For a complete wiring diagram Refer to Section 8W.When Monitored:Ignition on. During in plant mode the APP Sensors need to be checked to make sure that idle and full pedal travel can be reached on both sensors. The test for P2115 is only enabled once test for P2166 has passed.Set Condition:APPS No.1 has failed to achieve the required minimum value during In Plant testing. One trip fault and the code will set within 5 seconds. Engine will only idle. ETC light is illuminated.Possible CausesIN PLANT TEST FAILUREAPPS RELEARNAlways perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).1. IN PLANT TEST FAILUREIgnition on, engine not running.This DTC is set when the APP Sensors are learned in plant but do not reach the Minimum or Maximum voltage range.With a scan tool, select View DTCs.With the scan tool, erase DTCs.Start the engine.With the scan tool, view DTCs.Diagnose any APPS out of Range and 5-Volt Supply DTCs before continuing.Is the DTC Active at this time?YesGo To 2NoRefer to the INTERMITTENT CONDITION Diagnostic Procedure.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)2. APPS RELEARNWith a scan tool select the ETC RELEARN function.Next, erase DTCs.Start the engine.Does the DTC return?YesReplace the APPS Assembly per Service Information. After installation is complete, use a scan tool and select the ETC RELEARN function.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoTest Complete.