Mazda 6 manuals

Mazda 6 Service Manual: Panel light control switch inspection

Mazda 6 Service Manual / Body electrical system / Interior lighting system / Panel light control switch inspection

1. Connect the connector to the panel light control switch.

2. Connect the negative battery cable.

3. Measure the voltage at the panel light control switch using voltmeter.

4. If the value are not as specified in the Terminal Voltage List (Reference), inspect the parts under Action and related wiring harnesses.

5. 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.

Terminal Voltage Table (Reference)



Terminal C inspection

1. Measure the wave pattern of the terminal C on the panel light control switch using an oscilloscope.


2. Set the headlight switch to either the TNS or headlight position.

3. Set the panel light control switch to the brightest position.

4. Verify that the pattern on the screen is as shown in the figure.


5. Verify that the pattern on the screen matches the pattern shown in the figure as the panel light control switch is gradually turned to the darkest position.


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