DTC P2764 [AW6A-EL, AW6AX-EL]

id0502j7805500

DTC P2764

TCC control solenoid circuit malfunction (short to ground/open circuit)
DETECTION CONDITION
•  Open or short circuit in TCC control solenoid 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:
•  This is a continuous monitor (CCM).
•  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 TCC control solenoid terminal B and TCM terminal B9
•  Open circuit between TCC control solenoid terminal A and TCM terminal B4
•  Short to ground in wiring harness between TCC control solenoid terminal B and TCM terminal B9
•  Short to ground in wiring harness between TCC control solenoid terminal A and TCM terminal B4
•  TCC control solenoid malfunction
•  Damaged connector between line pressure control solenoid and TCM
•  TCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  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 REPAIR INFORMATION AVAILABILITY
•  Verify related Service 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
INSPECT TERMINAL COUPLE COMPONENT FOR POOR CONNECTION
•  Turn the ignition switch to the LOCK position.
•  Remove the TCM.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Are terminals normal?
Yes
Go to the next step.
No
Replace the couple component, then go to Step 8.
4
INSPECT RESISTANCE OF TCC CONTROL SOLENOID CIRCUIT
•  Inspect for resistance between couple component terminals B9 and B4 (wiring harness-side).
•  Is resistance within 5.0—5.6 ohms?
Yes
Go to go to Step 8.
No
Go to the next step.
5
INSPECT TERMINAL TCC CONTROL SOLENOID FOR POOR CONNECTION
•  Disconnect the TCC control solenoid connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Are terminals normal?
Yes
Go to the next step.
No
Replace the couple component, then go to Step 8.
6
INSPECT TERMINAL COUPLE COMPONENT CIRCUIT FOR OPEN CIRCUIT
•  Inspect for continuity between couple component terminals and line pressure control solenoid terminals (wiring harness-side).
―  Terminal B9 and terminal B
―  Terminal B4 and terminal A
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the couple component, then go to Step 8.
7
INSPECT TERMINAL COUPLE COMPONENT CIRCUIT FOR SHORT TO GROUND
•  Inspect for continuity between couple component terminals (wiring harness-side).
―  Terminal B9 and all terminals except B9/B4
―  Terminal B4 and all terminals except B9/B4
•  Is there continuity?
Yes
Repair or replace the couple component, then go to the next step.
No
Replace the control valve body, then go to the next step.
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [AW6A-EL, AW6AX-EL].)
8
VERIFY TROUBLESHOOTING OF DTC P2764 COMPLETED
•  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 the same DTC present?
Yes
Replace the TCM, then go to the next step.
(See TCM REMOVAL/INSTALLATION [AW6A-EL, AW6AX-EL].)
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “After Repair Procedure”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [AW6A-EL, AW6AX-EL].)
No
DTC troubleshooting completed.