Diagnostic Mode Switch/Connector: Locations

Charcoal Canister Drivers side of engine compartment, in front of coolant res.

Charcoal Canister Vent Cap (remove when setting CO) On charcoal canister

Charcoal Canister Shut-Off Solenoid Between back of engine and battery.

Charcoal Canister Frequency Valve On top of charcoal canister

Exhaust Sampling Tube Between exhaust manifold and air flow sensor at front of engine.

Test Connection (for vehicle self-diagnosis) Between fuel distributor and fender well.