1996 G10 Van V8-305 50L VIN M SFI Knock Sensor Diagrams Instructions Page 4617
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.
Schematic Symbols
