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
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