminate in "R" range.

Scheme 640

Scheme 640: WIRING DIAGRAM
Scheme 640: WIRING DIAGRAM
StepCheckYesNo
1 CHECK DTC OF TCM.Is DTC of Transmission Range Sensor Circuit (PRNDL Input) detected?Perform the diagnosis according to DTC.Go to step 2 .
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND BACK-UP LIGHT RELAY. Turn the ignition switch to OFF. Disconnect the connector from TCM and back-up light relay. Measure the resistance of harness between TCM connector and back-up light relay connector. Connector & terminal (B54) No. 13 - (B499) No. 1Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness or poor contact of connector between TCM connector and transmission connector.
3 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B54) No. 13 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of harness between TCM connector and transmission connector.
4 CHECK OUTPUT SIGNAL OF TCM. Turn the ignition switch to ON. Shift the select lever to "P" range. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 13 (+) - Chassis ground (-)Is the voltage 8 V or more?Go to step 5 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
5 CHECK OUTPUT SIGNAL OF TCM. Set the select lever to "R" range. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 13 (+) - Chassis ground (-)Is the voltage 1 V or less?Go to step 6 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
6 CHECK INPUT VOLTAGE FOR BACK-UP LIGHT RELAY. Measure the voltage between back-up light relay and chassis ground.Is the voltage 10 - 13 V?Replace the backup light relay.Check open or short circuit of harness between fuse (No. 18) and backup light relay.

DIAGNOSIS PROCEDURE

Open or short circuit of back-up light relay output circuit

Back-up light does not illuminate in "R" range.

Input signal circuit of TCM is open or shorted.

Shifting quality malfunction

Scheme 641

Scheme 641: WIRING DIAGRAM
Scheme 641: WIRING DIAGRAM
StepCheckYesNo
1 CHECK TCM I/O SIGNAL. Check I/O signal of power supply and ground. Ref. to ELECTRICAL SPECIFICATION , Transmission Control Module (TCM) 1/O Signal.Is TCM I/O signal OK?Go to step 2 .Repair the open or short circuit for power supply and ground.
2 CHECK TCM AND TRANSMISSION HARNESS CONNECTOR. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B55) No. 16 - (B11) No. 2: (B55) No. 23 - (B12) No. 5: (B55) No. 27 - (B11) No. 7Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness between TCM connector and transmission connector.
3 CHECK TCM AND TRANSMISSION HARNESS CONNECTOR. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 16 - Chassis ground: (B55) No. 23 - Chassis ground: (B55) No. 27 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of harness between TCM connector and transmission connector.
4 CHECK TCM POWER SUPPLY OUTPUT. Connect the connector to TCM. (Transmission connector is disconnected) Turn the ignition switch to ON. Measure the voltage between transmission connector and chassis ground. Connector & terminal (B11) No. 7 (+) - Chassis ground (-)Is the voltage 10 - 13 V?Go to step 5 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
5 CHECK TURBINE SPEED SENSOR FOR TCM. Measure the voltage change between TCM connector terminals. Connector & terminal (B12) No. 5 (+) - (B11) No. 2 (-)Is the voltage 4 - 6 V?Go to step 7 .Go to step 6 .
6 CHECK HARNESS ASSEMBLY (TURBINE SPEED SENSOR GROUND). Check the installing condition of ground connecting harness (used for both of turbine speed sensor 1, rear vehicle speed sensor).Is the ground connecting harness installed to transmission body correctly, or the harness and connector terminals not damaged?Go to step 7 .When the poor installation of ground connecting harness, install it securely. Replace the transmission assembly when the harness is damaged. Ref. to AUTOMATIC TRANSMISSION ASSEMBLY .
7 CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Lift up the vehicle. Start the engine. Read the data of "Rear Wheel Speed" using Subaru Select Monitor. Ref. to READ CURRENT DATA . NOTE: The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE .Does the speedometer indication in the combination meter change according to "Rear Wheel Speed" data?Check for poor contact of the ATF temperature sensor and transmission connector harness, and repair the fault location.Replace the transmission harness.
NOTE
The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE .

DIAGNOSIS PROCEDURE

Output signal circuit of transfer solenoid is open or shorted.

