Transmission Control Module Supply Voltage

SYMPTOM CHART
Condition(s)
DTC P1793 Ignition supply malfunction greater than 16, less than 7 volts.
Possible Source(s):
- Battery charging system fault
- Harness fault
- Connector loose or corroded
- Connector pin(s) bent or tracking between connections
Action(s) to take:
- GO to [Pinpoint Test K] Pinpoint Test K (P1789, P1793)

DTC P1789 Ignition supply malfunction greater than 7, less than 9 volts.
Possible Source(s):
- Battery charging system fault
- Blown fuse
- Harness fault
- Connector loose or corroded
- Connector pin(s) bent or tracking between connections
- Ground fault
Action(s) to take:
- GO to [Pinpoint Test K] Pinpoint Test K (P1789, P1793)