DeVille V8-4.6L VIN Y (1998)
Throttle Position Sensor: Diagram Information and Instructions
On Board Diagnostics II (OBDII) Symbol
On Board Diagnostics II (OBDII) Symbol
The OBDII symbol is used on circuit diagrams to alert the technician that the circuit is essential for proper OBDII emission control circuit operation.
Any circuit which, if it fails, causes the SERVICE ENGINE SOON indicator to turn on, is identified as an OBDII circuit.
