For a complete wiring diagram Refer to Section 8WWhen the ignition switch is on, the Totally Integrated Power Module (TIPM) sends a 12 volt signal to the ECM on the Starter Relay Control circuit. When the ignition switch is turned to the Start/Crank position, the ECM grounds this signal to indicate a request for Starter Motor operation.When Monitored:With the ignition on and the Starter command on.Set Condition:The ECM detects a short circuit on the (T752) Engine Starter Relay Control circuit for at 0.5 seconds.Possible CausesINTERMITTENT DTC(T752) STARTER RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE(T752) STARTER RELAY CONTROL CIRCUIT OPEN OR HIGH RESISTANCETOTALLY INTEGRATED POWER MODULEAlways perform the Pre-Diagnostic Troubleshooting procedure before proceeding.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)1. DTC IS ACTIVEIgnition on, engine not running.With the scan tool, Clear DTCs in the Engine Control Module (ECM).Attempt to start the engine several times.Monitor the scan tool for at least two minutes.With the scan tool, select View DTCs.Is the status Active for this DTC?YesGo To 2 NoRefer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)2. (T752) STARTER RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE

Turn the ignition off.Disconnect the TIPM C2 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 of the (T752) Starter Relay Control circuit in the TIPM harness connector.Is there any voltage present?YesRepair the (T752) Starter Relay Control circuit for a short to voltage.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo to 33. (T752) STARTER CONTROL CIRCUIT OPEN OR HIGH RESISTANCE

Turn the ignition off.Remove the jumper wire and install the ASD Relay.Measure the resistance of the (T752) Starter Control circuit between the TIPM harness connector and the ECM harness connector.Is the resistance below 10.0 ohms?YesReplace and program the TIPM in accordance with the Service Information.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoRepair the (T752) Starter Control circuit for an open circuit or high resistance.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)