Pinpoint tests — car equipped with OSC

NOTE:Refer to the transaxle harness connector illustration preceding these Pinpoint tests.

NOTE:Refer to the Transaxle Internal Wiring Harness Diagram prior to these Pinpoint tests.

NOTE:Retrieve and record all DTCs. All TR and OSS sensor DTCs should be addressed before entering OSC.

A1: SETTING UP ELECTRONIC DIAGNOSTICS

1Enter the OFF position.

2Gear selector lever in position P.

3Before proceeding, make sure that the transmission wiring harness connector is installed correctly in the block with the drive axle, is in good condition and that the contacts in the connector are correctly secured.

4Connect the diagnostic tool.Scan tool

5Enter the ON position.

6Enter the following diagnostic mode of the diagnostic tool: Diagnostic Data Link.

7Enter the following diagnostic mode of the diagnostic tool: PCM.

8Enter the following diagnostic mode of the diagnostic tool: Active Control Modes.

9Enter the following diagnostic mode of the diagnostic tool: Output State Control (OSC).

10Enter the following diagnostic mode on the diagnostic tool: Trans - Bench Mode.

• Does the vehicle enter Stand Mode?

→ Yes

STAY in Stand Mode. Go to A2

→ No

REPEAT the procedure to enter Bench Mode. If the vehicle does not enter Bench Mode, REFER to PCED for PCM diagnostic information.

A2: WIGGLE TEST (CHECKING BY MOVING WIRES/CONNECTORS)

1Stay in Stand Mode.

2Select the PID parameters to be monitored.

- SSA

- SSB

- SSC

- SSD

- SSE

3Select "ON" to turn on the suspect solenoid valve.

4Click "SEND".

5Wiggle/shake all transmission wiring and plug connectors in the block with the drive axle. Monitor for changes in the state of the electromagnetic valve.

6Select "OFF" to turn off the solenoid valve.

7Click "SEND".

• Does the fault status of the suspected solenoid valve change?

→ Yes

REPAIR the electrical circuit. CHECK the system for proper operation.

→ No

Go to A3

A3: CHECKING THE OPERATION OF THE SOLENOID VALVE

1Turn ON/OFF each solenoid valve.

• Does the solenoid valve turn on and off when a command is received and can you hear it being activated?

→ Yes

Go to A4

→ No

Go to A5

A4: CHECKING THE OSC TRANS - DRIVE MODE (TRANSMISSION DRIVING MODE)

1Practice OSC Trans - Drive mode..

2Select the GEAR mode for the shift solenoids or follow the GEAR mode procedures as outlined in this section.

3Select TCC for the torque converter clutch. Follow the TCC procedures in Drive mode as outlined in this section.

• Does the transmission upshift and downshift or engage/release the torque converter when commanded?

→ Yes

CLEAR all DTCs. Perform a road test to see if the problem is still present. If the problem is still present. For more information, refer to Symptom-Based Diagnostics in this section to diagnose shifting or torque converter related problems.

→ No

Go to A5

A5: CHECKING FOR BATTERY VOLTAGE

1Disconnect the Transaxle Wiring Harness Connector.

2Visually inspect all wires and connectors for damage.

3Measure the voltage between the following pin on the transaxle wiring harness connector, wiring side, and ground:

- SSA - pin 6

- SSB - pin 8

- SSC - pin 3

- SSD - pin 9

- SSE - pin 1

• Is voltage registered?

→ Yes

Go to A7

→ No

Go to A6

A6: CHECK FOR SHORT CIRCUIT ON "MASS"

1Enter the OFF position.

2Measure the resistance between the following pin on the transaxle wiring harness connector, wiring side, and ground:

- SSA - pin 6

- SSB - pin 8

- SSC - pin 3

- SSD - pin 9

- SSE - pin 1

• Resistance greater than 10,000 ohms?

→ Yes

Go to A8

→ No

REPAIR the electrical circuit concerned. CHECK the system for proper operation.

A7: CHECKING FOR SHORT CIRCUIT TO (+) BATTERY

1Disconnect the PCM connector.

2Enter the ON position.

3Measure the voltage between the following pin on the transaxle wiring harness connector, wiring side, and ground:

- SSA - pin 6

- SSB - pin 8

- SSC - pin 3

- SSD - pin 9

- SSE - pin 1

• Is there any voltage present?

→ Yes

REPAIR the electrical circuit concerned. CHECK the system for proper operation.

