Fuel filler cap warning system
FUEL FILLER CAP WARNING SYSTEM : System Diagram
FUEL FILLER CAP WARNING SYSTEM : System Description
INPUT/OUTPUT SIGNAL CHART
Input
Unit/Sensor
Input signal to ECM
ECM function
EVAP control system pressure sensor
Pressure in purge line
Fuel filler cap warning cont ...
BCM Branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the BCM for damage, bend and loose
connection (unit side and
connector side).
Is the inspection result normal?
YES > ...