For a complete wiring diagram Refer to Section 8WWhen Monitored:With the ignition on.Set Condition:The ECM detects a short to voltage on the Sensor Supply 3 circuit for 0.10 seconds.Possible CausesINTERMITTENT DTC(F855) ACCELERATOR PEDAL POSITION SENSOR 1 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE(K853) CRANKSHAFT POSITION SENSOR 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGEENGINE CONTROL MODULE (ECM)Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)The ECM contains 3 internal 5–Volt Sensor Supply sources. Each 5–Volt Supply source is split into parallel circuits to provide 5 volts to multiple sensors. Sensor Supply 2 provides 5 volts to the Crankshaft Position Sensor and the Accelerator Pedal Position Sensor 1.1. CHECK FOR ACTIVE DTCTurn the ignition on.With the scan tool, erase ECM DTCs.Turn the ignition off for 10 seconds.Turn the ignition on.With the scan tool, select View DTCs.Is the status Active for this DTC?YesGo To2NoRefer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)2. (F855) ACCELERATOR PEDAL POSITION SENSOR 1 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE

Turn the ignition off.Disconnect the Accelerator Pedal Position Sensor harness connector.Disconnect the ECM harness connectors.Remove the ASD Relay from the TIPM.Connect a jumper wire between cavity 30 and cavity 87 of the ASD Relay connector.Turn the ignition on.Measure the voltage on the (F855) Accelerator Pedal Position Sensor 1 5-Volt Supply circuit at the Accelerator Pedal Position Sensor harness connector.Is the voltage below 1.0 volt?YesGo To3NoRepair the (F855) Accelerator Pedal Position Sensor 1 5 Volt Supply circuit for a short to voltage.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)3. (K853) CRANKSHAFT POSITION SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE

Turn the ignition off.Disconnect the Crankshaft Position Sensor harness connector.The jumper wire should still be in place.Turn the ignition on.Measure the voltage of the (K853) Crankshaft Position Sensor 5 Volt Supply circuit at the CKP Sensor harness connector.Is the voltage below 1.0 volt?YesGo To4NoRepair the (K853) Crankshaft Position Sensor 5 Volt Supply circuit for a short to voltage.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)4. ENGINE CONTROL MODULE (ECM)Turn the ignition off.Remove the jumper wire and install the ASD relay.Inspect the (K853) Crankshaft Position Sensor 5 Volt Supply circuit between the Crankshaft Position Sensor and the ECM.Inspect the (F855) Accelerator Pedal Position Sensor 1 5 Volt Supply circuit between the Accelerator Pedal Position Sensor and the ECM.Look for any chafed, pierced, pinched, or partially broken wires.Look for broken, bent, pushed out or corroded terminals.Refer to any Technical Service Bulletins that may apply.Were any problems found?YesRepair as necessary.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoReplace and program the Engine Control Module in accordance with the Service Information.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)