HID BULB Halogen Bulb Warning Component Testing Circuit/System
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Printer Friendly View Page 1 of 16 2010 Buick LaCrosse 3.0L Eng CXL 1Search™ HID BULB Halogen Bulb Warning WARNING: Halogen bulbs contain gas under pressure. Handling a bulb improperly could cause it to shatter into flying glass fragments. To help avoid personal injury: • Turn off the lamp switch and allow the bulb to cool before changing the bulb. • Leave the lamp switch OFF until the bulb change is complete. • Always wear eye protection when changing a halogen bulb. • Handle the bulb only by its base. Avoid touching the glass. • Keep dirt and moisture off the bulb. • Properly dispose of the used bulb. • Keep halogen bulbs out of the reach of children. Component Testing Static Test 1. Ignition ON, observe the scan tool Ambient Light Sensor parameter. The reading should be between 1.4-4.5 V and change with ambient light changes. 2. Test the B10B Ambient Light/Sunload Sensor by varying the ambient light while monitoring the sensors voltage output. 3. Verify that the voltage output is within the range of the specification. 1. If not within the specified range, replace the B10B Ambient Light/Sunload Sensor. Circuit/System Verification Ignition ON, observe the scan tool Ambient Light Sensor parameter. The reading should be between 1.4-4.5 V and change with ambient light changes. Repair Procedures [ Automatic Light Malfunction ] Perform the Diagnostic Repair Verification after completing the diagnostic procedure. • Sun Load Temperature and Headlamp Automatic Control Ambient Light Sensor Replacement • Control Module References for BCM replacement, setup and programming http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=tr ... 9/ 12/ 2016 Printer Friendly View Page 2 of 16 Repair Procedures [ High Intensity Discharge Lamp Malfunction ] Perform the Diagnostic Repair Verification after completing the diagnostic procedure. • Relay Replacement (Attached to Wire Harness) or Relay Replacement (Within an Electrical Center) • Headlamp Replacement • Headlamp Ballast Replacement (TT2) • Control Module References for BCM replacement, setup and programming Daytime Running Lamp Bulb Replacement (TT2) Fig 1: Daytime Running Lamp Bulb (TT2) Courtesy of GENERAL MOTORS CORP. Callout Component Name Preliminary Procedures WARNING: The high intensity discharge system produces high voltage and current. In order to reduce the risk of severe shocks and burns, the battery negative cable must be disconnected any time service work is being performed on or around the high intensity discharge system. WARNING: The high intensity discharge system produces high voltage and current. To reduce the risk of severe shocks and burns: 1. Never open the high intensity discharge system ballast or the arc tube assembly starter. http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=tr ... 9/ 12/ 2016 Printer Friendly View Page 3 of 16 2. Never probe between the high intensity discharge system ballast output connector and the arc tube assembly. WARNING: Refer to Halogen Bulb Warning . 1. Remove the front compartment sight shield. Refer to Front Compartment Sight Shields Replacement . 2. Partially disengage the electrical jumper harness from the headlamp. 3. Rotate and remove the bulb socket. 4. Pull the daytime running lamp bulb (DRL) from the lamp socket. 1 Daytime Running Lamp Bulb Headlamp Ballast Replacement (TT2) Fig 2: Headlamp Ballast (TT2) Courtesy of GENERAL MOTORS CORP. Callout Component Name Preliminary Procedure: WARNING: The high intensity discharge system produces high voltage and current. In order to reduce the risk of severe shocks and burns, the battery negative cable must be disconnected any time service work is being performed on or around the high intensity discharge system. http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=tr ... 9/ 12/ 2016 Printer Friendly View Page 4 of 16 WARNING: The high intensity discharge system produces high voltage and current. To reduce the risk of severe shocks and burns: • Never open the high intensity discharge system ballast or the arc tube assembly starter. • Never probe between the high intensity discharge system ballast output connector and the arc tube assembly. Remove the headlamp assembly. Refer to Headlamp Replacement . Headlamp Ballast Screw (Qty:3) 1 CAUTION: Refer to Fastener Caution . Tighten: Hand tighten the screws equally. Headlamp Ballast Assembly 2 Tip: Ensure the seal is not damaged when installing the ballast back into the headlamp assembly. http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=tr ... 9/ 12/ 2016 Printer Friendly View Page 5 of 16 Headlamp Bulb Replacement (TT2) Fig 3: Headlamp Bulb (TT2) Courtesy of GENERAL MOTORS CORP. Callout Component Name Preliminary Procedures WARNING: The high intensity discharge system produces high voltage and current. In order to reduce the risk of severe shocks and burns, the battery negative cable must be disconnected any time service work is being performed on or around the high intensity discharge system. WARNING: The high intensity discharge system produces high voltage and current. To reduce the risk of severe shocks and burns: 1. Never open the high intensity discharge system ballast or the arc tube assembly starter. 