Nissan Micra Heater Wiring Diagram & Blower Fan Switch Continuity Chart (HA-6)

This is page HA-6 of a Nissan factory service manual, covering the Heater Electrical Circuit. The top half presents the heater wiring diagram, showing power flow from the ignition switch (ACC or ON position) through a 20A fuse in the fuse block (wire color OR/B) to the blower motor, fan switch, and blower resistor. Wire color codes shown include OR/B, L/B, B, G/W, L, L/R, R/W, and L/Y, with harness connectors labeled 63M, 64M, and 62M. An illumination (ILL.) circuit is marked '(Not used)', and leads route to the lighting switch and illumination control switch. The diagram carries reference number RHA677. The bottom half is the Fan Switch section, containing a continuity chart showing which switch terminals (5, 1, 2, 8, 3, 4) are connected at each lever position (OFF, 1, 2, 3, 4): terminals 5 and 4 are live in all speeds, with terminal 1, 2, 8, or 3 added at speeds 1-4 respectively. A second small chart covers the illumination lamp, showing terminals 6 and 7 energized when the lighting switch is in 1ST or 2ND position. An exploded illustration identifies the connector terminal locations (callouts 1-8) on the heater control assembly. Reference RHA680.