Mazda MX-5 NA silhouetteMX-5 NA

WIRING DIAGRAM Z — Engine Control System Component Locations (Sheet B-1b)

Z-31wiring diagram

Canada-spec under-dash inset shows the same under-dash routing with two callouts (1, 2).

Continued from Z-30

Engine Control System — Component Locations (Sheet B-1b)

Component LocationFig. fig1

Physical locations on the engine bay (left) and under-dash (right). AT inset and Canada inset shown where applicable.

Component-location illustration for Sheet B-1b. Left: engine-bay top view showing X-12 (F2-(E)/(BLACK)) bulkhead connector, B1-17 WATER THERMOSENSOR (GREEN) on the engine, B1-19 OXYGEN SENSOR (BLACK) on the exhaust manifold, B1-18 THROTTLE SENSOR (BLACK) on the throttle body, B1-14 POWER STEERING PRESSURE SWITCH, and B1-16 AIR FLOW METER (BLACK) on the air intake. Inset AT detail near transmission/firewall area. Right: under-dash view showing ENGINE CONTROL UNIT B1-01 on the firewall and SHORT CONNECTOR B1-15. A CANADA circled inset shows the Canada-spec under-dash detail with callouts 1 and 2. Sheet 'B-1b' tab in top-left.
1X-12(Bulkhead connector — left fender, black)
2B1-14(Power-steering pressure switch — on power-steering line)
3B1-15(Short connector — under-dash)
4B1-16(Air-flow meter — on intake air boot, black)
5B1-17(Water thermosensor — on engine block, green)
6B1-18(Throttle sensor — on throttle body, black)
7B1-19(Oxygen sensor — exhaust manifold, black)
8B1-01(Engine control unit — under-dash on firewall)
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