Diagnostic Test

INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all TIPM DTCs.
3. Turn the Highbeam Headlamps on.
4. With the scan tool read the DTC information.
  Does the scan tool read: B1633-LEFT HI BEAM CONTROL CIRCUIT LOW?
  
  Yes
  - Go to Step 2.
  No
  - The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
LEFT HIGH BEAM BULB
1. Turn the ignition off.
2. Inspect the Left High Beam Bulb assembly for a short condition.
  Is the inoperative bulb OK?
  
  Yes
  - Go to Step 3.
  No
  - Replace the inoperative bulb in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
(L33) LEFT HIGHBEAM OUTPUT CIRCUIT
1. Turn the ignition off.
2. Disconnect the TIPM C3 harness connector.
3. Measure the resistance between ground and the (L33) Left Highbeam Output circuit at the TIPM.
  Is the resistance below 5.0 Ohms?
  
  No
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  Yes
  - Repair the (L33) Left Highbeam Output circuit for a short to ground condition.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .