Mazda MX-5 NA silhouetteMX-5 NA

WIRING DIAGRAM Z — Engine Control / Ignition System Component Locations (Sheet B-1a)

Z-29wiring diagram

X-11 connector color varies by transmission: BROWN on AT, BLACK on MT. Federal & California / Canada splits noted inline.

Continued from Z-28

Engine Control / Ignition System — Component Locations (Sheet B-1a)

Component LocationFig. fig1

Physical locations on the engine bay (left) and under-dash (right). AT-only inset and Federal & California / Canada variants are tagged inline.

Component-location illustration for Sheet B-1a (engine control + ignition system). Left/center: engine-bay top view with callouts identifying X-02, X-01, X-03 RELAY & MAIN FUSE BLOCK, B1-02 MAIN RELAY, X-09 (GREEN), X-10, X-08, X-11 (BROWN) connectors on the bulkhead; on the engine: B1-13 CONDENSER (BLACK), B1-03 IGNITER (GRAY), B1-04 SOLENOID VALVE (PURGE) (BLACK), B1-05 SOLENOID VALVE (ISC) (BLACK), B1-06 INJECTOR NO.1, B1-07 INJECTOR NO.2, B1-08 INJECTOR NO.3, B1-09 INJECTOR NO.4, B1-10 CRANK ANGLE SENSOR, B1-11 POWER CONNECTOR, B1-12 IGNITION COIL (GRAY), X-12 (T1-OUT)(BLACK). Inset AT detail near transmission, and a FEDERAL & CALIFORNIA label on the front-fender area. Right: under-dash view showing ENGINE CONTROL B1-01 on the firewall, X-05 IGNITION SWITCH, X-04 FUSE BOX, and a CANADA inset showing the Canada-spec X-05 IGNITION SWITCH detail. Sheet 'B-1a' tab in top-left.
1X-01 / X-02 / X-03(Relay & main fuse block on left strut tower)
2B1-02(Main relay inside the relay & main fuse box)
3X-09 / X-10(Bulkhead connectors near the relay box)
4X-08, X-11(Bulkhead connectors on left fender)
5B1-01(Engine control unit — firewall, under dash)
6B1-03(Igniter — left side of engine)
7B1-04 / B1-05(Solenoid valves (purge / ISC) on intake area)
8B1-06 … B1-09(Fuel injectors on intake manifold)
9B1-10(Crank angle sensor on engine)
10B1-11(Power connector)
11B1-12(Ignition coil — gray)
12B1-13(Condenser — black)
13X-12(T1-OUT bulkhead connector, black)
14X-04 / X-05(Fuse box / ignition switch — under-dash, driver side)
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