Mazda MX-3 silhouetteMX-3

FLOWCHARTS — Flowchart No. 2: Blower motor does not operate with fan switch at specific position

G-15flowchart

TROUBLESHOOTING

Flowchart No. 2

Flowchart No.
Value2
Symptom
ValueBlower motor does not operate with fan switch at specific position
Related components
ValueResistor, fan switch, wiring harness

Step 1

  1. 1
    Turn the ignition switch to ON.
  2. 2
    Verify that the fan switch is off.
  3. 3
    Measure the voltage at the following terminal wires of the resistor connector.
    B+: Battery positive voltage
    Illustration of the resistor connector under the dash with terminal wires (L), (L/Y), (L/W), (L/R) labeled, for the Step 1 voltage measurement.

Step 1 — Resistor connector voltage

(L/W)
VoltageB+
ActionMeasure voltage at (L) wire
(L/W)
VoltageOther
ActionReplace resistor (Refer to page G-41)
(L)
VoltageB+
ActionMeasure voltage at (L/R) wire
(L)
VoltageOther
ActionReplace resistor (Refer to page G-41)
(L/R)
VoltageB+
ActionMeasure voltage at (L/Y) wire
(L/R)
VoltageOther
ActionReplace resistor (Refer to page G-41)
(L/Y)
VoltageB+
ActionGo to Step 2
(L/Y)
VoltageOther
ActionReplace resistor (Refer to page G-41)

See also

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