Low Beam Does Not Turn on (One Side)

Low Beam Does Not Turn On (One Side)

The content of this article/image reflects the changes identified in TSB: T-SB-0030-08R (Rev1) May 12, 2008

HID Headlight System - Diagnostic Tips

Applicability





Parts Information





Required Tools & Equipment





* Essential SST.





Repair Procedure

NOTE: If both low beam lights will NOT come on, refer to: "Low Beam does turn on (both sides)"

1. Using the SST or DVOM or equivalent, perform a voltage drop across connector H5/H3 pins 1 and 2.
SST P/N 09082-00050 or equivalent

- If reading is equal to source voltage, proceed to step 2.
- If reading is NOT equal to source voltage, isolate and repair the trouble area in the headlight assembly power supply circuit.

2. Using the SST, check the pin fit of the 12V connector at the HID ECU.
SST P/N 00002-48937-01

- If pin fit is good, proceed to step 3.
- If pin fit is loose, repair or replace the connector and harness.

3. Switch the HID bulb between the left and right side.

- If the condition follows the HID bulb, replace the HID bulb.
- If the condition does NOT follow the bulb, replace the HID ECU.

NOTE:
- The HID bulb and HID ECU service parts for 2004-2005 model year are NOT compatible with 2006 and later model year vehicles. Installing a 2004 or 2005 model year HID Bulb or HID ECU on a 2006 or later model year vehicle may cause an intermittent operation/flickering of the HID bulb.
- In most cases, when replacing the HID bulb, the HID ECU does NOT need to be replaced. In the event of HID ECU replacement, order the following part numbers: 81107-51050 (2004-2005 model year) or 81107-47150 (2006-2008 model year)