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Blower Switch

Detach multi-pin terminal from blower switch. Use ohmmeter or circuit tester to check for continuity between terminals at different switch positions as noted in continuity chart and corresponding illustrations. If continuity is not as shown, replace blower switch.

Fig 1: Heater Blower Switch Terminal Locations
G48760Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Heater Blower Resistor Terminal Locations
G48770Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
BLOWER SWITCH CONTINUITY CHART

Switch Position Terminal Continuity
Front
"OFF" 4
"LO" 4 to 5
"MEDIUM" 4 to 5 & 1
"HI" 4 to 5 & 2
4Runner (Rear)
"HI" 1 to 2 & 3
"OFF" None
"LO" 1 to 2