  1. Tight corner braking phenomenon occurs.
  2. Drivability getting worse.

Scheme 642

Scheme 642: WIRING DIAGRAM
Scheme 642: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. Turn the ignition switch to OFF. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM and transmission connector. Connector & terminal (B54) No. 22 - Chassis ground: (B54) No. 23 - Chassis ground: (B55) No. 2 - (B11) No. 8Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between TCM connector and transmission connector.
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B54) No. 23 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness between TCM connector and transmission connector.
3 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T4) No. 8 - (T11) No. 6Is the resistance less than 1 ohms?Go to step 4 .Repair the open circuit of harness between transmission connector and control valve body connector.
4 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 6 - Transmission groundIs the resistance 1 Mohms or more?Repair the open circuit of harness between control valve body connector and transmission ground.Go to step 5 .
5 CHECK TRANSFER SOLENOID. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T11) No. 6 - Transmission groundIs the resistance 3 - 9 ohms?Go to step 6 .Replace the control valve body. Ref. to CONTROL VALVE BODY .
6 CHECK FOR POOR CONTACT. Check the TCM connector, transmission connector and control valve body connector.Is there poor contact, loosing terminal, entering foreign matter, or damaging connector body?Repair the poor contact.Go to step 7 .
7 CHECK AFTER REPAIR. Perform the Clear Memory Mode. Drive for a while and read DTC.Is DTC displayed?Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty.
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

Input signal circuit of TCM is open or shorted.

  1. Excessive shift shock
  2. Does not shift to 5th.

Scheme 643

Scheme 643: WIRING DIAGRAM
Scheme 643: WIRING DIAGRAM
StepCheckYesNo
1 CHECK TCM I/O SIGNAL. Check I/O signal of power supply and ground. Ref. to ELECTRICAL SPECIFICATION , Transmission Control Module (TCM) 1/O Signal.Is TCM I/O signal OK?Go to step 2 .Repair the open or short circuit for power supply and ground.
2 CHECK TCM AND TRANSMISSION HARNESS CONNECTOR. Disconnect the connectors from TCM and transmission. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B55) No. 16 - (B11) No. 2: (B55) No. 25 - (B12) No. 6: (B55) No. 27 - (B11) No. 7Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness between TCM connector and transmission connector.
3 CHECK TCM AND TRANSMISSION HARNESS CONNECTOR. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B55) No. 25 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of harness between TCM connector and transmission connector.
4 CHECK TCM POWER SUPPLY OUTPUT. Connect the connector to TCM. (Transmission connector is disconnected) Turn the ignition switch to ON. Measure the voltage between transmission connector and chassis ground. Connector & terminal (B11) No. 7 (+) - Chassis ground (-)Is the voltage 10 - 13 V?Go to step 5 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
5 CHECK TURBINE SPEED SENSOR 2 INPUT CIRCUIT FOR TCM. Measure the voltage between TCM connector terminals. Connector & terminal (B12) No. 6 (+) - (B11) No. 2 (-)Is the voltage 4 - 6 V?Go to step 6 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
6 CHECK INPUT SIGNAL FOR TCM. Connect all connectors. Lift up the vehicle. Start the engine. Drive at 1st of manual mode. Using Subaru Select Monitor, read the data of "AT Turbine Speed 2". Ref. to READ CURRENT DATA . NOTE: The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE .Does the speedometer indication in the combination meter change according to "AT Turbine Speed 2" data?Check for poor contact of the turbine speed sensor 2 and transmission connector harness, and repair the fault location.Go to step 7 .
7 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Turn the ignition switch to OFF. Disconnect the connector from transmission. Remove the transmission connector from bracket. Lift up the vehicle. Drain the ATF. CAUTION: Do not drain ATF until it cools down. Remove the oil pan. Disconnect the control valve body connector. Measure the resistance between transmission connector and control valve body connector. Connector & terminal (T3) No. 6 - (T10) No. 1Is the resistance less than 1 ohms?Go to step 8 .Repair the open circuit of harness between transmission connector and control valve body connector.
8 CHECK HARNESS CONNECTOR BETWEEN TRANSMISSION AND CONTROL VALVE BODY. Measure the resistance between transmission ground and control valve body connector. Connector & terminal (T10) No. 1 - Transmission groundIs the resistance 1 Mohms or more?Replace the control valve body. Ref. to CONTROL VALVE BODY .Repair the short circuit of harness between control valve body connector and transmission ground.
NOTE
The speed difference between front and rear wheels lights the ABS warning light or the VDC warning light, but this does not indicate a malfunction. If the warning light illuminates, delete the ABS or VDC memory after completing the AT control diagnosis. Ref. to CLEAR MEMORY MODE .
CAUTION
Do not drain ATF until it cools down.

