Resistive Plug

California models have a purge solenoid to allow hydrocarbon vapor to flow from the charcoal canister to the throttle body.

See Figure 4-9. All non-California models have a resistive plug connected to the purge solenoid connector. The diagnostic system will display the same diagnostic codes whether a resistive plug is in place or the connection is made to a purge solenoid.

Figure 4-9. Resistive Plug
Figure 4-8. Vapor Valve
Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook

Post a comment