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Continuously Variable Transaxle (Cvt) (Diagnostics): Wiring Subaru Outback BR рестайлинг

Automatic Trans 17 illustrations ~326 words

WIRING DIAGRAM

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 609

Scheme 609: WIRING DIAGRAM
Scheme 609: WIRING DIAGRAM
StepCheckYesNo
1 CHECK IGNITION SWITCH.Is the ignition switch ON?Go to step 2 .Turn the ignition switch to ON, and select the transmission mode using the Subaru Select Monitor.
2 CHECK BATTERY. Turn the ignition switch to OFF. Measure the battery voltage.Is the voltage 11 V or more?Go to step 3 .Charge or replace the battery.
3 CHECK BATTERY TERMINAL.Is there poor contact at battery terminal?Repair or tighten the battery terminal.Go to step 4 .
4 CHECK INSTALLATION OF TCM CONNECTOR. Turn the ignition switch to OFF.Is the TCM connector inserted into the TCM until the clamp locks?Go to step 5 .Insert the TCM connector to TCM.
5 CHECK LAN SYSTEM. Perform the diagnosis for LAN system. Refer to BASIC DIAGNOSTIC PROCEDURE .Is there any fault in LAN system?Perform the diagnosis according to DTC for LAN system. Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .Go to step 6 .
6 CHECK SUBARU SELECT MONITOR COMMUNICATION. Turn the ignition switch to ON. Check whether communication to transmission system can be executed normally.Is the system name displayed on Subaru Select Monitor?Check DTC of TCM. Refer to READ DIAGNOSTIC TROUBLE CODE (DTC) .Go to step 7 .
7 CHECK POWER SUPPLY CIRCUIT. Turn the ignition switch to ON. (engine OFF) Measure the ignition power supply voltage between TCM connector and chassis ground. Connector & terminal (B55) No. 1 (+) - Chassis ground (-): (B55) No. 2 (+) - Chassis ground (-): (B55) No. 11 (+) - Chassis ground (-): (B55) No. 21 (+) - Chassis ground (-): (B55) No. 22 (+) - Chassis ground (-)Is the voltage 10 - 13 V?Go to step 8 .Repair the open circuit of harness between TCM and battery.
8 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Turn the ignition switch to OFF. Disconnect the connector from TCM. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B54) No. 1 - Chassis groundIs the resistance less than 10 ohms?Go to step 9 .Repair the open circuit of the TCM ground circuit and poor contact of connector.
9 CHECK POOR CONTACT OF CONNECTOR.Is there poor contact of control module power supply, ground circuit and data link connector?Repair the connector.Check the TCM.

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 610

Scheme 610: WIRING DIAGRAM
Scheme 610: WIRING DIAGRAM
StepCheckYesNo
1 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to ON. Move the select lever to each range, and read the data of «P range», «R Range Signal», «N range» and «D Range Signal» using the Subaru Select Monitor.Is display "OFF" for the range other than corresponding range?Go to step 5 .Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 5 - Chassis ground: (B54) No. 18 - Chassis ground: (B54) No. 9 - Chassis ground: (B54) No. 22 - Chassis groundIs each resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of body harness.
3 CHECK HARNESS. Disconnect the inhibitor switch connector. Measure the resistance between transmission connector and chassis ground. Connector & terminal (T3) No. 1 - Chassis ground: (T3) No. 2 - Chassis ground: (T3) No. 3 - Chassis ground: (T3) No. 4 - Chassis groundIs each resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of transmission harness.
4 CHECK INHIBITOR SWITCH. Move the select lever to each range, and measure the resistance between inhibitor switch connector terminals. Connector & terminal (T7) No. 2 - (T7) No. 1: (T7) No. 5 - (T7) No. 1: (T7) No. 3 - (T7) No. 1: (T7) No. 4 - (T7) No. 1Is the resistance other than corresponding range 1 Mohms or more?Go to step 5 .Replace the inhibitor switch. Refer to INHIBITOR SWITCH .
5 CHECK FOR POOR CONTACT.Is there poor contact between TCM, inhibitor switch, transmission ground?Repair the poor contact.Check the TCM.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 611

