Trailblazer Cooling Fan Speed Sensor Circuit

The drive fluid is well viscous until the engines runs a bit.

Trailblazer cooling fan speed sensor circuit. I got check engine light on and poped code p1481 fan speed circuit sensor does that mean that i have a bad fan clutch since mine is an electronic fan clutch. Engine code po526 fan speed sensor circuit 2005 chevrolet trailblazer. This one is a bit different as it is an electrically controlled clutch electro visco. Its the cooling fan speed sensor that needs to be replaced.

If the code returns they have successfully diagnosed a larger issue with the fan speed sensor circuit and should move on to other repairs. Thus it s good to monitor the fan speed using an advanced scan tool to verify if the actual fan speed matches the commanded fan speed. Cooling fan speed sensor circuit. Here an interesting website on trailblazer fan system.

P0526 cooling fan speed sensor circuit fix code p0526 cooling fan speed sensor circuit. If during operation the pcm detects a loss of the cooling fan speed signal dtc p0526 will set. The cooling fan speed sensor is built in inside the fan clutch. 2002 05 chevy trailblazers trailblazer exts gmc envoys envoy xls.

This diagnostic trouble code dtc is a generic obd ii powertrain code. Gm has issued a service bulletin to address a p0526 cooling fan speed sensor circuit trouble code on the following vehicles. The hall effect sensor returns a signal pulse through the speed signal circuit in response to the reluctor track which is located inside the fan clutch. Common mistakes when diagnosing the p0526 code in some cases a reoccurring p0526 code is due to a mechanic replacing the cooling fan motors without performing a more thorough diagnosis.

Now they all will do that with a clutched radiator fan. If you have a code p1481 or similar pointing at the cooling fan speed sensor often you have to fix or replace the wiring rather that the sensor. As the speed of the fan increases the voltage must also increase. 8 people found this helpful.

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. Will the mechanical fan clutch from a 2008 trailblazer fit and be a suitable for the.