→ No

INSTALL a new PCM. CHECK the system for proper operation.

A8: CHECKING FOR OPEN ELECTRICAL CIRCUIT

1Disconnect the Powertrain Control Module.

2Install the 104-pin EEC - V module splitter box.

3Measure the resistance between the following pins of the PCM connector, harness side, and the following pins of the transaxle harness connector, harness side, for the suspected solenoid valve:

- SSA - pin 73 of the splitter box for the 104-pin EEC module - V - pin 6 of the transaxle connector

- SSB - pin 1 of the splitter box for the 104-pin EEC module - V - pin 8 of the gearbox connector in the block with the driving axle

- SSC - pin 82 of the splitter box for the 104-pin EEC module - V - pin 3 of the transaxle connector

- SSD - pin 99 of the splitter box for the 104-pin EEC module - V- pin 9 of the transmission connector in the block with the driving axle

- SSE - pin 102 of the splitter box for the 104-pin EEC module - V - pin 1 of the transaxle connector

• Resistance less than 5 ohms?

→ Yes

Go to A9

→ No

REPAIR the electrical circuit concerned. CHECK the system for proper operation.

A9: CHECKING THE ELECTRICAL SIGNAL

1Connect the PCM Plug Connector.

2Enter the ON position.

3Measure the voltage between the following pin on the transaxle harness connector, harness side, and ground for the suspected solenoid:

- SSA - pin 6

- SSB - pin 8

- SSC - pin 3

- SSD - pin 9

- SSE - pin 1

4Enter the following diagnostic mode on the diagnostic tool: Trans - Bench Mode.

5Select SSA, SSB, SSC, SSD or SSE.

6Select "ON".

7Click "SEND".

8Measure the voltage when the solenoid valve is turned on/off.

9Select "OFF", press "SEND".

• Does the voltage change?

→ Yes

Go to A10

→ No

INSTALL a new PCM. CHECK the system for proper operation.

A10: CHECKING THE RESISTANCE OF THE SOLENOID VALVE CIRCUIT

1Measure the resistance between the following solenoid pin and the solenoid body, component side, for the suspect solenoid:

- SSA - pin 6 and housing - 10.9 - 26.2 Ohm

- SSB - pin 8 and body - 10.9 - 26.2 Ohm

- SSC - pin 3 and body - 1.0 - 4.2 Ohm

- SSD - pin 9 and case - 1.0 - 4.2 Ohm

- SSE - pin 1 and body - 1.0 - 4.2 Ohm

• Is the resistance normal?

→ Yes

If SSA or SSB is suspected, Go to A12.

If SSC, SSD or SSE is suspected, Go to A11

→ No

INSTALL a new SSA, SSB, SSC, SSD or SSE. CHECK that the system is working properly.

A11: CHECK SSC, SSD, SSE FOR SHORT CIRCUIT "MASS"

1Measure the resistance between pin 1 of the suspected solenoid valve, on the element side, and the solenoid valve body.

• Resistance less than 5 ohms?

→ Yes

INSTALL a new SSC, SSD or SSE. CHECK that the system is working properly.

→ No

Go to A12

A12: CHECK THE INTERNAL AXLE TRANSMISSION WIRING HARNESS FOR AN OPEN CIRCUIT

1Measure the resistance between the following pins of the transaxle internal wiring harness connector and the plug connectors of the suspected solenoid valve:

- SSA - between pin 6 of the internal transmission wiring harness connector in the block with the driving axle and pin 6 of the internal transmission wiring harness solenoid valve connector in the block with the driving axle

- SSB - between pin 8 of the internal transmission wiring harness connector in the block with the driving axle and pin 8 of the solenoid valve connector of the internal transmission wiring harness in the block with the driving axle

• Resistance less than 5 ohms?

→ Yes

Go to A13

→ No

INSTALL a new internal transaxle wiring harness. CHECK the system for proper operation.

A13: CHECK THE INTERNAL AXLE TRANSMISSION WIRING HARNESS FOR AN OPEN CIRCUIT

1Measure the resistance between the pins of the internal transaxle wiring harness connector and the plug connectors of the suspected solenoid valve:

- SSC - between pin 3 of the internal transaxle wiring harness connector and pin 3 of the internal transaxle wiring harness solenoid valve connector

- SSD - between pin 9 of the internal transmission wiring harness connector in the block with the driving axle and pin 9 of the solenoid valve connector of the internal transmission wiring harness in the block with the driving axle

- SSE - between pin 1 of the internal transaxle wiring harness connector and pin 1 of the internal transaxle wiring harness solenoid valve connector

• Resistance less than 5 ohms?

