1. Connect the connector to the running light unit.
2. Connect the negative battery cable.
3. Measure the voltage at the running light unit 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 running light unit.
Terminal Voltage List (Reference)



Running light unit removal/installationMazda 6 Service Manual: Front lower arm (front) removal/installation
1. Remove in the order indicated in the table.
2. Install in the reverse order of removal.
Front Lower Arm (Front) Ball Joint Removal Note
Separate the ball joint from the knuckle using the SSTs.
Front Lower Arm (Front) Bushing (Inner Side) Removal Note
Press the bushing (inner side) out ...
Mazda 6 Service Manual: General procedures
PRECAUTION (FRONT AND REAR AXLE)
Wheel and Tire Removal/Installation
1. The removal and installation procedures for the wheels and tires are not
mentioned in this section. When a wheel is removed, tighten it to 88-118 N·m
{9.0-12.0 kgf·m, 65.0-87.0 ft·lbf}
Brake Line Disconnection/Connecti ...