DTC 83

TCC Solenoid Diagnostic Chart:

Torque Converter Clutch Circuit:

Circuit Description:
The PCM/TCM continually monitors voltage on each circuit connected to the "quad-driver" for either low or high voltage, depending on the commanded state of the device connected to it. Code 83 will set if the PCM/TCM detects an inappropriate reading on the TCC circuit. For example, if the TCC duty cycle is 0, but voltage on the TCC circuit drops as if the solenoid were applied then Code 83 will set. The TCC solenoid, because of it's large current draw, is connected to two terminals of a single "quad-driver."

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

1. This test checks for low resistance in the solenoid or internal transmission harness. The test also determines which circuit triggered the fault.

2. This test will check the integrity of CKT 1176.

3. This test will check for a short to ground on CKT 422.

4. This test will determine if the PCM/TCM is commanding the TCC solenoid "ON."


Diagnostic Aids:
Be sure to check all connections, especially those at the transmission pass-thru connector.

If they are OK, - Intermittent Malfunctions