Page 298 - 2006 HARLEY FLSTCI SERVICE MANUAL

5.22 slowly moved, the voltage should change 5-79

Check for the following conditions: Poor Connection: Inspect ECM and harness connector ● [78B] for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor ter- minal-to-wire connection and damaged harness. Perform 5.8 WIGGLE TEST to locate intermittents: If ● connections and harness check out OK, monitor TP sen- sor voltage using a DVOM while moving related connec- tors and wiring harness. If the failure is induced, the TP sensor voltage reading will change. TP sensor scaling: Observe the TP sensor voltage dis- ● play while opening the throttle with engine sto

DESCRIPTION

DTC P0122, P0123 The ECM supplies a 5 volt signal (terminal 14) to the throttle position sensor (TP sensor). The TP sensor sends a signal back to the ECM (terminal 24). The returned signal varies in voltage according to throttle position. At idle (closed throttle), the signal is typically in the range of 0.20-0.80 volts. At wide open throttle, the signal is normally 4.0-4.9 volts. A code P0122 or P0123 will set if the TP sensor voltage sig- nal does not fall within the acceptable range. Table 5-29. Code Description TP sensor open/low TP sensor high DIAGNOSTICS The DVOM reads throttle position in volts. V

HOME GENERAL TP Sensor ● ● DTC P0122 P0123 Diagnostic Tips described below.