Scheme 611: WIRING DIAGRAM
Scheme 611: WIRING DIAGRAM
StepCheckYesNo
1 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to ON. Move the select lever to each range, and read the data of «P range», «R Range Signal», «N range» and «D Range Signal» using the Subaru Select Monitor.Is the display of the corresponding range "ON"?Go to step 7 .Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 5 - (B12) No. 1: (B54) No. 18 - (B12) No. 2: (B54) No. 9 - (B12) No. 3: (B54) No. 22 - (B12) No. 4Is each resistance less than 1 ohms?Go to step 3 .Repair the open circuit of body harness.
3 CHECK HARNESS. Measure the resistance of harness between inhibitor switch connector and transmission ground. Connector & terminal (T7) No. 1 - Transmission groundIs the resistance less than 1 ohms?Go to step 4 .Repair the open circuit of harness.
4 CHECK HARNESS. Disconnect the inhibitor switch connector. Measure the resistance between transmission connector and inhibitor switch connector. Connector & terminal (T3) No. 1 - (T7) No. 2: (T3) No. 2 - (T7) No. 5: (T3) No. 3 - (T7) No. 3: (T3) No. 4 - (T7) No. 4Is each resistance less than 1 ohms?Go to step 5 .Repair the open circuit of transmission harness.
5 CHECK INHIBITOR SWITCH. Move the select lever to each range, and measure the resistance between inhibitor switch connector terminals. Connector & terminal (T7) No. 2 - (T7) No. 1: (T7) No. 5 - (T7) No. 1: (T7) No. 3 - (T7) No. 1: (T7) No. 4 - (T7) No. 1Is the resistance of the corresponding range less than 1 Mohms?Go to step 6 .Replace the inhibitor switch. Refer to INHIBITOR SWITCH .
6 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between each connector and chassis ground. Connector & terminal Transmission connector (B12 side) (B12) No. 1 (+) - Chassis ground (-): (B12) No. 2 (+) - Chassis ground (-): (B12) No. 3 (+) - Chassis ground (-): (B12) No. 4 (+) - Chassis ground (-): Transmission connector (T7 side) (T7) No. 2 (+) - Chassis ground (-): (T7) No. 5 (+) - Chassis ground (-): (T7) No. 3 (+) - Chassis ground (-): (T7) No. 4 (+) - Chassis ground (-)Is each voltage less than 1 V?Go to step 7 .Repair the harness which outputs 1 V or more.
7 CHECK FOR POOR CONTACT.Is there poor contact between TCM, inhibitor switch, transmission ground?Repair the poor contact.Check the TCM.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 612

Scheme 612: WIRING DIAGRAM
Scheme 612: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B54) No. 3 - Chassis ground: (B54) No. 16 - Chassis groundIs the resistance 1 Mohms or more?Go to step 2 .Repair the short circuit of harness.
2 CHECK HARNESS. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 5 - Transmission body: (T4) No. 9 - Transmission bodyIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness.
3 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 4 .Replace the transmission harness.
4 CHECK ATF TEMPERATURE SENSOR. Measure the resistance between transmission connector terminals. Connector & terminal (T4) No. 5 - No. 9Is resistance as follows? Fluid temperature 0°C --> Approx. 6.0 kohms Fluid temperature 20°C --> Approx. 2.5 kohms Fluid temperature 80°C --> Approx. 330 ohmsCheck the TCM.Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between TCM connectors. Connector & terminal (B54) No. 3 (+) - (B54) No. 16 (-)Is the voltage 5 V or more?Repair the short circuit of harness.Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 3 - (B11) No. 5: (B54) No. 16 - (B11) No. 9Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of body harness.
3 CHECK ATF TEMPERATURE SENSOR. Turn the ignition switch to OFF. Disconnect the transmission connector. Measure the resistance between transmission connector terminals. Connector & terminal (T4) No. 5 - No. 9Is the resistance 1 Mohms or more?Repair the open circuit of transmission harness.Go to step 4 .
4 CHECK ATF TEMPERATURE SENSOR. Turn the ignition switch to OFF. Connect the connectors to TCM and transmission. Start the engine. Warm up until the ATF temperature exceeds 50°C (122°F). Turn the ignition switch to OFF. Disconnect the transmission connector. Measure the resistance between transmission connector terminals. Connector & terminal (T4) No. 5 - No. 9Is the resistance 650 - 990 ohms?Go to step 5 .Go to step 7 .
5 CHECK ATF TEMPERATURE SENSOR. Measure the resistance between transmission connector terminals. Connector & terminal (T4) No. 5 - No. 9Does the resistance value increase gradually while the ATF temperature decreases?Go to step 6 .Replace the transmission harness.
6 CHECK INPUT SIGNAL FOR TCM. Connect the connector to transmission. Turn the ignition switch to ON. (Do not start engine.) Read the data of «ATF Temp.» using the Subaru Select Monitor.Does the ATF temperature gradually decrease?Check for poor contact of the ATF temperature sensor and transmission connector harness, and repair the defective part.Go to step 7 .
7 CHECK FOR POOR CONTACT.Is there poor contact of ATF temperature sensor circuit?Repair the poor contact.Check the TCM.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 613