DIAGNOSIS PROCEDURE

TCM EEPROM malfunction

  1. AT learning is not finished.
  2. Shock occurs when selecting N --> D, N --> R.
StepCheckYesNo
1 CHECK BATTERY. Turn the ignition switch to ON. Read the data of "Battery voltage" using Subaru Select Monitor.Is the "Battery voltage" 10 V or more?Go to step 2 .Check the battery.
2 CHECK DTC. Turn the ignition switch to OFF. Turn the ignition switch to ON after one minute.Is DTC P1724 displayed as a temporary code?Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .Current condition is normal. Check for poor contact of TCM connector or harness.

DIAGNOSIS PROCEDURE

Input signal circuit of manual mode switch is open or shorted.

  1. Manual mode can not be set.
  2. Shift indicator light displays when "N" --> "D" is selected.

Scheme 644

Scheme 644: WIRING DIAGRAM
Scheme 644: WIRING DIAGRAM
StepCheckYesNo
1 CHECK GROUND CIRCUIT OF MANUAL MODE SWITCH. Turn the ignition switch to OFF. Disconnect the connector from manual mode switch. Measure the resistance of harness between manual mode switch connector and chassis ground. Connector & terminal (B116) No. 8 - Chassis groundIs the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness between manual mode switch and chassis ground.
2 CHECK MANUAL MODE SWITCH. Measure the resistance between manual mode switch terminals. Connector & terminal (B116) No. 7 - No. 8Is the resistance 1 Mohms or more?Go to step 3 .Replace the select lever assembly. Ref. to SELECT LEVER .
3 CHECK MANUAL MODE SWITCH. Shift the select lever to manual mode. Measure the resistance between manual mode switch terminals. Connector & terminal (B116) No. 7 - No. 8Is the resistance less than 1 ohms?Go to step 4 .Replace the select lever assembly. Ref. to SELECT LEVER .
4 CHECK HARNESS CONNECTOR BETWEEN TCM AND MANUAL MODE SWITCH. Disconnect the connector from TCM. Measure the resistance of harness between TCM connector and manual mode switch connector. Connector & terminal (B116) No. 7 - (B54) No. 6Is the resistance less than 1 ohms?Go to step 5 .Repair the open circuit of harness or poor contact of connector between manual mode switch connector and TCM connector.
5 CHECK HARNESS CONNECTOR BETWEEN TCM AND MANUAL MODE SWITCH. Disconnect the connector from TCM. Measure the resistance of harness between manual mode switch connector and chassis ground. Connector & terminal (B116) No. 7 - Chassis groundIs the resistance 1 Mohms or more?Go to step 6 .Repair the short circuit of harness between manual mode switch connector and TCM connector.
6 CHECK INPUT SIGNAL FOR TCM. Connect the connector to TCM and manual mode switch. Turn the ignition switch to ON. Shift the select lever to the normal mode. Measure the voltage of signal to TCM. Connector & terminal (B54) No. 6 (+) - Chassis ground (-)Is the voltage 10 V or more?Go to step 7 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
7 CHECK FOR POOR CONTACT.Is there poor contact of the manual mode switch circuit?Repair the poor contact.Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .

DIAGNOSIS PROCEDURE

Front brake oil pressure switch malfunction

Excessive shift shock

Note. Refer to DTC P0751 for diagnostic procedure. Ref. to DTC P0751 SHIFT SOLENOID "A" PERFORMANCE OR STUCK OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

Forward brake oil pressure switch malfunction.

Excessive shift shock

Note. Refer to DTC P0771 for diagnostic procedure. Ref. to DTC P0771 SHIFT SOLENOID "E" PERFORMANCE OR STUCK OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

Input clutch oil pressure switch is malfunction.

Excessive shift shock

Note. Refer to DTC P0756 for diagnostic procedure. Ref. to DTC P0756 SHIFT SOLENOID "B" PERFORMANCE OR STUCK OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

Direct clutch oil pressure switch malfunction.

Excessive shift shock

Note. Refer to DTC P0766 for diagnostic procedure. Ref. to DTC P0766 SHIFT SOLENOID "D" PERFORMANCE OR STUCK OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

High & low reverse clutch oil pressure switch malfunction.

Excessive shift shock

Note. Refer to DTC P0761 for diagnostic procedure. Ref. to DTC P0761 SHIFT SOLENOID "C" PERFORMANCE OR STUCK OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

  1. Output signal circuit of shift indicator is open or shorted.
  2. Combination meter malfunction
  1. Shift indicator does not display or remains displayed.
  2. Shift indicator display does not change.

