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  1. #1
    Join Date
    Oct 2017
    Location
    Northern Az
    Posts
    50

    Default Headlight problem.

    Hi all
    The driver's side dim headlight went out. Purchased a new one and installed it. The new bulb also didn't work. The dash message center indicates bulb failure. Checked the fuses, all good. Switched out bulbs with other side, bulb was good. Light will not work in daylight mode or with the switch on. Any ideas on how to proceed?

    Thanks Brad

  2. #2
    Join Date
    Dec 2010
    Location
    Cumbria, UK. Maine USA.
    Posts
    500

    Default

    Use a test light or meter to check for power, then check for a good ground, you need to know which is at fault before anything can be suggested.
    Last edited by AKAMick; 08-24-2019 at 01:09 PM.
    Current fleet: Couple of worthless old clapped out Volvo XC70's 02, 04 & Countless P.O.S's, Rust buckets, Junk cars,( 50W Oily cesspool Sludge) Stolen and other assorted rubbish cars, 1928 Jed Clampett Tourer, (8 hole cast iron lump, original rust and decay, 40W Straight Bacon Grease),

  3. #3
    Join Date
    Oct 2017
    Location
    Northern Az
    Posts
    50

    Default

    Thanks, will check and post back.

  4. #4
    Join Date
    Oct 2017
    Location
    Northern Az
    Posts
    50

    Default

    OK finally got a chance to check the voltage at the headlight bulb plug. With the engine running and or the light switch on or off I had .05 volts. I measured it between the plug terminals and also from the positive side of the plug to a body ground.
    Thanks Brad

  5. #5
    Join Date
    Dec 2009
    Location
    GA
    Posts
    1,251

    Default

    Quote Originally Posted by Brad'sBB View Post
    OK finally got a chance to check the voltage at the headlight bulb plug. With the engine running and or the light switch on or off I had .05 volts. I measured it between the plug terminals and also from the positive side of the plug to a body ground.
    Thanks Brad
    According to the Factory wiring diagram edition that I have - for a 2004 the fuses for the dipped bean are #18 and 21 in the fuse box under the hood. #18 should be for the left side.

    I have seen several instances where the CEM turns off power to the headlamp possibly due to a short circuit, maybe a shorted bulb - After a new bulb is installed it won't work until the car is scanned with VIDA and the codes are erased.

    If you don't have access to VIDA or a compatible scan tool possible rebooting the car might solve it - Disconnect battery, hold terminals together for a few seconds, (to drain some memory) and reconnect.

  6. #6
    Join Date
    Oct 2017
    Location
    Northern Az
    Posts
    50

    Default

    Thanks. I will try the reboot as the closest dealer is 3 hours away. I was looking to purchase a scan tool. Was thinking of a carsoft i906. Anyone use or have one? Any other scan tools that you folks would recommend?
    Thanks Brad

  7. #7
    Join Date
    Dec 2018
    Location
    Massachusetts
    Posts
    12

    Default

    I had the same problem and like Hoonk said, it was the CEM circuit was shut off. I brought it to a shop with VIDA and they cleared the code.

  8. #8
    Join Date
    Dec 2009
    Location
    GA
    Posts
    1,251

    Default

    Quote Originally Posted by Brad'sBB View Post
    Any other scan tools that you folks would recommend?
    Yes, the stolen/hacked VIDA 2014d with a clone DICE unit is the best way to be able to scan your 2004 Volvo. You just need to supply a Windows 7 PRO computer with appropriate memory. Others have run VIDA in virtual machines so you don't necessarily have to have a dedicated computer. Try Ebay - should be able to find one for under $80.

  9. #9
    Join Date
    Aug 2017
    Location
    Pleasanton CA USA
    Posts
    368

    Default

    Quote Originally Posted by Brad'sBB View Post
    Thanks. I will try the reboot as the closest dealer is 3 hours away. I was looking to purchase a scan tool. Was thinking of a carsoft i906. Anyone use or have one? Any other scan tools that you folks would recommend?
    Thanks Brad
    The iCarSoft i906 is good for having in the car all the time / on long trips. It reads out the Volvo-specific codes. However it is limited in clearing codes. It can clear CEM codes that are not safety-related, e.g., fuel trim, EVAP, MAF, but not codes in any of the other 30-odd modules. I'm guessing your headlamp code is classified as "safety-related", and thus beyond iCarSoft's reach.

    DiCE/VIDA is the "all-in-one" Volvo software tool. The 2014D version you can get on EBay does everything except downloading modules with
    replacement software....parts lookup, repair procedures, electrical & mechanical drawings, code readouts and clears, plus live graphing.

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