Scheme 613: WIRING DIAGRAM
Scheme 613: WIRING DIAGRAM
StepCheckYesNo
1 CHECK FUSE. Turn the ignition switch to OFF. Remove the M/B fuse (No. 38).Is the fuse OK?Go to step 2 .Replace the fuse. If the fuse blows out easily, repair the short circuit of harness.
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 1 - (B12) No. 7: (B54) No. 20 - (B12) No. 9: (M/B No. 38) No. 2 - (B12) No. 6Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness.
3 CHECK HARNESS. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 20 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of harness.
4 CHECK TRANSMISSION HARNESS. Connect the TCM connector. Turn the ignition switch to ON. Measure the voltage between transmission connector terminals. Connector & terminal (B12) No. 6 (+) - (B12) No. 7 (-)Is the voltage 10 - 13 V?Go to step 5 .Repair the open circuit of harness or poor contact of connector.
5 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to OFF. Connect the transmission connector. Start the engine. Read the data of «Turbine Revolution Speed» using the Subaru Select Monitor.Does the value of «Turbine Revolution Speed» change according to the engine speed?Current condition is normal. Repair the poor contacts of harnesses of turbine speed sensor and transmission connector.Go to step 6 .
6 CHECK TRANSMISSION HARNESS. Turn the ignition switch to OFF. Disconnect the transmission connector. Lift up the vehicle. Disconnect the turbine speed sensor connector. Measure the resistance between transmission connector and turbine speed sensor connector. Connector & terminal (T3) No. 6 - (AT5) No. 1: (T3) No. 7 - (AT5) No. 3: (T3) No. 9 - (AT5) No. 2Is the resistance less than 1 ohms?Replace the turbine speed sensor. Refer to TURBINE SPEED SENSOR .Replace the transmission harness.

DIAGNOSTIC PROCEDURE

Stop light system. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 614

Scheme 614: WIRING DIAGRAM
Scheme 614: WIRING DIAGRAM
StepCheckYesNo
1 CHECK FUSE (NO. 8). Turn the ignition switch to OFF. Remove the fuse (No. 8).Is the fuse (No. 8) blown out?Replace the fuse (No. 8). If the new fuse (No. 8) has blown out easily, repair the short circuit of harness between fuse (No. 8) and stop light switch.Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and stop light switch connector. Measure the resistance between TCM connector and stop light switch connector. Connector & terminal (B55) No. 13 - (B65) No. 3Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness.
3 CHECK HARNESS. Measure the resistance between the stop light switch connector and fuse (No. 8). Connector & terminal (B65) No. 2 - fuse (No. 8)Is the resistance less than 1 ohms?Go to step 4 .Repair the open circuit of harness.
4 CHECK INPUT SIGNAL FOR TCM. Install the fuse (No. 8). Connect the TCM and stop light switch connector. Depress the brake pedal. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B55) No. 13 (+) - Chassis ground (-)Is the voltage 10 V or more?Go to step 5 .Replace the stop light switch. Refer to STOP LIGHT SWITCH .
5 CHECK INPUT SIGNAL FOR TCM. With brake pedal depressed, read the data of «Stop Light Switch» using Subaru Select Monitor.Is "ON" displayed?Current condition is normal. Check for poor contact in connectors or harnesses, and repair the defective part.Go to step 6 .
6 CHECK FOR POOR CONTACT.Is there poor contact of input signal of stop light switch?Repair the poor contact.Check the TCM.