Scheme 645

Scheme 645: WIRING DIAGRAM
Scheme 645: WIRING DIAGRAM
StepCheckYesNo
1 CHECK TCM. Check the DTC relating the TCM using the Subaru Select Monitor.Is DTC displayed?Perform the diagnosis according to DTC.Go to step 2 .
2 CHECK COMBINATION METER. Check the DTC of combination meter.Is DTC displayed?Perform the diagnosis according to DTC.Go to step 3 .
3 CHECK TCM. Turn the ignition switch to OFF. Connect the Subaru Select Monitor to data link connector. Turn the ignition switch to ON. Run the Subaru Select Monitor. Shift the select lever to manual mode. Read the data of "Gear Position" using Subaru Select Monitor.Is the gear position "1"?Go to step 4 .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .
4 CHECK TCM. Shift up the select lever. Read the data of "Gear Position" using Subaru Select Monitor.Is the gear position "2"?Replace the combination meter assembly. Ref. to COMBINATION METER .Replace the TCM. Ref. to TRANSMISSION CONTROL MODULE (TCM) .

DIAGNOSIS PROCEDURE

INSPECTION

SymptomsProblem parts
Shifting vehicle speed is low on "D" range.Vehicle speed sensor 1 and vehicle speed sensor 2 Accelerator pedal position sensor Throttle position sensor ATF temperature sensor CAN communication signal
Shifting vehicle speed is high on "D" range.Vehicle speed sensor 1 and vehicle speed sensor 2 Accelerator pedal position sensor Throttle position sensor CAN communication signal Brake switch signal ATF temperature sensor
Excessive shifting shock. ("N" --> "D" range)Engine idle speed Engine speed signal Accelerator pedal position sensor Throttle position sensor Control cable adjustment ATF temperature sensor Oil pressure switch 1 and front brake solenoid valve CAN communication signal Fluid level and condition TCM power supply
Excessive shift shock on 1st of "D" range --> 2nd of "D" range or "1st of manual mode" --> "2nd of manual mode".Accelerator pedal position sensor Throttle position sensor Control cable adjustment Oil pressure switch 4 and direct clutch solenoid valve CAN communication signal Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Vehicle speed sensor 1 and vehicle speed sensor 2 Fluid level and condition
Excessive shift shock on 2nd of "D" range --> 3rd of "D" range or "2nd gear of manual mode" --> "3rd of manual mode".Accelerator pedal position sensor Throttle position sensor Control cable adjustment Oil pressure switch 5 and high & low reverse clutch solenoid valve CAN communication signal Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Vehicle speed sensor 1 and vehicle speed sensor 2 Fluid level and condition
Excessive shift shock on 3rd of "D" range --> 4th of "D" range or "3rd of manual mode" --> "4th of manual mode".Accelerator pedal position sensor Throttle position sensor Control cable adjustment Oil pressure switch 3 and input clutch solenoid valve CAN communication signal Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Vehicle speed sensor 1 and vehicle speed sensor 2 Fluid level and condition
Excessive shift shock on 4th of "D" range --> 5th of "D" range or "4th of manual mode" --> "5th of manual mode".Accelerator pedal position sensor Throttle position sensor Control cable adjustment Oil pressure switch 1 and front brake solenoid valve CAN communication signal Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Vehicle speed sensor 1 and vehicle speed sensor 2 Fluid level and condition
Excessive shock at kick down.Accelerator pedal position sensor Throttle position sensor Control cable adjustment CAN communication signal Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Vehicle speed sensor 1 and vehicle speed sensor 2 Fluid level and condition
Excessive shock at shift up.Accelerator pedal position sensor Throttle position sensor Control cable adjustment Engine speed signal CAN communication signal Turbine speed sensor 1 and turbine speed sensor 2 Vehicle speed sensor 1 and vehicle speed sensor 2 Fluid level and condition
Excessive shock at lock up.Accelerator pedal position sensor Throttle position sensor Control cable adjustment Engine speed signal CAN communication signal Turbine speed sensor 1 and turbine speed sensor 2 Lock up solenoid valve Vehicle speed sensor 1 and vehicle speed sensor 2 Fluid level and condition
Excessive shock at engine brake.Accelerator pedal position sensor Throttle position sensor Control cable adjustment CAN communication signal Fluid level and condition Line pressure Forward brake solenoid valve
Judder occurs at lock up.Fluid level and condition Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Vehicle speed sensor 1 and vehicle speed sensor 2 Accelerator pedal position sensor Throttle position sensor Lock up solenoid valve ATF temperature sensor
Noise at "R", "N" and "D" range.Fluid level and condition Engine speed signal ATF temperature sensor
Hold at "D" range or 1st on manual mode.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Direct clutch solenoid valve Line pressure Up switch signal CAN communication signal Accelerator pedal position sensor
Hold at "D" range or 2nd on manual mode.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Forward brake solenoid valve Line pressure Up switch signal Down switch signal CAN communication signal Accelerator pedal position sensor