→ Yes

Go to A14

→ No

INSTALL a new internal transaxle wiring harness. CHECK the system for proper operation.

A14: CHECKING THE TRANSAXLE INTERNAL WIRING HARNESS GROUND CIRCUIT

1Measure the resistance between the following pins of the transaxle internal wiring harness connector and ground (lifting eye):

- SSC - between pin 11 of the connector of the electromagnetic valve of the internal wiring harness of the gearbox in the block with the drive axle and the "ground" (lifting eye)

- SSD - between pin 12 of the connector of the electromagnetic valve of the internal wiring harness of the gearbox in the block with the drive axle and the "ground" (lifting eye)

- SSE - between pin 10 of the connector of the electromagnetic valve of the internal wiring harness of the gearbox in the block with the driving axle and the "ground" (lifting eye)

• Resistance less than 5 ohms?

→ Yes

INSTALL a new PCM. CHECK the system for proper operation.

→ No

INSTALL a new internal transaxle wiring harness. CHECK the system for proper operation.

NOTE:Refer to the transaxle harness connector illustration preceding these Pinpoint tests.

NOTE:Refer to the Transaxle Internal Wiring Harness Diagram prior to these Pinpoint tests.

B1: SETTING UP ELECTRONIC DIAGNOSTICS

1Enter the OFF position.

2Gear selector lever in position P.

3Before proceeding, make sure that the transmission wiring harness connector is installed correctly in the block with the drive axle, is in good condition and that the contacts in the connector are correctly secured.

4Connect the diagnostic tool.Scan tool

5Enter the ON position.

6Select the diagnostic data transmission channel.

7Select PCM.

8Select the PID/Data Monitor and Record option.

9Enter the following diagnostic mode of the diagnostic tool: PID Parameters; TFT, TFTV.

• Does the vehicle enter PID/Data Monitoring and Recording mode?

→ Yes

STAY in PID/Data Monitoring and Recording mode. Go to B2

→ No

REPEAT the procedure to enter the PID. If the vehicle does not enter the PID, REFER to PCED for PCM diagnostic information.

B2: CHECKING THE WARM - UP / COLD - DOWN CYCLING

1When monitoring the PID TFT parameters, perform the following check: If the transaxle is cold, let it run to warm it up. If the transaxle is warm, let the transaxle cool down.

• Do the TFT PID parameters increase as the transaxle heats up, or decrease as the transaxle cools down, or as the TFT or TFTV moves in and out of its operating range?

→ Yes

If the TFT PID parameters increase as the transaxle heats up or decrease as the transaxle cools down, CLEAR all DTCs. Perform a road test to see if the problem still exists. If the problem still exists. Refer to Symptom Based Diagnosis in this section for additional information to diagnose transaxle overheating. If the TFT moves in and out of operating range, INSPECT for an intermittent problem in the internal/external wiring harness, sensor, or connector.

→ No

Go to B3

B3: CHECK THE POWERTRAIN CONTROL MODULE AND VEHICLE WIRING HARNESS FOR POWER SUPPLY

1Disconnect the Transaxle Wiring Harness Connector.

2Visually inspect all wires and connectors for damage.

3Measure the voltage between pin 5 of the transmission wiring harness connector in the transaxle block, wiring side, and ground; and between pin 4 of the transmission wiring harness connector in the block with the drive axle, on the wiring side, and ground.

• Is there any voltage present?

→ Yes

Go to B4

→ No

Go to B5

B4: CHECKING THE VEHICLE'S WIRING HARNESS FOR A SHORT TO (+) BATTERY

1Disconnect the PCM connector.

2Measure the voltage between pin 5 of the transmission wiring harness connector in the transaxle block, wiring side, and ground; and between pin 4 of the transmission wiring harness connector in the block with the drive axle, on the wiring side, and ground.

• Is there any voltage present?

→ Yes

Repair the electrical circuit. Check the correct operation of the system.

→ No

INSTALL a new PCM. CHECK the system for proper operation.

B5: CHECK THE POWERTRAIN CONTROL MODULE AND VEHICLE WIRING HARNESS FOR A SHORT CIRCUIT "MASS"

1Connect the PCM Plug Connector.

