P1684

Symptoms:
P1684-BATTERY WAS DISCONNECTED

When Monitored and Set Condition: P1684-BATTERY WAS DISCONNECTED
When monitored: Whenever the key is in the Run/Start position.
Set condition: This code is set whenever Transmission Control Module (TCM) is disconnected from battery power B+ or ground. It will also be set during the DRBIII (R) Quick Battery Disconnect procedure.

POSSIBLE CAUSES:
QUICK LEARN WAS PERFORMED
RECENT BATTERY DISCONNECTION
TCM WAS REPLACED OR DISCONNECTED
INTERMITTENT WIRING AND CONNECTORS
FUSED B+ CIRCUIT TO TCM OPEN
GROUND CIRCUIT OPEN