DIAGNOSTIC PROCEDURE

Stop light system. See appropriate SYSTEM WIRING DIAGRAM article.

StepCheckYesNo
1 CHECK STOP LIGHT SWITCH. Turn the ignition switch to OFF. Disconnect the stop light switch connector. Measure the resistance of harness between stop light switch connectors. Connector & terminal (B65) No. 2 - No. 3Is the resistance 1 Mohms or more?Go to step 2 .Replace the stop light switch. Refer to STOP LIGHT SWITCH .
2 CHECK HARNESS. Disconnect the TCM connector. Turn the ignition switch to ON. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B55) No. 13 (+) - Chassis ground (-)Is the voltage 10 V or more?Repair the short circuit of harness.Go to step 3 .
3 CHECK INPUT SIGNAL FOR TCM. Connect the TCM and stop light switch connector. Turn the ignition switch to ON. Read the data of «Stop Light Switch» using Subaru Select Monitor.Is "OFF" displayed?Current condition is normal. Check for poor contact in connectors or harnesses, and repair the defective part.Go to step 4 .
4 CHECK FOR POOR CONTACT.Is there poor contact of input signal of stop light switch?Repair the poor contact.Check the TCM.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 615

Scheme 615: WIRING DIAGRAM
Scheme 615: WIRING DIAGRAM
StepCheckYesNo
1 CHECK INPUT SIGNAL FOR TCM. Start the engine. Warm up until the ATF temperature reaches to 40 - 70°C (104 - 158°F). Shift the select lever to "P" range. Stabilize the engine speed at idle. Read the data of «Actual secondary pressure» using Subaru Select Monitor.Is the «Actual secondary pressure» 0.5 - 1.5 MPa?Check for poor contact of connector.Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 2 - (B12) No. 12: (B54) No. 15 - (B12) No. 10: (B54) No. 17 - (B12) No. 11Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness.
3 CHECK HARNESS. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 2 - Chassis ground: (B54) No. 17 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of harness.
4 CHECK TRANSMISSION HARNESS. Disconnect the secondary pressure sensor connector. Measure the resistance between transmission connector and secondary pressure sensor connector. Connector & terminal (T3) No. 10 - (AT6) No. 3: (T3) No. 11 - (AT6) No. 2: (T3) No. 12 - (AT6) No. 1Is the resistance less than 1 ohms?Go to step 5 .Repair the open circuit of harness.
5 CHECK TRANSMISSION HARNESS. Measure the resistance between transmission connector and chassis ground. Connector & terminal (T3) No. 11 - Chassis ground: (T3) No. 12 - Chassis groundIs the resistance 1 Mohms or more?Go to step 6 .Repair the short circuit of harness.
6 CHECK SENSOR POWER SUPPLY. Connect the connectors of TCM and transmission. Turn the ignition switch to ON. Measure the voltage between secondary pressure sensor connector terminals. Connector & terminal (AT6) No. 1 (+) - (AT6) No. 3 (-)Is the voltage 4.5 V or more?Replace the secondary pressure sensor. Refer to SECONDARY PRESSURE SENSOR .Check for poor contact of the connector, and repair the defective part.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

