P0883

Symptom List:
P0883-TCM POWER INPUT HIGH
P0891-TRANSMISSION RLY ALWAYS ON

Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be P0883-TCM POWER INPUT HIGH.

When Monitored:
When the ignition is turned from the off position to the run position and/or the ignition is turned from the crank position to the run position.

Set Condition:
This DTC set if the Transmission Control Module (TCM) senses greater than 3 volts at the Transmission Control Relay Output circuits at the TCM prior to the TCM energizing the relay

Note: Due to the integration of the Powertrain and Transmission Control Modules, the transmission part of the PCM has its own specific power and ground circuits.

Test 1 - Test 4:

Test 5 - Test 7:

POSSIBLE CAUSES
- TRANSMISSION CONTROL RELAY STUCK CLOSED
- TRANSMISSION CONTROL RELAY CONTROL CIRCUIT SHORT TO VOLTAGE
- TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT SHORT TO VOLTAGE
- POWERTRAIN CONTROL MODULE
- INTERMITTENT WIRING AND CONNECTORS