DTC 82

Shift Solenoid "A" Circuit:

Circuit Description:
The PCM/TCM continually monitors 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 82 will set if there is a fault detected on the shift solenoid "A" circuit. For example, if shift solenoid "A" is commanded "ON" by the PCM/TCM, then voltage on the circuit should drop as soon as the solenoid grounds.

If, however, voltage remains high for 2 seconds after the "ON" command is given, then Code 82 will be set. The opposite is also true, if shift solenoid 'A" is "OFF" then voltage on the circuit should be high, if voltage drops for .5 seconds or longer, Code 82 will be set.

Shift Solenoid "A" Diagnostic Chart:

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

1. This procedure checks shift solenoid "A" and the internal transmission wiring harness for shorts.

2. The next check is for power to the shift solenoid from the ignition through the fuse.

3. The third test checks CKT 1222 for a short to ground.

4. This test checks the PCM/TCM's ability to ground or control shift solenoid "A".

Diagnostic Aids:
Check all connections, especially at the transmission pass-thru connector.