StepCheckYesNo
1 CHECK INPUT SIGNAL FOR TCM. Start the engine. Warm up until the ATF temperature reaches to 40 - 70°C (104 - 158°F). Shift the select lever to "P" range. Stabilize the engine speed at idle. Read the data of «Actual secondary pressure» using Subaru Select Monitor.Is the «Actual secondary pressure» 0.5 - 1.5 MPa?Check for poor contact of connector.Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Turn the ignition switch to ON. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 2 (+) - Chassis ground (-): (B54) No. 17 (+) - Chassis ground (-)Is the voltage approx. 0 V?Go to step 3 .Repair the short circuit of harness.
3 CHECK HARNESS. Turn the ignition switch to OFF. Measure the resistance between TCM connector terminals. Connector & terminal (B54) No. 2 - (B54) No. 17Is the resistance less than 1 ohms?Repair the short circuit of harness.Go to step 4 .
4 CHECK TRANSMISSION HARNESS. Disconnect the secondary pressure sensor connector. Turn the ignition switch to ON. Measure the voltage between transmission connector and chassis ground. Connector & terminal (T3) No. 11 (+) - Chassis ground (-): (T3) No. 12 (+) - Chassis ground (-)Is the voltage approx. 0 V?Go to step 5 .Repair the short circuit of harness.
5 CHECK TRANSMISSION HARNESS. Turn the ignition switch to OFF. Measure the resistance between transmission connector terminals. Connector & terminal (T3) No. 11 - (T3) No. 12Is the resistance less than 1 ohms?Repair the short circuit of harness.Go to step 6 .
6 CHECK SENSOR POWER SUPPLY. Connect the connectors of TCM and transmission. Turn the ignition switch to ON. Measure the voltage between secondary pressure sensor connector terminals. Connector & terminal (AT6) No. 1 (+) - (AT6) No. 3 (-)Is the voltage 4.5 V or more?Replace the secondary pressure sensor. Refer to SECONDARY PRESSURE SENSOR .Check for poor contact of the connector, and repair the defective part.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 616

Scheme 616: WIRING DIAGRAM
Scheme 616: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS. Disconnect the TCM and self shut relay connectors. Measure the resistance between TCM connector and self shut relay connector. Connector & terminal Without push button start (B55) No. 20 - (B494) No. 1: (B55) No. 2 - (B494) No. 3: (B55) No. 11 - (B494) No. 3: (B55) No. 22 - (B494) No. 3: With push button start (B55) No. 20 - (B225) No. 8: (B55) No. 2 - (B225) No. 7: (B55) No. 11 - (B225) No. 7: (B55) No. 22 - (B225) No. 7Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness.
2 CHECK HARNESS. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B55) No. 20 - Chassis ground: (B55) No. 2 - Chassis ground: (B55) No. 11 - Chassis ground: (B55) No. 22 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness.
3 CHECK RELAY POWER SUPPLY. Measure the voltage between self shut relay connector and chassis ground. Connector & terminal Without push button start (B494) No. 2 (+) - Chassis ground (-): (B494) No. 4 (+) - Chassis ground (-): With push button start (B225) No. 9 (+) - Chassis ground (-): (B225) No. 6 (+) - Chassis ground (-)Is the voltage 10 V or more?Go to step 4 .Repair the open or short circuit of harness.
4 CHECK SELF SHUT RELAY. Measure the resistance between self shut relay terminals. Connector & terminal Without push button start (B494) No. 1 - (B494) No. 2: With push button start (B225) No. 8 - (B225) No. 9Is the resistance 110 - 140 ohms?Go to step 5 .Replace the self shut relay.
5 CHECK SELF SHUT RELAY. Measure the resistance between self shut relay terminals. Connector & terminal Without push button start (B494) No. 3 - (B494) No. 4: With push button start (B225) No. 6 - (B225) No. 7Is the resistance 1 Mohms or more?Go to step 6 .Replace the self shut relay.
6 CHECK INPUT SIGNAL FOR TCM. Connect the connectors of TCM and self shut relay. Read the data of «Control module voltage» using Subaru Select Monitor.Is the «Control module voltage» 10 V or more?Current condition is normal. Check for poor contact in connectors or harnesses, and repair the defective part.Go to step 7 .
7 CHECK FOR POOR CONTACT.Is there poor contact of the self shut relay circuit?Repair the poor contact.Check the TCM.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 617

Scheme 617: WIRING DIAGRAM
Scheme 617: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the manual mode switch connector. Measure the resistance 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.
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. Refer 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. Refer to SELECT LEVER .
4 CHECK HARNESS. Disconnect the TCM connector. Measure the resistance between TCM connector and manual mode switch connector. Connector & terminal (B55) No. 4 - (B116) No. 7Is the resistance less than 1 ohms?Go to step 5 .Repair the open circuit of harness or poor contact of connector.
5 CHECK HARNESS. Measure the resistance 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.
6 CHECK INPUT SIGNAL FOR TCM. Connect the TCM and manual mode switch connector. Turn the ignition switch to ON. Set the select lever to "D" range. Read the data of «Tiptronic Mode Switch» using Subaru Select Monitor.Does the value of «Tiptronic Mode Switch» change to "ON" with select lever in manual mode, and "OFF" with select lever in other than manual mode?Current condition is normal.Go to step 7 .
7 CHECK FOR POOR CONTACT.Is there poor contact of the manual mode switch circuit?Repair the poor contact.Check the TCM.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 618

