P0890

Symptom:
P0890-SWITCHED BATTERY

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 is set if the Transmission Control Module (TCM) senses voltage on any of the pressure switch inputs 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 2-4:

Test 5-7:

POSSIBLE CAUSES
- 2/4 PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
- L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
- OD PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
- POWERTRAIN CONTROL MODULE
- INTERMITTENT WIRING AND CONNECTORS