WIRING DIAGRAM Z — Engine Control System & Ignition System (Sheet B-1a)
Z-28wiring diagramFederal & California / Canada (with or without ABS) variants noted inline. AT/MT splits at INHIBITOR / STARTER INTERLOCK SWITCH branches. B1-01 ECU pin labels copied verbatim where legible; some pin-row labels are faint — flagged in uncertain_values.
ENGINE CONTROL SYSTEM / IGNITION SYSTEM (Sheet B-1a)
Schematic distributes battery and ignition-switch feeds to the Engine Control Unit (B1-01), the four injectors (B1-06…B1-09), the purge and ISC solenoid valves, the ignition coil + igniter, and the crank-angle sensor. Branches cross-reference Section B-1c (diagnosis connector), Section B-2 (circuit opening relay), Section C (instrument clusters), and Section G (cooling fan relay).
Connector face views (B1-01 … B1-13)
B1-01
ComponentENGINE CONTROL UNIT (E)
Wire colors / pin codes (as drawn)Multi-pin pin map — pin labels: 1V, 2I, 1B, 1H, 1C, 1B, 2W, 2X, 2U, 2D, 1Y, 2P, 2G, 2E plus B/Y, B, R, R/B, L/B, W/B, BL/Y, BR, L/B, B/Y, Y/L, Y/B, Y, Y/B, R/G, L/B, etc.
B1-02
ComponentMAIN RELAY (in relay & main fuse box, E)
Wire colors / pin codes (as drawn)W/B, B/W, W/R, B
B1-03
ComponentIGNITER (CANADA ↔ FEDERAL & CALIFORNIA WITH POWER STEERING)
Wire colors / pin codes (as drawn)BR, R, B, B/W, B/Y, L, B/W, Y
B1-04
ComponentSOLENOID VALVE (PURGE)
Wire colors / pin codes (as drawn)Y/G, W/R
B1-05
ComponentSOLENOID VALVE (ISC)
Wire colors / pin codes (as drawn)L/O, W/R
B1-06
ComponentINJECTOR NO.1
Wire colors / pin codes (as drawn)Y, Y/B
B1-07
ComponentINJECTOR NO.2
Wire colors / pin codes (as drawn)Y/B, Y/W
B1-08
ComponentINJECTOR NO.3
Wire colors / pin codes (as drawn)Y, Y/L
B1-09
ComponentINJECTOR NO.4
Wire colors / pin codes (as drawn)Y, Y/R
B1-10
ComponentCRANK ANGLE SENSOR (F)
Wire colors / pin codes (as drawn)Y/L, W, B
B1-11
ComponentPOWER CONNECTOR (F)
Wire colors / pin codes (as drawn)L, * (blank)
B1-12
ComponentIGNITION COIL (F)
Wire colors / pin codes (as drawn)W, R, L
B1-13
ComponentCONDENSER (F)
Wire colors / pin codes (as drawn)B, L