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P0123-THROTTLE POSITION SENSOR 1 CIRCUIT HIGH (5.7L) (CONTINUED) 6. (K922) SENSOR RETURN CIRCUIT OPEN Measure the resistance of the (K922) Sensor Return circuit from the Is the resistance below 5.0 ohms? Yes >> Go To 7 No >> Repair the open in the (K922) Sensor Return circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 7. PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal Were there any problems found? Yes >> Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Replace and program the Powertrain Control Module per Service Information. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 8. THROTTLE FOLLOWER TEST With a scan tool, perform the Throttle Follower Test. Monitor the TP Sensor No.1 voltage. Does voltage start at approximately 0.3 of a volt and go above 4.7 volts with a smooth transition? Yes >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assem- bly. After installation is complete, using a scan tool select the ETC RELEARN function. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 138 ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L DR/DH |