- sön 13 jul 2014, 11:09
#879718
P0221 / ECM 9160
Diagnostic trouble code (DTC) ECM-9160 is stored if the engine control module (ECM) registers a fault in the signal from the throttle position sensor (TP) for the throttle unit, potentiometer 2 (circuit 2) when the ignition is switched on
Possible source
Signal too high:
-Contact resistance or oxidation in the terminals between the engine control module (ECM) and the throttle unit
-Short-circuit to supply voltage in the signal cable
-Open-circuit in the signal ground cable for potentiometers 1 and 2
-Defective throttle unit.
Signal too low:
-Contact resistance or oxidation in the terminals between the engine control module (ECM) and the throttle unit
-Open-circuit or short-circuit to ground in the signal cable
-Open-circuit or short-circuit to ground in the power supply to potentiometers 1 and 2
-Defective throttle unit.
Faulty signal:
-Contact resistance or oxidation in the terminals between the engine control module (ECM) and the throttle unit
-The signal cables are short-circuited to each other
-Defective throttle unit
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