B-3 Cooling Fan System — Connector Locations
Z-39wiring diagramAT-only inset detail in the engine bay. B3-03 cooling fan motor is the BLACK-cased unit (variant marker).
Engine-bay pictorial for B-3 Cooling Fan System sub-circuit, identifying the Relay & Main Fuse Block (X-01/X-02), Cooling Fan Relay B3-01 mounted in the block, inline connector X-10, Water Thermoswitch B3-02 in the engine front, Cooling Fan Motor B3-03 (BLACK) on the radiator, and an AT-only inset detail.
Component LocationFig. fig1
Engine-bay locations of B-3 cooling-fan-system harness connectors and components.

1X-02(Battery-side terminal of relay & main fuse block (upper-left of engine bay))
2X-01(Output side of relay & main fuse block)
3B3-01(Cooling fan relay inside the relay & main fuse block)
4X-10(Inline harness connector between fuse block and engine front)
5B3-02(Water thermoswitch on the engine cooling jacket / front-left)
6B3-03(Cooling fan motor (BLACK) on the radiator shroud)
7Ground tag 1(Front engine bay chassis ground)
