DTC 69

DTC 69 TCC Stuck "ON":

Torque Converter Clutch (TCC) Solenoid Circuit:

Circuit Description:
The TCC is a normally open exhaust valve. The PCM activates the solenoid by grounding CKT 422 with an internal quad-driver.
The PCM continually monitors the TCC control solenoid for either a low or a high voltage depending on commanded state of the circuit.
When DTC 69 is set TCC is "ON" in all gears.

Test Description:
Number(s) below refer to circled number(s) on the diagnostic chart.

1. This test checks for a shorted, internal transmission harness or TCC solenoid.
2. This test checks power supply to the TCC solenoid.
3. This test checks CKT 422 for a short to ground.

4. This test checks the PCM ability to control the TCC solenoid.

Diagnostic Aids:
Check for stall with parking brake and in DD2".
Check all connections at the transmission pass-thru connector.
If OK, refer to "PCM Intermittent Diagnostic Trouble Codes or Performance" or "Symptom Diagnosis".
Some slight TCC slip is normal.
If DTC 69 is set and DTC 67 is not set, the fault is probably an internal mechanical transmission fault.