How do I test the left power seat switch forward/rearward circuit?

Connect a self-powered test light or ohmmeter to terminals 4 and 6 / 7 and 8 (on C352 or C3016). A good switch shows a closed circuit in Forward and an open circuit in Rearward. Then test terminals 4 and 7 / 6 and 8: a good switch shows open in Forward and closed in Rearward.

Which connector is used for the power seat switch on Super Cab models?

Connector C352 is used with Super Cab models; connector C3016 is used on all others.

How is the front up/down circuit tested?

With the meter on terminals 4 and 5 / 1 and 8, a good switch is closed in Up and open in Down. On terminals 4 and 1 / 5 and 8, it should be open in Up and closed in Down.

What tool does the testing procedure call for?

A self-powered test light or an ohmmeter connected to the specified switch terminals.

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Ford Left Power Seat Switch Wiring Schematic, Testing & Connector Pinouts

Left power seat switch schematic with connector pinouts and component testing procedure

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Schematic of the left power seat switch with connector pinout views and a component testing procedure table for circuit continuity.

AI caption April 2009 · Photo 840 of 4867

This document is a service reference page for the left (driver's side) power seat switch on a Ford vehicle, showing a wiring schematic, a component testing procedure, and connector terminal views. The schematic illustrates the internal switch contacts across all positions, with a legend defining each numbered position: 0 (Rest), 5 (Seat forward), 6 (Seat rearward), 7 (Front up), 8 (Front down), 9 (Rear up), 10 (Rear down), 11 (Seat up), and 12 (Seat down). Two connectors are referenced: C352 (used with Super Cab models) and C3016 (all others). The component testing table explains how to check the switch with a self-powered test light or ohmmeter, listing which terminal pairs to probe on each connector, which switch position to select (forward, rearward, up, down), and whether a good switch should show a closed or open circuit for each test — covering the forward/rearward circuit, front up/down circuit, rear up/down circuit, and up/down circuit. Terminal face-view illustrations for connectors C352 (Super Cab, figure F08112) and C3016 (all others, figure F08051) show the pin numbering layout. A technician can use this page to bench-test and diagnose a faulty power seat switch.

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Frequently asked questions

How do I test the left power seat switch forward/rearward circuit?: Connect a self-powered test light or ohmmeter to terminals 4 and 6 / 7 and 8 (on C352 or C3016). A good switch shows a closed circuit in Forward and an open circuit in Rearward. Then test terminals 4 and 7 / 6 and 8: a good switch shows open in Forward and closed in Rearward.
What do the switch position numbers mean on the schematic?: 0 = Rest, 5 = Seat forward, 6 = Seat rearward, 7 = Front up, 8 = Front down, 9 = Rear up, 10 = Rear down, 11 = Seat up, 12 = Seat down.
Which connector is used for the power seat switch on Super Cab models?: Connector C352 is used with Super Cab models; connector C3016 is used on all others.
How is the front up/down circuit tested?: With the meter on terminals 4 and 5 / 1 and 8, a good switch is closed in Up and open in Down. On terminals 4 and 1 / 5 and 8, it should be open in Up and closed in Down.
What tool does the testing procedure call for?: A self-powered test light or an ohmmeter connected to the specified switch terminals.