Scheme 618: WIRING DIAGRAM
Scheme 618: WIRING DIAGRAM
StepCheckYesNo
1 CHECK INPUT SIGNAL FOR TCM. After driving with warm up condition, park the vehicle while depressing the brake pedal at "N" range. Read the data of «Sec. Sol. Set Current» and «Sec. Sol. Actual Current» using Subaru Select Monitor.Does the value of «Sec. Sol. Set Current» and «Sec. Sol. Actual Current» almost correspond?Check for poor contact of connector.Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 12 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness.
3 CHECK SECONDARY SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 6 - Transmission bodyIs the resistance approx. 7 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 4 .
4 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 5 .Replace the transmission harness.
5 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 6 - Transmission bodyIs the resistance 1 Mohms or more?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

StepCheckYesNo
1 CHECK INPUT SIGNAL FOR TCM. After driving with warm up condition, park the vehicle while depressing the brake pedal at "N" range. Read the data of «Sec. Sol. Set Current» and «Sec. Sol. Actual Current» using Subaru Select Monitor.Does the value of «Sec. Sol. Set Current» and «Sec. Sol. Actual Current» almost correspond?Check for poor contact of connector.Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 12 - (B11) No. 6Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness.
3 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 12 (+) - Chassis ground (-)Is the voltage approx. 0 V?Go to step 4 .Repair the short circuit of harness.
4 CHECK SECONDARY SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 6 - Transmission bodyIs the resistance approx. 7 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 5 .
5 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 6 .Replace the transmission harness.
6 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Turn the ignition switch to ON. Measure the voltage between transmission connector and transmission body. Connector & terminal (T4) No. 6 (+) - Transmission body (-)Is the voltage approx. 0 V?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 619

Scheme 619: WIRING DIAGRAM
Scheme 619: WIRING DIAGRAM
StepCheckYesNo
1 CHECK INPUT SIGNAL FOR TCM. After driving with warm up condition, park the vehicle while depressing the brake pedal at "D" range. Read the data of «F&R Linear Solenoid Set Current» and «F&R Linear Solenoid Actual Current» using Subaru Select Monitor.Does the value of «F&R Linear Solenoid Set Current» and «F&R Linear Solenoid Actual Current» almost correspond?Check for poor contact of connector.Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 11 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit of harness.
3 CHECK F&R SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 7 - Transmission bodyIs the resistance approx. 6 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 4 .
4 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 5 .Replace the transmission harness.
5 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 7 - Transmission bodyIs the resistance 1 Mohms or more?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

StepCheckYesNo
1 CHECK INPUT SIGNAL FOR TCM. After driving with warm up condition, park the vehicle while depressing the brake pedal at "D" range. Read the data of «F&R Linear Solenoid Set Current» and «F&R Linear Solenoid Actual Current» using Subaru Select Monitor.Does the value of «F&R Linear Solenoid Set Current» and «F&R Linear Solenoid Actual Current» almost correspond?Check for poor contact of connector.Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 11 - (B11) No. 7Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness.
3 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 11 (+) - Chassis ground (-)Is the voltage approx. 0 V?Go to step 4 .Repair the short circuit of harness.
4 CHECK F&R SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 7 - Transmission bodyIs the resistance approx. 6 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 5 .
5 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 6 .Replace the transmission harness.
6 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Turn the ignition switch to ON. Measure the voltage between transmission connector and transmission body. Connector & terminal (T4) No. 7 (+) - Transmission body (-)Is the voltage approx. 0 V?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 620

