For a complete wiring diagram Refer to Section 8W.When Monitored:With the Headlamps activated.Set Condition:When the Totally Integrated Power Module (TIPM) detects a LOW condition.Possible Causes(L43) LEFT LOW BEAM CONTROL CIRCUIT SHORT TO GROUNDLEFT LOW BEAM BULBTOTALLY INTEGRATED POWER MODULE1. INTERMITTENT CONDITIONTurn the ignition on.With the scan tool, clear all DTC's.Turn the Headlamps on.With the scan tool, read DTC's.Does the scan tool display active: B162B-LEFT LOW BEAM CONTROL CIRCUIT LOW?YesGo To 2 NoThe 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 LOW BEAM BULBTurn the ignition off.Disconnect the Left Low Beam Bulb.Turn the ignition on.With the scan tool, read DTC's.Does the DTC reset?YesGo To 3NoReplace the Left Low Beam Bulb in accordance with the Service Information.Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)3. (L43) LEFT LOW BEAM CONTROL CIRCUIT SHORT TO GROUND

Turn the ignition off.Disconnect the TIPM C3 harness connector.Disconnect the Left Headlamp harness connector.Measure the resistance between ground and the (L43) Left Low Beam Control circuit.Is the resistance above 10k ohms?YesReplace 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) NoRepair the (L43) Left Low Beam Control circuit for a short to ground.Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)