2Measure the resistance between pin 5 of the transmission wiring harness connector in the transaxle block, on the wiring side, and ground; and between pin 4 of the transmission wiring harness connector in the block with the drive axle, on the wiring side, and ground.

• Resistance greater than 10,000 ohms?

→ Yes

Go to B7

→ No

Go to B6

B6: CHECK THE VEHICLE WIRING HARNESS FOR A SHORT CIRCUIT "MASS"

1Disconnect the PCM connector.

2Measure the resistance between pin 5 of the transmission wiring harness connector in the transaxle block, on the wiring side, and ground; and between pin 4 of the transmission wiring harness connector in the block with the drive axle, on the wiring side, and ground.

• Resistance greater than 10,000 ohms?

→ Yes

INSTALL a new PCM. CHECK the system for proper operation.

→ No

REPAIR the electrical circuit. CHECK the system for proper operation.

B7: CHECKING THE VEHICLE'S WIRING HARNESS FOR AN OPEN CIRCUIT

1Install the junction box

2Measure the resistance between pin 5 of the transaxle harness connector, harness side, and pin 37 of the 104-pin EEC - V module junction box, harness side; and between pin 4 of the transmission wiring harness connector in the block with the drive axle, on the wiring side, and pin 91 of the branch box for the 104-pin EEC - V module, on the wiring side.

• Resistance less than 5 ohms?

→ Yes

Go to B10

→ No

Repair the electrical circuit. Check the correct operation of the system.

B8: CHECK THE INTERNAL AXLE TRANSMISSION WIRING HARNESS FOR A SHORT CIRCUIT "MASS"

1Measure the resistance between pin 5 of the transaxle wiring harness connector (component side, transaxle internal wiring harness) and ground; and between pin 4 of the transaxle wiring harness connector (from the element side, internal transaxle wiring harness) and ground.

• Resistance greater than 10,000 ohms?

→ Yes

Go to B9

→ No

INSTALL a new internal transaxle wiring harness. Check for proper system operation.

B9: CHECK THE INTERNAL AXLE TRANSMISSION WIRING HARNESS FOR AN OPEN CIRCUIT

1Measure the resistance between pin 5 of the transaxle wiring harness connector (component side, transaxle internal wiring harness) and pin 5 of the transmission fluid temperature sensor internal wiring harness connector; and between pin 4 of the transaxle wiring harness connector (from the element side, internal transaxle wiring harness) and pin 4 of the internal transmission fluid temperature sensor wiring harness connector.

• Resistance less than 5 ohms?

→ Yes

Go to B10

→ No

INSTALL a new internal transaxle wiring harness. Check for proper system operation.

B10: CHECKING THE RESISTANCE OF THE TFT SENSOR CIRCUIT

1Measure the resistance between pin 5 of the transaxle wiring harness connector (element side, transaxle internal wiring harness) and pin 4 of the transaxle wiring harness connector (element side, transaxle internal wiring harness).

2Write down the result.

3The resistance should be within approximately the following ranges:

- -20°C (-4°F) - 236 kOhm - 317 kOhm

- 0°C (32°F) - 83.2 kOhm - 107 kOhm

- 20°C (68°F) - 33.5 kOhm - 41.2 kOhm

- 40°C (104°F) - 14.6 kOhm - 17.6 kOhm

- 60°C (140°F) - 7.08 kOhm - 8.01 kOhm

- 80°C (176°F) - 3.61 kOhm - 4.06 kOhm

- 100°C (212°F) - 1.96 kOhm - 2.20 kOhm

- 120°C (248°F) - 1.13 kOhm - 1.25 kOhm

- 130°C (266°F) - 0.87 kOhm - 0.96 kOhm

• Is the resistance within range?

→ Yes

For more information, refer to Symptom Diagnosis in this section to diagnose the overheating problem.

→ No

INSTALL a new TFT sensor. Check that the system is working properly.

NOTE:Refer to the transmission range (TR) sensor connector illustration preceding these Pinpoint tests.

NOTE:Refer to the Transmission Range (TR) Sensor Diagnostic Chart prior to these Pinpoint Tests.

NOTE:DTC P0705 may also be generated if the tail lamp circuit is open. Check and repair the tail lamp circuit as necessary.

C1: CHECKING THE TR SENSOR POSITION ALIGNMENT

1Check the alignment of the TR sensor.

• Is the TR sensor correctly aligned?

