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Ford Bronco Idle Air Bypass Valve Wiring Diagram - Circuit 361 IAC Schematic

Wiring diagram showing the idle air bypass valve and canister purge solenoid with circuit number 361.

AI caption · Photo 1636 of 1799

This is a close-up crop from a Ford wiring schematic page showing the engine-control circuit for the Idle Air Bypass Valve. Circuit number 361 is shown with the wire color code "R" (red) feeding the Idle Air Bypass Valve, which is drawn as a solenoid coil with an internal clamping diode in parallel. The same circuit 361 also branches to a second solenoid component at the right edge of the crop (only partially visible). A third component at the lower left is labeled "Canister Purge Solenoid (5.8L only)," indicating that the canister purge solenoid in this circuit applies only to 5.8L engine applications. The output side of the Idle Air Bypass Valve continues downward on a striped (two-color) wire whose label is cut off in this crop. The fragment lets a reader identify the power feed circuit number and color for the IAC/idle air bypass valve and confirms the diode inside the valve, plus the engine-specific applicability of the canister purge solenoid. No year, model, connector pin numbers, or part numbers are visible in this crop; the vehicle attribution (1990 Ford Bronco) comes from the uploader's filename, not from the document itself.

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Frequently asked questions

What circuit number feeds the Idle Air Bypass Valve in this diagram?
Circuit 361, shown with the wire color code "R" (red).
Does the Idle Air Bypass Valve contain a diode?
Yes, the schematic symbol shows a diode in parallel with the solenoid coil inside the Idle Air Bypass Valve.
Which engines use the Canister Purge Solenoid shown in this diagram?
The diagram notes the Canister Purge Solenoid is for the 5.8L engine only.
What other component shares circuit 361?
A second solenoid-type component at the right edge of the diagram is also fed by circuit 361, but its label is cut off in this crop.

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