12/29/2017 Body Electrical System (16) > 08-BE-004 DIAGNOSIS VOLTAGE DROP • 2009 Hyundai Azera • MotoLogic

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GroupTechnical ServiceELECTRICALBulletin Number

08-BE-004

DateSubjectJUNE, 2008DIAGNOSIS VOLTAGE DROP

ModelALL

[X] PARTS MANAGER [X] TECHNICIANCIRCULATE TO: [ ] GENERAL MANAGER

[X] SERVICE ADVISOR [X] SERVICE MANAGER [X] WARRANTY MGR [ ] SALES MANAGER

DESCRIPTION:

Excessive resistance in high amperage circuits may result in one or more of thefollowing symptoms:

• Blower motor speed slow down and the radio cycles off and on.

• Intermittent headlight dimming during deceleration.

This bulletin provides the procedure to diagnose and repair the vehicle wiring grounds.

SERVICE PROCEDURE:

1. Start vehicle and turn on headlights (including high beam), air conditioning, and setthe blower to maximum speed.

2. Using a known good digital volt-ohm meter (DVOM), perform a voltage drop test onthe positive battery cable, paying particular attention to the leads to the EngineRoom Junction Box (refer to photo on page 2). If the voltage drop is more than 0.2volts on any of the leads, replace the Positive Battery Cable.

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12/29/2017 Body Electrical System (16) > 08-BE-004 DIAGNOSIS VOLTAGE DROP • 2009 Hyundai Azera • MotoLogic

https://www.motologic.com/car/528c2e0e77b806c04e9e7158d44494a5/article/9dc6dab7b270d13463696c1f390fae29-1?returnPath=%2Fcar%2F528c2… 3/5

POSITIVE BATTERY CABLE TEST CONFIGURATION

3. Perform voltage drop test on the negative battery cable. If the voltage drop is morethan 0.2 volts, repair or replace the negative battery cable.

NEGATIVE BATTERY CABLE TEST CONFIGURATION

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12/29/2017 Body Electrical System (16) > 08-BE-004 DIAGNOSIS VOLTAGE DROP • 2009 Hyundai Azera • MotoLogic

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GroupTechnical ServiceELECTRICALBulletin

Number08-BE-004

4. Perform voltage drop check to all body ground locations in the engine compartment.Check with the positive volt meter lead on the negative battery terminal and thenegative lead to the ground locations. If the voltage drop is more than 0.2 volts,repair or replace the body ground terminal and/or wiring assembly.

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12/29/2017 Body Electrical System (16) > 08-BE-004 DIAGNOSIS VOLTAGE DROP • 2009 Hyundai Azera • MotoLogic

https://www.motologic.com/car/528c2e0e77b806c04e9e7158d44494a5/article/9dc6dab7b270d13463696c1f390fae29-1?returnPath=%2Fcar%2F528c2… 5/5

5. Perform voltage drop check to all Engine and Transmission ground straps. Checkwith the voltmeter positive lead on one end of the strap and the negative lead to theopposite end. If the voltage drop is more than 0.2 volts, repair or replace theground terminal and/or ground strap.

NOTE: When repairing grounds, chase the bolt threads with appropriate tool,clean the harness terminal and apply a star washer between the bolt andthe terminal eyelet. Do not sand or grind paint from the body.

WARRANTY INFORMATION:

Normal warranty operation code and times apply.

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