Consult checking system
Wiring Diagram

CONSULT Data Link Connector (DLC) Circuit
EngineFuel-filler cap
WARNING
Gasoline is extremely flammable and
highly explosive under certain conditions.
You could be burned or seriously
injured if it is misused or mishandled.
Always stop the engine and do not
smoke or allow open flames or sparks
near the vehicle when refuelin ...
C1109 Power and ground system
DTC Logic
DTC DETECTION LOGIC
DTC
Display Item
Malfunction detected condition
Possible causes
C1109
BATTERY VOLTAGE
[ABNORMAL]
When ignition voltage is 10 V or less.
When ignition voltage is 16 V or more.
Harness or connector
...
Filament
Inspection and Repair
Inspection
When measuring voltage, wrap tin foil around the top of the negative
probe. Then press the foil against the wire with your finger.
Attach probe circuit tester (in Volt range) to middle portion of
each filament.
If a filament is burned out ...