Scheme 620: WIRING DIAGRAM
Scheme 620: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 13 - Chassis groundIs the resistance 1 Mohms or more?Go to step 2 .Repair the short circuit of harness.
2 CHECK AWD SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 8 - Transmission bodyIs the resistance approx. 4 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 3 .
3 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 4 .Replace the transmission harness.
4 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 8 - Transmission bodyIs the resistance 1 Mohms or more?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 13 - (B11) No. 8Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness.
2 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 13 (+) - Chassis ground (-)Is the voltage approx. 0 V?Go to step 3 .Repair the short circuit of harness.
3 CHECK AWD SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 8 - Transmission bodyIs the resistance approx. 4 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 4 .
4 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 5 .Replace the transmission harness.
5 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Turn the ignition switch to ON. Measure the voltage between transmission connector and transmission body. Connector & terminal (T4) No. 8 (+) - Transmission body (-)Is the voltage approx. 0 V?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 621

Scheme 621: WIRING DIAGRAM
Scheme 621: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 24 - Chassis groundIs the resistance 1 Mohms or more?Go to step 2 .Repair the short circuit of harness.
2 CHECK PRIMARY UP SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 2 - Transmission bodyIs the resistance approx. 13 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 3 .
3 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 4 .Replace the transmission harness.
4 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 2 - Transmission bodyIs the resistance 1 Mohms or more?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 24 - (B11) No. 2Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness.
2 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 24 (+) - Chassis ground (-)Is the voltage approx. 0 V?Go to step 3 .Repair the short circuit of harness.
3 CHECK PRIMARY UP SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 2 - Transmission bodyIs the resistance approx. 13 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 4 .
4 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 5 .Replace the transmission harness.
5 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Turn the ignition switch to ON. Measure the voltage between transmission connector and transmission body. Connector & terminal (T4) No. 2 (+) - Transmission body (-)Is the voltage approx. 0 V?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 622

Scheme 622: WIRING DIAGRAM
Scheme 622: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 25 - Chassis groundIs the resistance 1 Mohms or more?Go to step 2 .Repair the short circuit of harness.
2 CHECK PRIMARY DOWN SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 3 - Transmission bodyIs the resistance approx. 13 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 3 .
3 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 4 .Replace the transmission harness.
4 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 3 - Transmission bodyIs the resistance 1 Mohms or more?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 25 - (B11) No. 3Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness.
2 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 25 (+) - Chassis ground (-)Is the voltage approx. 0 V?Go to step 3 .Repair the short circuit of harness.
3 CHECK PRIMARY DOWN SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 3 - Transmission bodyIs the resistance approx. 13 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 4 .
4 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 5 .Replace the transmission harness.
5 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Turn the ignition switch to ON. Measure the voltage between transmission connector and transmission body. Connector & terminal (T4) No. 3 (+) - Transmission body (-)Is the voltage approx. 0 V?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 623

Scheme 623: WIRING DIAGRAM
Scheme 623: WIRING DIAGRAM
StepCheckYesNo
1 CHECK FUSE. Turn the ignition switch to OFF. Remove the M/B fuse (No. 38).Is the fuse OK?Go to step 2 .Replace the fuse. If the fuse blows out easily, repair the short circuit of harness.
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 1 - (B12) No. 7: (B54) No. 6 - (B12) No. 8: (M/B No. 38) No. 2 - (B12) No. 6Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness.
3 CHECK HARNESS. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 6 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of harness.
4 CHECK TRANSMISSION HARNESS. Connect the TCM connector. Turn the ignition switch to ON. Measure the voltage between transmission connector terminals. Connector & terminal (B12) No. 6 (+) - (B12) No. 7 (-)Is the voltage 10 - 13 V?Go to step 5 .Repair the open circuit of harness or poor contact of connector.
5 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to OFF. Connect the transmission connector. Lift up the vehicle. Start the engine. Set the select lever to "D" range. Read the data of «Primary Pulley Speed» using Subaru Select Monitor.Does the value of «Primary Pulley Speed» change according to those of «Turbine Revolution Speed»?Current condition is normal. Repair the poor contacts of harnesses of primary speed sensor and transmission connector.Go to step 6 .
6 CHECK TRANSMISSION HARNESS. Turn the ignition switch to OFF. Disconnect the transmission connector. Disconnect the primary speed sensor connector. Measure the resistance between transmission connector and primary speed sensor connector. Connector & terminal (T3) No. 6 - (AT1) No. 3: (T3) No. 7 - (AT1) No. 1: (T3) No. 8 - (AT1) No. 2Is the resistance less than 1 ohms?Replace the primary speed sensor. Refer to PRIMARY SPEED SENSOR .Replace the transmission harness.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 624

