For a complete wiring diagram Refer to Section 8W.Friction element distress could result from an insufficient supply voltage to properly control the solenoids. To prevent this possibility, the battery voltage is monitored and the system is placed in logical limp-in if the battery voltage drops below the limit.When Monitored:With the engine running and the PCM has requested the TIPM to activate the Transmission Control Output circuit.Set Condition:If the battery voltage of the Transmission Output circuit(s) to the PCM is less than 10.0 volts for the period of 15 seconds. Note: P0562 generally indicates a gradually falling battery voltage or a resistive connection(s) to the PCM. The DTC will also set if the battery voltage sensed at the PCM is less than 6.5-volts for 200ms or where the Transmission Output circuits are less than 7.2-volts for 200ms.Possible CausesRELATED CHARGING SYSTEM DTCS(Z903 ) GROUND CIRCUITS OPEN OR HIGH RESISTANCE(T16) TRANSMISSION CONTROL OUTPUT CIRCUIT OPEN OR HIGH RESISTANCETOTALLY INTEGRATED POWER MODULE (TIPM)POWERTRAIN CONTROL MODULEAlways perform the 45RFE/545RFE Pre-Diagnostic Troubleshooting Procedure before proceeding. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE) 1. RELATED CHARGING SYSTEM DTCSWith the scan tool, read the Engine DTCs.Are there any related Charging System DTCs also present?YesRefer to the Charging System category and repair any Engine Charging System DTCs, before testing DTC P0562. NOTE: After repairing the Engine Charging System DTC's, perform the Transmission Verification test to verify the transmission control system was not damaged.Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE) NoGo To 22. CHECK FOR TIPM DTCSGenerator, battery, and charging system must be fully functional before performing this test.With the scan tool, read TIPM DTCs.Are there any TCM TIPM DTCs present.YesRefer to the Transmission category and perform the appropriate symptom. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - DIAGNOSIS AND TESTING) NoGo To 3 3. CONDITION P0562 PRESENTWith the scan tool, read Transmission DTCs.With the scan tool, check the Starts Since Set counter for P0562.This counter only applies to the last DTC set.Is the STARTS SINCE SET counter set at 0?YesGo To 4NoGo To 7 4. CHECKING (Z903) GROUND CIRCUITS

Turn the ignition off to the lock position.Disconnect the PCM C4 harness connector and connect Miller tool #8815.Check connectors - Clean/repair as necessary.Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller tool #8815 to perform diagnosis.Using a 12-volt test light connected to 12-volts, check the PCM (Z903) Ground circuits at the appropriate terminals of Miller tool #8815.The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.Does the test light illuminate brightly for all of the Ground circuits?YesGo To 5NoRepair the (Z903) Ground circuit(s) for an open or high resistance.Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE) 5. CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT

Turn the ignition off to the lock position.Disconnect the Transmission Solenoid/TRS Assembly harness connector.Ignition on, engine not running.With the scan tool under TIPM, actuate the Transmission.Using a 12-volt test light connected to ground, check all (T16) Transmission Control Output circuits at the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminals of Miller tool #8815.The (T16) Transmission Control Output circuit branches off to both Transmission Solenoid/TRS Assembly and the PCM.Does the test light illuminate brightly while cycling on and off on all (T16) Transmission Control Output circuits?YesGo To 6NoRepair the (T16) Transmission Control Output circuit for an open or high resistance.Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE) 6. CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT FOR AN OPEN

Turn the ignition off to the lock position.Disconnect the TIPM C2 harness connector.Measure the resistance of the (T16) Transmission Control Output circuit between the TIPM C2 harness connector and both the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminals of Miller tool #8815.Is the resistance above 5.0 ohms on any circuit?YesRepair the (T16) Transmission Control Output circuit for an open or high resistance.Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE) NoUsing the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM per the Service Information. With the scan tool, perform QUICK LEARN.Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE) 7. INTERMITTENT WIRING AND CONNECTORSThe conditions necessary to set this DTC are not present at this time.Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.Wiggle the wires while checking for shorted and open circuits.With the scan tool, check the DTC EVENT DATA to help identify the conditions in which the DTC was set.Where there any problems found?YesRepair as necessary.Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE) NoTest Complete.