For a complete wiring diagram Refer to Section 8W.When Monitored:Continuously.Set Condition:When the Totally Integrated Power Module (TIPM) detects a OVERCURRENT condition.Possible Causes(L163) LEFT SIDEMARKER LAMP CONTROL CIRCUIT SHORT TO GROUND(L163) LEFT SIDEMARKER LAMP CONTROL CIRCUIT SHORTED TO VOLTAGETOTALLY INTEGRATED POWER MODULE1. TEST FOR INTERMITTENT CONDITIONTurn the ignition on.With the scan tool, clear all DTC'sTurn the Left Turn Signal on.With the scan tool, read DTC's.Does the scan tool display active: B17BF-LEFT SIDEMARKER LAMP CONTROL CIRCUIT OVERCURRENT?YesGo To 2NoThe condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) 2. LEFT REAR TURN SIGNAL BULBTurn the ignition off.Remove Left Rear Turn Signal Bulb.Inspect the Left Rear Turn Signal Bulb.Is the inoperative bulb OK?YesGo To 3NoReplace the Inoperative bulb in accordance with the Service Information.Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) 3. (L163) LEFT SIDEMARKER LAMP CONTROL CIRCUIT SHORT TO GROUNDDisconnect the TIPM C4 harness connector.Disconnect the Left Sidemarker Lamp harness connector.Measure the resistance between ground and the (L163) Left Sidemarker Lamp Control circuit.Is the resistance above 10k ohms?YesGo To 4No Repair the (L163) Left Sidemarker Lamp Control circuit for a short to ground.Perform the BODY VERIFICATION TEST-VER1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) 4. (L163) LEFT SIDEMARKER LAMP CONTROL CIRCUIT SHORTED TO VOLTAGETurn the ignition on.Measure for voltage on the (L163) Left Sidemarker Lamp Control circuit.Is there any voltage present?YesRepair the (L163) Left Sidemarker Lamp Control circuit short to voltage.Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) NoReplace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)