Question about Chevrolet TrailBlazer
Already replaced accelerator pedal with switch and all codes reaapear
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: code p1635
The P01535 refers to the 5 volt reference circuit generated by the PCM. The reference voltage is being pulled low for some reason.
If there are no other codes present, the code is indicating the PCM 5 volt output is too low caused by an internal PCM failure.
If you have a volt meter, check the voltage at the TPS ( gray wire and key in run position ) and see what the actual voltage is.
Let me know and we can go from there.
Posted on Apr 23, 2009
Hello, Check the wiring at the throttle body on the motor that drives the throttle plate. Wires can be broken inside the insulation or bad contact at the connector.
Posted on Jan 13, 2011
SOURCE: error code p1271 on trailblazer
That trouble code is faulting the accelerator pedal sensor. The APP sensors are located in a TAC module mounted to the accelerator pedal bracket. There are three individual APP sensors within the TAC module. Three separate signal circuits, low reference circuits, and 5v reference circuits are used to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is depressed.
Posted on Nov 30, 2011
P0141 Heated o2 sensor. P0134 Heater 02 sensor circuit, These 02 sensor has a fuse in the engine junction box listed as IGN 1. This supplies 12volts to the heater circuit, check to make sure its not a open fuse. If you already replaced the sensors make sure you clear the code. or it will stay in memory.
Posted on Apr 13, 2012
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