→ Yes

Go to C2

→ No

ADJUST the position of the TR sensor. Check that the system is working properly.

C2: CHECKING THE SHIFT CABLE/LINKAGE ADJUSTMENT

1Check the shift cable/linkage for proper adjustment; REFER to Section 307 - 05.

• Is the shift cable/linkage adjusted correctly?

→ Yes

Go to C3

→ No

ADJUST the shift cable/linkage; REFER to Section 307 - 05. Check that the system is operating correctly.

C3: CHECKING THE TR SENSOR POWER SUPPLY CIRCUIT AT START-UP

1Disconnect the TR sensor plug connector.

2Disconnect C641 ignition coils.

3Enter the START position.

4Measure the voltage between pin 6 TR of the sensor connector, on the wiring side, and ground.

• Is the voltage approximately 12V?

→ Yes

Go to C4

→ No

REPAIR the 50 - BB14 (Gray/Red) starting circuit. Check for proper system operation.

C4: CHECKING THE ELECTRICAL POWER SUPPLY CIRCUIT OF THE TRANSMISSION IN THE DRIVE AXLE UNIT

1Connect C641 ignition coils.

2Enter the ON position.

3Measure the voltage between pin 1 of the TR sensor connector, on the wiring side, and ground.

• Is the voltage greater than 10V?

→ Yes

Go to C6

→ No

Go to C5

C5: CHECK THE VEHICLE WIRING HARNESS FOR A SHORT CIRCUIT "MASS"

1Enter the OFF position.

2Disconnect the PCM connector.

3Measure the resistance between pin 1 of the TR sensor connector, on the wiring side, and ground.

• Resistance greater than 10,000 ohms?

→ Yes

Go to C6

→ No

REPAIR the electrical circuit. CHECK the system for proper operation.

C6: CHECK THE VEHICLE'S WIRING HARNESS FOR AN OPEN CIRCUIT

1Enter the OFF position.

2Disconnect the PCM connector.

3Install the 104-pin EEC - V module splitter box.

4Measure the resistance between pin 1 of the TR sensor, harness side, and pin 71 of the 104-pin EEC - V module junction box, harness side.

• Resistance less than 5 Ohm?

→ Yes

Go to C7

→ No

REPAIR the electrical circuit. CHECK the system for proper operation.

C7: CHECKING THE TR SENSOR ELECTRICAL CIRCUIT FOR A SHORT CIRCUIT TO (+) POWER SUPPLY

1Connect the PCM Plug Connector.

2Select PARK.

3Enter the ON position.

4Measure the voltage between pins 2, 3, 4, 5, 7, and 8 of the TR sensor connector, on the wiring harness side, and ground:

• Is there any voltage present?

→ Yes

Go to C8

→ No

Go to C10

C8: CHECK PCM FOR SHORT TO (+) BATTERY

1Enter the OFF position.

2Disconnect the PCM connector.

3Enter the ON position.

4Measure the voltage between pins 2, 3, 4, 5, 7, and 8 of the TR sensor connector, on the wiring harness side, and ground:

• Is there any voltage present?

→ Yes

REPAIR the electrical circuit concerned. CHECK the system for proper operation.

→ No

INSTALL a new PCM. CHECK the system for proper operation.

C9: CHECK THE VEHICLE WIRING HARNESS FOR A SHORT CIRCUIT "MASS"

1Enter the OFF position.

2Disconnect the PCM connector.

3Disconnect Fuse 39 (10 A).

4Measure the resistance between pins 2, 3, 4, 5, 7, and 8 of the TR sensor connector, on the wiring harness side, and ground:

• Resistance greater than 10,000 ohms?

→ Yes

INSTALL a new PCM. CHECK the system for proper operation.

→ No

REPAIR the electrical circuit concerned. CHECK the system for proper operation.

C10: CHECK THE TR SENSOR ELECTRICAL CIRCUIT FOR A SHORT CIRCUIT "MASS"

1Enter the OFF position.

2Connect the PCM Plug Connector.

3Disconnect Fuse 39 (10A).

4Measure the resistance between pins 2, 3, 4, 5, 7, and 8 of the TR sensor connector, on the wiring harness side, and ground:

• Resistance greater than 10,000 ohms?

→ Yes

Go to C11

→ No

Go to C9

C11: CHECKING THE RESISTANCE OF THE TR SENSOR CIRCUIT

1Connect Fuse 39 (10A).