Hold at "D" range or 3rd on manual mode.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Line pressure Up switch signal Down switch signal CAN communication signal Accelerator pedal position sensor
Hold at "D" range or 4th on manual mode.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 3 and input clutch solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Oil pressure switch 5 and high & low reverse clutch solenoid valve Forward brake solenoid valve Front brake solenoid valve Line pressure Up switch signal Down switch signal CAN communication signal Accelerator pedal position sensor TCM power supply
Hold at "D" range or 5th on manual mode.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 1 and front brake solenoid valve Line pressure Down switch signal CAN communication signal Accelerator pedal position sensor
Gear does not shift 1st of "D" range --> 2nd of "D" range or "1st of manual mode" --> "2nd of manual mode".Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 4 and direct clutch solenoid valve Line pressure Up switch signal CAN communication signal Accelerator pedal position sensor
Gear does not shift 2nd of "D" range --> 3rd of "D" range or "2nd of manual mode" --> "3rd of manual mode".Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 5 and high & low reverse clutch solenoid valve Line pressure Up switch signal CAN communication signal Accelerator pedal position sensor
Gear does not shift 3rd of "D" range --> 4th of "D" range or "3rd of manual mode" --> "4th of manual mode".Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 3 and input clutch solenoid valve Oil pressure switch 1 and front brake solenoid valve Line pressure Up switch signal CAN communication signal Accelerator pedal position sensor
Gear does not shift 4th of "D" range --> 5th of "D" range or "4th of manual mode" --> "5th of manual mode".Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 1 and front brake solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Turbine speed sensor 1 and turbine speed sensor 2 ATF temperature sensor Line pressure Up switch signal CAN communication signal Accelerator pedal position sensor
Gear does not shift down to 4th on "D" range or manual mode.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 1 and front brake solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Line pressure Down switch signal CAN communication signal Accelerator pedal position sensor
Gear does not shift down to 3rd on "D" range or manual mode.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 3 and input clutch solenoid valve Oil pressure switch 1 and front brake solenoid valve Line pressure Down switch signal CAN communication signal Accelerator pedal position sensor TCM power supply
Gear does not shift down to 2nd on "D" range or manual mode.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 5 and high & low reverse clutch solenoid Line pressure Down switch signal CAN communication signal Accelerator pedal position sensor
Gear does not shift down to 1st on "D" range or manual mode.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 4 and direct clutch solenoid valve Line pressure Down switch signal CAN communication signal Accelerator pedal position sensor
No lock-up occurs.Fluid level and condition Line pressure Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Lock up solenoid valve CAN communication signal ATF temperature sensor Accelerator pedal position sensor Brake switch signal Range signal
No shifting shock occurred when shifting 1st of "D" range --> 2nd of "D" range or "1st of manual mode" --> "2nd of manual mode". Or clutch slipping occurred.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 4 and direct clutch solenoid valve Line pressure CAN communication signal
No shifting shock occurred when shifting 2nd of "D" range --> 3rd of "D" range or "2nd of manual mode" --> "3rd of manual mode". Or clutch slipping occurred.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 5 and high & low reverse clutch solenoid valve Line pressure CAN communication signal
No shifting shock occurred when shifting 3rd of "D" range --> 4th of "D" range or "3rd of manual mode" --> "4th of manual mode". Or clutch slipping occurred.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 3 and input clutch solenoid valve Oil pressure switch 1 and front brake solenoid valve Line pressure CAN communication signal
No shifting shock occurred when shifting 4th of "D" range --> 5th of "D" range or "4th of manual mode" --> "5th of manual mode". Or clutch slipping occurred.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 1 and front brake solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Line pressure Accelerator pedal position sensor Throttle position sensor
Engine skids when shifting 5th of "D" range --> 4th of "D" range or "5th of manual mode" --> "4th of manual mode". Or slipping occurred.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 1 and front brake solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Line pressure Accelerator pedal position sensor Throttle position sensor
