DTC P2720

Shift solenoid G circuit malfunction (short to ground/open circuit)

DETECTION CONDITION

• Open or short circuit in shift solenoid G signal system (while TCM monitors solenoid output voltage, the voltage that differs from the signal output by CPU in TCM is detected).

Diagnostic support note:

• The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle.

• A PENDING CODE is not available.

• FREEZE FRAME DATA is available.

• The AT warning light illuminates.

• The DTC is stored in the TCM memory.

POSSIBLE CAUSE

• Open circuit between shift solenoid G terminal B and TCM terminal 1Y

• Open circuit between shift solenoid G terminal A and TCM terminal 1L

• Short to ground in wiring harness between shift solenoid G terminal B and TCM terminal 1Y

• Short to ground in wiring harness between shift solenoid G terminal A and TCM terminal 1L

• Shift solenoid G malfunction

• Damaged connector between shift solenoid G and TCM

• TCM malfunction

STEP

INSPECTION

ACTION

1

• Has the FREEZE FRAME DATA been recorded?

Yes

Go to the next step.

No

Record the FREEZE FRAME DATA on the repair order, then go to the next step.

2

• Verify related Service Bulletins and/or on-line repair information availability.

• Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

• If the vehicle is not repaired, go to the next step.

No

Go to the next step.

3

• Turn the ignition switch to the LOCK position.

• Disconnect the TCM connector.

• Inspect for poor connection at TCM terminals 1Y and 1L (such as damaged/pulled-out pins, corrosion).

• Are terminals normal?

Yes

Go to the next step.

No

Repair or replace the connector and/or terminal, then go to Step 13.

4

• Inspect for resistance between TCM terminals 1Y and 1L (wiring harness-side).

• Is the resistance within 5.0—5.6 ohms?

  (See SOLENOID VALVE INSPECTION [SJ6A-EL].)

Yes

Go to the next step.

No

Go to go to Step 7.

5

• Disconnect the couple component connector.

• Inspect for continuity between TCM terminals (wiring harness-side) and body ground.

• Terminal 1Y and body ground

• Terminal 1L and body ground

• Is there continuity?

Yes

Go to the next step.

No

Repair or replace the wiring harness for short to ground, then go to Step 13.

6

• Inspect for continuity between couple component terminals (wiring harness-side) and body ground.

• Terminal D and body ground

• Terminal C and body ground

• Is there continuity?

Yes

Go to go to Step 13.

No

Repair or replace the couple component, then go to the next step.

7

• Turn the ignition switch to the LOCK position.

• Disconnect the couple component connector.

• Inspect for poor connection at couple component terminals H and G (such as damaged/pulled-out pins, corrosion).

• Are terminals normal?

Yes

Go to the next step.

No

Repair or replace the connector and/or terminal, then go to Step 13.

8

• Inspect the resistance between couple component (transmission case side) terminals H and G.

• Is the resistance within 5.0—5.6 ohms?

  (See SOLENOID VALVE INSPECTION [SJ6A-EL].)

Yes

Go to the next step.

No

Go to Step 10.

9

• Inspect for continuity between TCM terminals and couple component terminals (wiring harness-side).

• Terminal 1Y and terminal D

• Terminal 1L and terminal C

• Is there continuity?

Yes

Go to Step 13.

No

Repair or replace the wiring harness for open circuit, go to Step 13.

10

• Disconnect the shift solenoid G connector.

• Inspect for poor connection at shift solenoid G terminals A and B (such as damaged/pulled-out pins, corrosion).

• Are terminals normal?

Yes

Go to the next step.

No

Repair or replace the connector and/or terminal, then go to Step 13.

11

• Inspect the shift solenoid G.

  (See SOLENOID VALVE INSPECTION [SJ6A-EL].)

• Is the shift solenoid G normal?

Yes

Go to the next step.

No

Replace the control valve body, then go to Step 13.

(See CONTROL VALVE BODY REMOVAL [SJ6A-EL].)

(See CONTROL VALVE BODY INSTALLATION [SJ6A-EL].)

12

• Inspect for continuity between couple component terminals and shift solenoid G terminals (wiring harness-side).

• Terminal D and terminal B

• Terminal C and terminal A

• Is there continuity?

Yes

Go to the next step.

No

Repair or replace the couple component, then go to the next step.

13

• Make sure to reconnect all the disconnected connectors.

• Clear the DTC from the memory using the M-MDS.

• Drive the vehicle in D range and make sure that gears shift smoothly from 1GR to 6GR.

• Is same DTC present?

Yes

Replace the TCM, then go to the next step.

(See TCM REMOVAL/INSTALLATION [SJ6A-EL].)

No

Go to the next step.

14

• Perform the “After Repair Procedure”.

  (See AFTER REPAIR PROCEDURE [SJ6A-EL].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [SJ6A-EL].)

No

Troubleshooting completed.