2Measure the resistance between the following pins of the TR sensor connector, on the component side:

- parking position P - pins 6 and 5, 8 and 9 of the TR sensor - less than 5 Ohm

- reverse gear R - pins 1 and 4 of the TR sensor - less than 5 Ohm

- neutral position N - pins 1 and 8 of the TR sensor - less than 5 Ohm

- motion transmission D - pins 1 and 2 of the TR sensor - less than 5 Ohm

- 2nd gear - pins 1 and 7 of the TR sensor - less than 5 Ohm

- 1st gear - pins 1 and 3 of the TR sensor - less than 5 Ohm

• Is the resistance within the expected range?

→ Yes

INSTALL a new PCM. CHECK the system for proper operation.

→ No

INSTALL a new TR sensor. CHECK the system for proper operation.

NOTE:Refer to the transaxle harness connector illustration preceding these Pinpoint tests.

NOTE:Retrieve and record all DTCs. All TR and OSS sensor DTCs must be addressed before entering Output State Control (OSC).

D1: SETTING UP ELECTRONIC DIAGNOSTICS

1Enter the OFF position.

2Gear selector lever in position "P".

3Before proceeding, make sure that the transmission wiring harness connector is installed correctly in the block with the drive axle, is in good condition and that the contacts in the connector are correctly secured.

4Install a 300 psi gauge into the port to check line pressure.

5Connect the diagnostic tool.Scan tool

6Enter the START position.

7Start the engine and let it run.

8Enter the following diagnostic mode of the diagnostic tool: Diagnostic Data Link.

9Enter the following diagnostic mode on the diagnostic tool: PCM.

10Enter the following diagnostic mode of the diagnostic tool: Active Control Modes.

11Enter the following diagnostic mode of the diagnostic tool: Output State Control (OSC).

12Enter the following diagnostic mode on the diagnostic tool: Trans - Bench Mode.

• Does the vehicle enter Stand Mode?

→ Yes

STAY in Stand Mode. Go to D2

→ No

REPEAT procedure to ENTER Bench Mode. If vehicle does not enter OSC, REFER to Engine Management/Emission Control System Diagnostic Guide for PCM diagnostic information.

D2: FUNCTIONAL CHECK OF THE SOLENOID VALVE

1Control pressure gauge.

2Enter the following diagnostic mode of the diagnostic tool: Parameter; PCA.

3Select PCA

4Increase engine speed to 1,500 rpm or higher.

5Select a value - 50, 70, 90, 110, 130 or 150 psi.

6Click "SEND".

7Select another value "50-150 psi".

8Click "SEND".

9Enter the following diagnostic mode of the diagnostic tool: XXX.

10Click "SEND".

• Does the pressure reading correspond to the required pressure?

→ Yes

Clear DTCs. CHECK system operation is correct.

→ No

Go to D3

D3: CHECK VEHICLE WIRING HARNESS AND POWERTRAIN CONTROL MODULE FOR SHORT TO (+) BATTERY

1Enter the OFF position.

2Disconnect the Transaxle Wiring Harness Connector.

3Visually inspect all wires and connectors for damage.

4Enter the ON position.

5Measure the voltage between pin 7 of the transmission wiring harness connector in the transaxle block, on the wiring side, and ground; and between pin 2 of the transmission wiring harness connector in the block with the drive axle, on the wiring side, and ground.

• Is there any voltage present?

→ Yes

Go to D4

→ No

Go to D5

D4: CHECKING THE VEHICLE'S WIRING HARNESS FOR A SHORT CIRCUIT "MASS"

1Enter the OFF position.

2Disconnect the PCM connector.

3Enter the ON position.

4Measure the voltage between pin 7 of the transmission wiring harness connector in the transaxle block, on the wiring side, and ground; and between pin 2 of the transmission wiring harness connector in the block with the drive axle, on the wiring side, and ground.

• Is there any voltage present?

→ Yes

REPAIR the electrical circuit. CHECK the system for proper operation.

→ No

INSTALL a new PCM. CHECK the system for proper operation.

D5: CHECKING THE ELECTRICAL SIGNAL

1Measure the voltage between pin 7 of the transaxle wiring harness connector, wiring side, and pin 2 of the transaxle wiring harness connector, wiring side.

2Turn the solenoid valves on/off by monitoring the voltage readings.

3Enter the following diagnostic mode on the diagnostic tool: Trans - Bench Mode.