Engine skids when shifting 4th of "D" range --> 3rd of "D" range or "4th of manual mode" --> "3rd of manual mode". Or slipping occurred.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 3 and input clutch solenoid valve Oil pressure switch 1 and front brake solenoid valve Line pressure Accelerator pedal position sensor Throttle position sensor
Engine skids when shifting 3rd of "D" range --> 2nd of "D" range or "3rd of manual mode" --> "2nd of manual mode". Or slipping occurred.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 5 and high & low reverse clutch solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Line pressure Accelerator pedal position sensor Throttle position sensor
Engine skids when shifting 2nd of "D" range --> 1st of "D" range or "2nd of manual mode" --> "1st of manual mode". Or slipping occurred.Fluid level and condition Vehicle speed sensor 1 and vehicle speed sensor 2 Oil pressure switch 4 and direct clutch solenoid valve Line pressure Accelerator pedal position sensor Throttle position sensor
Engine brake does not function at 5th --> 4th of manual mode.Inhibitor switch Fluid level and condition Control cable adjustment Manual mode switch Oil pressure switch 1 Down switch signal
Engine brake does not function at 4th --> 3rd of manual mode.Inhibitor switch Fluid level and condition Control cable adjustment Manual mode switch Oil pressure switch 1 and oil pressure switch 3 Down switch signal
Engine brake does not function at 3rd --> 2nd of manual mode.Inhibitor switch Fluid level and condition Control cable adjustment Manual mode switch Oil pressure switch 5 Forward brake solenoid valve
Engine brake does not function at 2nd --> 1st of manual mode.Inhibitor switch Fluid level and condition Control cable adjustment Manual mode switch Oil pressure switch 4 Forward brake solenoid valve
Excessive acceleration failure on "D" range.Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Inhibitor switch Control cable adjustment Vehicle speed sensor 1 and vehicle speed sensor 2
Excessive acceleration failure in "R" range.Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor Oil pressure switch 5 and high & low reverse clutch solenoid valve CAN communication signal Inhibitor switch Control cable adjustment Vehicle speed sensor 1 and vehicle speed sensor 2
Engine skids when start driving (1st) the vehicle. Or slipping occurred.Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal
Engine skids when driving at 2nd. Or slipping occurred.Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Oil pressure switch 4 and direct clutch solenoid valve
Engine skids when driving at 3rd. Or slipping occurred.Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Oil pressure switch 5 and high & low reverse clutch solenoid valve
Engine skids when driving at 4th. Or slipping occurred.Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Oil pressure switch 3 and input clutch solenoid valve
Engine skids when driving at 5th. Or slipping occurred.Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Oil pressure switch 1 and front brake solenoid valve
Slip at lock up.Fluid level and condition Line pressure Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Lock up solenoid valve CAN communication signal
Maximum vehicle speed is low.Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Direct clutch solenoid valve Vehicle speed sensor 1 and vehicle speed sensor 2
There is no creep.Fluid level and condition Engine speed signal CAN communication signal Oil pressure switch 4 and direct clutch solenoid valve Line pressure
Excessive large creep.Engine speed signal CAN communication signal Oil pressure switch 4
Vehicle cannot be parking condition on "P" range. Parking condition is not released though shifting to other ranges.Inhibitor switch Control cable adjustment
Vehicle can drive on "P" range.Inhibitor switch Fluid level and condition Control cable adjustment Line pressure
Vehicle can drive on "N" range.Inhibitor switch Fluid level and condition Control cable adjustment Line pressure
Vehicle cannot drive at any range.Fluid level and condition Line pressure Inhibitor switch Control cable adjustment Loosing or damaging of propeller shaft. Loosing or damaging of drive shaft.
Vehicle cannot drive on "D" range.Fluid level and condition Line pressure Inhibitor switch Control cable adjustment Loosing or damaging of propeller shaft. Loosing or damaging of drive shaft.
Vehicle cannot drive on "R" range.Fluid level and condition Line pressure Inhibitor switch Control cable adjustment Loosing or damaging of propeller shaft. Loosing or damaging of drive shaft.
Engine cannot start on "N" or "P" range.Starter Control cable adjustment Inhibitor switch CAN communication line TCM
Engine starts other than "N" or "P" range.Starter Control cable adjustment Inhibitor switch TCM
Engine stalls.Fluid level and condition Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Lock up solenoid valve Line pressure
Engine stalls when shifting to "N" --> "D" and "R" range.Fluid level and condition Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Lock up solenoid valve Line pressure

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