DTC P2720 [SJ6A-EL]

id050208811900

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.

•  The AT warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle.

•  PENDING CODE is not available.

•  FREEZE FRAME DATA is available.

•  The DTC is stored in the TCM memory.

POSSIBLE CAUSE

•  TCM connector or terminal malfunction

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

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

•  Coupler component connector or terminal malfunction

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

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

•  Shift solenoid G connector or terminal malfunction

•  Shift solenoid G malfunction

•  TCM malfunction

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. • The AT warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle. • PENDING CODE is not available. • FREEZE FRAME DATA is available. • The DTC is stored in the TCM memory.
POSSIBLE CAUSE	• TCM connector or terminal malfunction • Short to GND in wiring harness between shift solenoid G terminal B and TCM terminal 1Y • Short to GND in wiring harness between shift solenoid G terminal A and TCM terminal 1L • Coupler component connector or terminal malfunction • Open circuit between shift solenoid G terminal B and TCM terminal 1Y • Open circuit between shift solenoid G terminal A and TCM terminal 1L • Shift solenoid G connector or terminal malfunction • Shift solenoid G malfunction • TCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has the FREEZE FRAME DATA been recorded on the repair order?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related service 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.
2		No	Go to the next step.
3	INSPECT TCM CONNECTOR FOR POOR CONNECTION • 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.
3		No	Repair or replace the connector and/or terminal, then go to Step 13.
4	INSPECT RESISTANCE OF SHIFT SOLENOID G CIRCUIT • 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.
4		No	Go to go to Step 7.
5	INSPECT SHIFT SOLENOID G CIRCUIT FOR SHORT TO GND • Disconnect the coupler component connector. • Inspect for continuity between TCM terminals (wiring harness-side) and body GND. ― Terminal 1Y and body GND ― Terminal 1L and body GND • Is there continuity?	Yes	Go to the next step.
5		No	Repair or replace the wiring harness for short to GND, then go to Step 13.
6	INSPECT SHIFT SOLENOID G CIRCUIT FOR SHORT TO GND • Inspect for continuity between coupler component terminals (wiring harness-side) and body GND. ― Terminal D and body GND ― Terminal C and body GND • Is there continuity?	Yes	Go to go to Step 13.
6		No	Repair or replace the coupler component, then go to the next step.
7	INSPECT COUPLER COMPONENT CONNECTOR FOR POOR CONNECTION • Turn the ignition switch to the LOCK position. • Disconnect the coupler component connector. • Inspect for poor connection at coupler component terminals H and G (such as damaged/pulled-out pins, corrosion). • Are terminals normal?	Yes	Go to the next step.
7		No	Repair or replace the connector and/or terminal, then go to Step 13.
8	INSPECT RESISTANCE OF SHIFT SOLENOID G CIRCUIT • Inspect the resistance between coupler 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.
8		No	Go to Step 10.
9	INSPECT SHIFT SOLENOID G CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between TCM terminals and coupler component terminals (wiring harness-side). ― Terminal 1Y and terminal D ― Terminal 1L and terminal C • Is there continuity?	Yes	Go to Step 13.
9		No	Repair or replace the wiring harness for open circuit, go to Step 13.
10	INSPECT SHIFT SOLENOID G CONNECTOR FOR POOR CONNECTION • 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.
10		No	Repair or replace the connector and/or terminal, then go to Step 13.
11	INSPECT SHIFT SOLENOID G • Inspect the shift solenoid G. (See SOLENOID VALVE INSPECTION [SJ6A-EL].) • Is the shift solenoid G normal?	Yes	Go to the next step.
11		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 SHIFT SOLENOID G CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between coupler 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.
12		No	Repair or replace the coupler component, then go to the next step.
13	VERIFY TROUBLESHOOTING OF DTC P2720 COMPLETED • Make sure to reconnect all the disconnected connectors. • Clear the DTC using the M-MDS. • Perform the following procedure to ensure that the DTC has been resolved: 1. Start the engine. 2. Warm-up the engine and transmission. 3. Drive the vehicle in D range and make sure that the gears shift smoothly from 1GR to 6GR. • Is the same DTC present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION [SJ6A-EL].)
13		No	Go to the next step.
14	VERIFY NO DTC HAS BEEN PRESENTED • Perform the “Reading DTCs Procedure”. (See AUTOMATIC TRANSMISSION ON-BOARD DIAGNOSTIC FUNCTION [SJ6A-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SJ6A-EL].)
14		No	DTC troubleshooting completed.