Mazda MX-3 silhouetteMX-3

FLOWCHARTS — Flowchart No. 2 (continued): Step 2

G-16flowchart

TROUBLESHOOTING

Step 2

  1. 1
    Verify that the ignition switch is ON.
  2. 2
    Verify that the fan switch is off.
  3. 3
    Measure the voltage at the following terminal wires of the fan switch connector.
    B+: Battery positive voltage
    Illustration of the fan switch connector with its wiring harness; the connector terminal layout shows wires (L), (L/W), (L/Y), (L/R) labeled, for the Step 2 voltage measurement.

Step 2 — Fan switch connector voltage

(L/W)
VoltageB+
ActionMeasure voltage at (L) wire
(L/W)
VoltageOther
ActionRepair wiring harness (Resistor—Fan switch)
(L)
VoltageB+
ActionMeasure voltage at (L/R) wire
(L)
VoltageOther
ActionRepair wiring harness (Resistor—Fan switch)
(L/R)
VoltageB+
ActionMeasure voltage at (L/Y) wire
(L/R)
VoltageOther
ActionRepair wiring harness (Resistor—Fan switch)
(L/Y)
VoltageB+
ActionReplace fan switch (Refer to page G-44 or G-45)
(L/Y)
VoltageOther
ActionRepair wiring harness (Resistor—Fan switch)

Search Manual

Search pages, specs, and procedures