Good morning I have a question I have a 09 series 60 Detroit in a 4900 Ex western star a code came up# 21 tps sensor np I replaced the sensor on the throttle pedal code went out than came back I checked wiring all good. Called the local Detroit diesel dealer Wajax he mentioned something about older trucks can have an issue with the ground for the tps. To fix this they do new wiring from the tps to the ecm any one else no of this or had this issue. I'm still working the truck I haven't noticed any issues. The garage can't look at it till next week. Thoughts
TPS SENSOR
Discussion in 'Western Star Forum' started by RandyLAROSE, Oct 10, 2017.
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Unless you have a glider, your series 60 is a DDEC VI. In that case, you have an MCM and a CPC--not an "ECM."
Your throttle control goes to the CPC for your torque request. In that case, you need to check the wiring from your accel pedal to the CPC.
Check connector 1 on the CPC pins 7,8,9 to the TPS. Check for pin tension, corrosion, a voltage drop test with a load. If you don't know how to do any of those, bring your truck in to a certified WST dealer.
QUALITYTRUCK Thanks this. -
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