2. Never probe between the high intensity discharge system ballast output connector and the arc tube assembly. http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=tr ... 9/ 12/ 2016 Printer Friendly View Page 6 of 16 1. Remove the front compartment sight shield. Refer to Front Compartment Sight Shields Replacement . 2. Remove the headlamp bulb accessory cover assembly. 3. Disconnect the headlamp bulb electrical connector from the bulb. 4. Remove the three screws from the headlmap bulb. 5. Rotate and remove the headlamp bulb. Headlamp Bulb Accessory Cover Assembly 1 Procedure: Rotate the cover counter-clockwise and remove from the headlamp housing. Headlamp Bulb Screw (Qty: 3) 2 CAUTION: Refer to Fastener Caution . Headlamp Bulb WARNING: Refer to Halogen Bulb Warning . 3 Tip: Rotate and remove the bulb. Headlamp Bulb Replacement (TT4 High Beam) Fig 4: Headlamp Bulb (TT4 High Beam) Courtesy of GENERAL MOTORS CORP. http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=tr ... 9/ 12/ 2016 Printer Friendly View Page 7 of 16 Callout Component Name Preliminary Procedure: Remove the front compartment sight shield. Refer to Front Compartment Sight Shields Replacement . Headlamp Bulb Accessory Cover Assembly 1 Tip: Disconnect the electrical connector from the headlamp bulb socket. Headlamp Bulb WARNING: Refer to Halogen Bulb Warning . 2 Procedure: Rotate the bulb socket a quarter turn counter-clockwise and remove. Headlamp Bulb Replacement (TT4 Low Beam) Fig 5: Headlamp Bulb (TT4 Low Beam) Courtesy of GENERAL MOTORS CORP. Callout Component Name Preliminary Procedure: Remove the front compartment sight shield. Refer to Front Compartment Sight Shields Replacement . Headlamp Bulb Accessory Cover Assembly 1 Tip: Disconnect the electrical connector from the headlamp bulb socket. 2 Headlamp Bulb http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=tr ... 9/ 12/ 2016 Printer Friendly View Page 8 of 16 WARNING: Refer to Halogen Bulb Warning . Procedure: Rotate the bulb socket a quarter turn counter-clockwise and remove. Headlamp Replacement Fig 6: Headlamp Courtesy of GENERAL MOTORS CORP. Callout Component Name Preliminary Procedure: Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement . Headlamp Screw (Qty: 4) CAUTION: Refer to Fastener Caution . 1 Tighten: 2.5 N.m (22 lb in) 2 Headlamp Assembly (W/Front Side Marker and Park and Turn Signal Lamp) http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=tr ... 9/ 12/ 2016 Printer Friendly View Page 9 of 16 WARNING: Refer to Halogen Bulb Warning . Procedure 1. Pull the headlamp assembly forward in order to access and disconnect the forward lamp harness electrical connector from the headlamp jumper harness connector. 2. Remove the headlamp bulb accessory covers. 3. Transfer the headlamp bulbs as needed. 4. Aim the headlamps after the headlamps have been re-installed. Refer to Headlamp Aiming . When To Change The HID Bulb An inoperative bulb, end of life occurs when the bulb gets old and becomes unstable. The bulb may begin shutting itself OFF sporadically and unpredictably at first, perhaps only once during a 24 h period. When the bulb begins shutting itself off occasionally, the ballast will automatically turn the bulb back ON again within 0.5 s. The ballast will restrike the bulb so quickly that the bulb may not appear to have shut off. As the bulb ages, the bulb may begin to shut off more frequently, eventually over 30 times per minute. When the bulb begins to shut off more frequently, the ballast receives an extreme amount of repetitive current input. Repetitive and extreme amount restarts or restrikes, without time for the ballast to cool down, will permanently damage the ballast. As a safeguard, when repetitive restrikes are detected, the ballast will not attempt to restrike the lamp. The ballast then shuts down and the bulb goes out. The following symptoms are noticeable signs of an inoperative bulb: • Flickering light, caused in the early stages of an inoperative bulb • Lights go out, caused when the ballast detects, repetitive bulb restrike • Color change - The lamp may change to a dim pink glow. Input power to the ballast must be terminated in order to reset the ballasts fault circuitry. In order to terminate the input power to the ballast, turn the lights OFF and back ON again. Turning the lights OFF and back ON again resets all of the fault circuitry within the ballast until the next occurrence of an extreme amount of repetitive bulb restrike. When an extreme amount of repetitive bulb restrikes occur, replace the starter/arc tube assembly. The ballast will begin the start-up process when the starter/arc tube assembly is replaced. Repeatedly resetting the input power can overheat the internal components and cause permanent damage to the ballast.