4Enter the following diagnostic mode of the diagnostic tool: Parameter; PCA.

5Select the value "50-150 psi".

6Click "SEND".

7Select another value "50-150 psi".

8Click "SEND".

9Enter the following diagnostic mode of the diagnostic tool: XXX.

10Click "SEND".

• Does the voltage change?

→ Yes

Go to D6

→ No

CHECK the wiring harness or PCM for an open or short in the circuit.

D6: CHECK THE INTERNAL AXLE TRANSMISSION WIRING HARNESS FOR A SHORT CIRCUIT "MASS"

1Enter the OFF position.

2Disconnect the PCA solenoid valve connector.

3Measure the resistance between pin 2 of the transaxle wiring harness connector (element side, internal transaxle wiring harness) and ground; and between pin 7 of the connector of the transmission wiring harness in the block with the driving axle (from the element side, the internal wiring harness of the transmission in the block with the driving axle) and the ground.

• Resistance greater than 10,000 ohms?

→ Yes

Go to D7

→ No

INSTALL a new internal transaxle wiring harness. Check for proper system operation.

D7: CHECKING THE INTERNAL AXLE TRANSMISSION WIRING HARNESS FOR AN OPEN CIRCUIT

1Measure the resistance between pin 2 of the transaxle wiring harness connector (component side, transaxle internal wiring harness) and pin 2 of the transaxle internal wiring harness connector; and between pin 7 of the connector of the transmission wiring harness in the block with the driving axle (from the side of the element, the internal wiring harness of the transmission in the block with the driving axle), and pin 7 of the connector of the internal wiring harness of the transmission in the block with the driving axle.

• Resistance less than 5 ohms?

→ Yes

Go to D8

→ No

INSTALL a new internal transaxle wiring harness. Check for proper system operation.

D8: CHECKING THE RESISTANCE OF THE SOLENOID VALVE COIL CIRCUIT

1Enter the OFF position.

2Measure the resistance between the PCA solenoid valve pins and record the result.

• Is the resistance between 2.4 and 7.3 ohms?

→ Yes

Go to D9

→ No

INSTALL a new PCA solenoid. Check for proper system operation.

D9: CHECK THE SOLENOID VALVE CIRCUIT FOR A SHORT CIRCUIT "MASS"

1Measure the resistance between the PCA solenoid valve and the solenoid valve body and record the result.

• Resistance greater than 10,000 ohms?

→ Yes

For more information, refer to Symptom Diagnosis in this section to diagnose pressure problems. CHECK that the system is operating properly.

→ No

INSTALL a new PCA solenoid. CHECK the system for proper operation.

NOTE:Refer to the illustrations of the turbine shaft speed sensor (TSS) and output shaft speed sensor (OSS) connectors preceding these Pinpoint tests.

E1: SETTING UP ELECTRONIC DIAGNOSTICS

1Before proceeding, make sure that the transmission wiring harness connector is installed correctly in the block with the drive axle, is in good condition and that the contacts in the connector are correctly secured.

2Connect the diagnostic tool.Scan tool

3Enter the ON position.

4Enter the following diagnostic mode of the diagnostic tool: Diagnostic Data Link.

5Enter the following diagnostic mode on the diagnostic tool: PCM.

6Select the Trans Priority mode.

7Select the PID/Data Monitor and Record option.

8Select the following PID parameters: TSS or OSS.

• Does the vehicle enter the PID/Data Monitoring and Recording option?

→ Yes

STAY in PID/Data Monitoring and Recording mode. Go to E2

→ No

REPEAT the procedure to ENTER the PID. If the vehicle does not enter the PID, REFER to PCED for PCM diagnostic information.

E2: CHECKING THE MOTION CYCLE

1While monitoring the PID of the corresponding sensor, drive the vehicle so that the transmission shifts up and down through all gears.

• Does the TSS or OSS speed PID increase and decrease according to the change in engine speed and vehicle speed?

→ Yes

Go to E3

→ No

If the TSS or OSS Speed PID does not increase or decrease in accordance with changes in engine speed and vehicle speed, INSPECT the vehicle wiring harness and sensor for an open or short in the electrical circuit or for problems in the PCM or internal electronics. Go to E4

E3: CHECKING THE CHAOTICITY OF THE SIGNAL IN THE MOTION CYCLE

1By monitoring the PID of the corresponding sensor, drive the vehicle so that the transmission shifts up and down through all gears.

