LH-SFI Variable Reference Resistor Modified

Standard production breakpoints/Modifications/New features

As of 06 91 color-coded variable reference resistors have been installed. Models:
- With TWC green variable reference resistor
- Without TWC white variable reference resistor (USA California version does not have a variable reference resistor)


NOTE: On models with TWC and national version (J) it is not permitted to install a white variable reference resistor otherwise the secondary air injection pump will run constantly and the air pump may be damaged as a result.