Mazdaspeed6 L4-2.3L Turbo (2006)
Headlamp Dimmer Switch: Testing and Inspection
PANEL LIGHT CONTROL SWITCH INSPECTION
1. Connect the panel light control switch connector.
2. Connect the negative battery cable.
3. Measure the voltage at each terminal (other than terminal D).
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If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under "Inspection item(s)".
4. Disconnect the panel light control switch connector.
Terminal Voltage Table (Reference)
Terminals (A-H)
5. Verify that continuity at terminal D is as indicated in the Terminal Voltage Table (Reference).
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If there is any malfunction, inspect the parts under "Inspection item(s)".
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If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the panel light
control switch.
Terminals A and F Inspection
1. Measure the wave (Pattern of panel light control switch terminals A and F using an oscilloscope.
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Oscilloscope setting : 5 V/DIV (Y) , 5 ms/div (X) , DC range
2. Turn the light switch to the TNS or ON position.
