2002 Trailblazer Cooling Fan Speed Sensor

It is considered generic because it applies to all makes and models of vehicles 1996 newer although specific repair steps may vary depending on the model.

2002 trailblazer cooling fan speed sensor.

The numbers below refer to the step numbers on the diagnostic table. How to troubleshoot an electronic clutch fan circuit on an olds bravada or chevy blazer with a 4 2l engine. What the p0526 code means. 2002 05 chevy trailblazers trailblazer exts gmc envoys envoy xls.

In order to maintain proper powertrain cooling requirements and to reduce the cooling fan noise as it is in use the pcm uses a signal from the cooling fan to assess its speed. The low reference circuit. 2 output control. Gm has issued a service bulletin to address a p0526 cooling fan speed sensor circuit trouble code on the following vehicles.

The cooling fan speed signal circuit. Dtc p1481 will set if the engine is started without the drive belt on. The p0526 code means that the pcm detected a voltage reading that was either too low or too high from the electric cooling fan control circuit. This clutch fan has 5 wires.

The clutch fan stays engaged at any speed vehicle will suddenly loose acceleration and also gets poor gas mileage. Tests that the pcm receives a cooling fan speed signal through the cooling fan speed signal circuit. 2002 chevy trailblazer has a serious fan clutch problem. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube.

This diagnostic trouble code dtc is a generic obd ii powertrain code. The gm 4 2l ll8 engine cooling system receives its heat transference via a unique fan that drives air through the various radiators only when activated under certain conditions to eliminate the waste of energy it takes to constantly drive that fan against the resistance of air. Vehicle has 52 000 miles.