• Is the TSS or OSS speed PID signal erratic (dropping to zero or close to zero and returning to normal)?

→ Yes

If the sensor signal is erratic, INSPECT the wiring harness, sensor, or connector for an intermittent problem. Go to E4

→ No

CLEAR all DTCs. Perform OBD procedures.

E4: CHECK POWERTRAIN CONTROL MODULE AND WIRING HARNESS FOR POWER SUPPLY

1Enter the OFF position.

2Disconnect the TSS sensor plug connector.

3Disconnect the OSS sensor plug connector.

4Enter the ON position.

5For TSS, measure the voltage between pin 1 of the TSS sensor connector, harness side, and ground; and between pin 2 of the TSS sensor connector, on the wiring side, and ground.

6For OSS, measure the voltage between pin 1 of the OSS connector, harness side, and ground; and between pin 2 of the OSS connector, on the wiring side, and ground.

• Is there any voltage present?

→ Yes

Go to E5

→ No

Go to E6

E5: CHECK WIRING HARNESS FOR SHORT TO (+) BATTERY

1Enter the OFF position.

2Disconnect the PCM connector.

3Enter the ON position.

4For TSS, measure the voltage between pin 1 of the TSS sensor connector, harness side, and ground; and between pin 2 of the TSS sensor connector, on the wiring side, and ground.

5For OSS, measure the voltage between pin 1 of the OSS connector, harness side, and ground; and between pin 2 of the OSS connector, on the wiring side, and ground.

• Is there any voltage present?

→ Yes

REPAIR the electrical circuit concerned. CHECK the system for proper operation.

→ No

INSTALL a new PCM. CHECK the system for proper operation.

E6: CHECK POWERTRAIN CONTROL MODULE AND WIRING HARNESS GROUND

1Enter the OFF position.

2Connect C415 PCM.

3For TSS, measure the resistance between pin 1 of the TSS sensor connector, harness side, and ground; and between pin 2 of the TSS sensor connector, on the wiring side, and ground.

4For OSS, measure the resistance between pin 1 of the OSS connector, wiring side, and ground; and between pin 2 of the OSS connector, on the wiring side, and ground.

• Resistance greater than 10,000 ohms?

→ Yes

Go to E8

→ No

Go to E7

E7: CHECKING THE WIRING HARNESS FOR A SHORT CIRCUIT "MASS"

1Enter the OFF position.

2Disconnect the PCM connector.

3For TSS, measure the resistance between pin 1 of the TSS sensor connector, harness side, and ground; and between pin 2 of the TSS sensor connector, on the wiring side, and ground.

4For OSS, measure the resistance between pin 1 of the OSS connector, wiring side, and ground; and between pin 2 of the OSS connector, on the wiring side, and ground.

• Resistance greater than 10,000 ohms?

→ Yes

INSTALL a new PCM. CHECK the system for proper operation.

→ No

REPAIR the electrical circuit concerned. CHECK the system for proper operation.

E8: CHECKING THE RESISTANCE OF THE TSS OR OSS SENSOR CIRCUIT.

1For TSS, measure the resistance between pin 1 of the TSS sensor connector, element side, and pin 2 of the TSS sensor connector, element side.

2For OSS, measure the resistance between pin 1 of the OSS connector, element side, and pin 2 of the OSS connector, element side.

3Record the results. The resistance should be as follows:

- OSS 675 - 775 ohms at -20°C (-4°F)

- OSS 800 - 920 ohms at 21°C (70°F)

- OSS 1210 - 1390 Ohms at 160°C (302°F)

- TSS 273 - 333 ohms at -20°C (-4°F)

- TSS 330 - 390 Ohms at 21°C (70°F)

- TSS 487 - 601 ohms at 160°C (302°F)

• Does the resistance match the specification for the corresponding sensor?

→ Yes

Go to E9

→ No

INSTALL a new sensor. CHECK the system for proper operation.

E9: CHECKING SENSORS FOR SHORT CIRCUIT "MASS"

1For TSS, measure the resistance between pin 1 of the TSS sensor connector, component side, and ground.

2For OSS, measure the resistance between pin 1 of the OSS connector, on the component side, and ground.

• Resistance greater than 10,000 ohms?

→ Yes

INSTALL a new TSS or OSS sensor. Check that the system is operating properly.

→ No

For more information, refer to Symptom Diagnosis in this section to diagnose shifting problems or torque converter problems.