B1630-RIGHT LOW BEAM CONTROL CIRCUIT HIGH

B1630-RIGHT LOW BEAM CONTROL CIRCUIT HIGH

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Totally Integrated Power Module (TIPM) receives a bus message requesting low beam lamp illumination. When this bus message is received, the TIPM provides a voltage output through the low beam driver circuit. The low beam driver circuit connects to the Low Beam Lamp. A headlamp return signal circuit is used instead of a ground circuit.

• When Monitored:

  With the low beam headlamps active.

• Set Condition:

  When the Totally Integrated Power Module (TIPM) detects a high condition on the (L44) Right Low Beam Driver circuit.

1. INTERMITTENT CONDITION

• Go To 2

• Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
• Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

2. CHECK THE (L44) RIGHT LOW BEAM DRIVER CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS

• Repair the short to voltage in the (L44) Right Low Beam Driver circuit.
• Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

• Go To 3
  

3. CHECK THE TIPM FOR CORRECT OPERATION

• Replace the Right Low Beam Bulb in accordance with the Service Information.
• Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

• Go To 4
  

4. CHECK THE (L44) RIGHT LOW BEAM DRIVER CIRCUIT FOR AN OPEN IN THE HARNESS

• Go To 5

• Repair the open in the (L44) Right Low Beam Driver circuit.
• Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).
  

5. CHECK THE (L910) RIGHT HEADLAMP RETURN SIGNAL CIRCUIT FOR AN OPEN IN THE HARNESS

• Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
• Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

• Repair the open in the (L910) Right Headlamp Return Signal circuit.
• Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).