Scheme 624: WIRING DIAGRAM
Scheme 624: WIRING DIAGRAM
StepCheckYesNo
1 CHECK FUSE. Turn the ignition switch to OFF. Remove the M/B fuse (No. 38).Is the fuse OK?Go to step 2 .Replace the fuse. If the fuse blows out easily, repair the short circuit of harness.
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 1 - (B12) No. 7: (B54) No. 7 - (B12) No. 5: (M/B No. 38) No. 2 - (B12) No. 6Is the resistance less than 1 ohms?Go to step 3 .Repair the open circuit of harness.
3 CHECK HARNESS. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 7 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the short circuit of harness.
4 CHECK TRANSMISSION HARNESS. Connect the TCM connector. Turn the ignition switch to ON. Measure the voltage between transmission connector terminals. Connector & terminal (B12) No. 6 (+) - (B12) No. 7 (-)Is the voltage 10 - 13 V?Go to step 5 .Repair the open circuit of harness or poor contact of connector.
5 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to OFF. Connect the transmission connector. Lift up the vehicle. Start the engine. Set the select lever to "D" range. Read the data of «Secondary Pulley Speed» using Subaru Select Monitor.Does the value of «Secondary Pulley Speed» change according to those of «Front Wheel Speed»?Current condition is normal. Repair the poor contacts of harnesses of secondary speed sensor and transmission connector.Go to step 6 .
6 CHECK TRANSMISSION HARNESS. Turn the ignition switch to OFF. Disconnect the transmission connector. Disconnect the secondary speed sensor connector. Measure the resistance between transmission connector and secondary speed sensor connector. Connector & terminal (T3) No. 5 - (AT4) No. 2: (T3) No. 6 - (AT4) No. 3: (T3) No. 7 - (AT4) No. 1Is the resistance less than 1 ohms?Replace the secondary speed sensor. Refer to SECONDARY SPEED SENSOR .Replace the transmission harness.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Scheme 625

Scheme 625: WIRING DIAGRAM
Scheme 625: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 26 - (B11) No. 11Is the resistance less than 1 ohms?Go to step 2 .Repair the open circuit of harness.
2 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 26 (+) - Chassis ground (-)Is the voltage approx. 0 V?Go to step 3 .Repair the short circuit of harness.
3 CHECK LOCK-UP DUTY SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 11 - Transmission bodyIs the resistance approx. 13 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 4 .
4 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 5 .Replace the transmission harness.
5 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Turn the ignition switch to ON. Measure the voltage between transmission connector and transmission body. Connector & terminal (T4) No. 11 (+) - Transmission body (-)Is the voltage approx. 0 V?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

StepCheckYesNo
1 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 26 - Chassis groundIs the resistance 1 Mohms or more?Go to step 2 .Repair the short circuit of harness.
2 CHECK LOCK-UP DUTY SOLENOID. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 11 - Transmission bodyIs the resistance approx. 13 ohms? (when engine cold)Check for poor contact of the connector, and repair the defective part.Go to step 3 .
3 CHECK HARNESS INSIDE TRANSMISSION. CAUTION: Start work after ATF cools down. Remove the transmission valve cover. Check for the harness pinch, damage.Is the harness normal?Go to step 4 .Replace the transmission harness.
4 CHECK HARNESS INSIDE TRANSMISSION. Disconnect the control valve body connector. Measure the resistance between transmission connector and transmission body. Connector & terminal (T4) No. 11 - Transmission bodyIs the resistance 1 Mohms or more?Replace the control valve body. Refer to CONTROL VALVE BODY .Replace the transmission harness.
CAUTION
Start work after ATF cools down.

DIAGNOSTIC PROCEDURE

More articles — Continuously Variable Transaxle (Cvt) (Diagnostics)