P1684

Symptom:
P1684-BATTERY WAS DISCONNECTED

When Monitored:
Whenever the ignition is in the Run/Start position.

Set Condition:
This DTC is set whenever the Transmission Control Module (TCM) is disconnected from battery power (B+) or ground. It will also be set during the DRBIII Quick Battery Disconnect procedure.

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 2-5:

Test 6-7:

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