tsb 09-be-023 (z01 diode)

7/14/2019 TSB 09-BE-023 (Z01 diode)

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Technical Service

Bulletin

Subject

Group

Number

Date

Model

CIRCULATE TO: [ ] GENERAL MANAGER

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

[X] PARTS MANAGER [X] TECHNICIAN

BODY ELECTRICAL

09-BE-023

SEPTEMBER, 2009

GENESIS (SEDAN)

STOP LAMP Z01 DIODE INSPECTION PROCEDURE

This bu lletin supercedes TSB 09-BR-002. In this bulletin, there is a TSB group changefrom Brake System (BR) to Body Electrical System (BE).

DESCRIPTION:

Some Genesis (Sedan BH) vehicles may experience the stop lamps blinking on and off evenwhen the brakes are not applied. If the Z01 diode is suspected as the cause of the stop lamp

malfunction, the Z01 diode must be inspected according to the procedure below. If there is notrouble with the Z01 diode after inspection, carry out other necessary repairs and DO NOTreplace the Z01 diode.

Genesis Sedan (BH) stop lamp-related wiring diagrams:

AFFECTED VEHICLE INFORMATION:

Model: Genesis (Sedan BH)

Z01 diode location: under the lower crash pad(driver’s side)

7/14/2019 TSB 09-BE-023 (Z01 diode)


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PARTS INFORMATION:

SERVICE PROCEDURE:

Z01 diode inspection procedure

1. Locate the Z01 diode, under the driver'sside lower crash pad.

2. Check if the Z01 diode is securelyconnected to the diode connector (A).

Part Name Part No. Figure

Diode 91789-33000

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Technical Service

Bulletin

Group

Number

3. Measure the voltage across the Z01diode in the car by probing from back of

the connector and check if the readingis between 0.5V and 0.7V.

- Normal vol tage range: 0.5V~0.7VIf the voltage is beyond the specified range,the Z01 diode must be replaced. Once aZ01 diode is replaced, make sure the diodeis securely connected and all wires arecovered appropriately.

BODY ELECTRICAL

09-BE-023

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4. In order to remove diode, gently removethe Z01 diode from the diode connectoraccording to the order shown inpictures to the right. Gently raise thelatching clip and pull the connectoroutwards as shown in the picture.

WARRANTY INFORMATION:

Normal warranty applies.

tsb 09-be-023 (z01 diode)

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