HVAC - Loss of Blower Speeds Except For Low

2006 Service Bulletins

TSB SB06-12-S004

Loss of Blower Motor Speeds Except For Low Speed or Inoperative (This Bulletin Supersedes SB06-12-S003)

ISSUE DATE: NOVEMBER 2006

Affected Vehicles

2004-2006 Isuzu Ascender (US/UT) with HVAC System AC Front, Manual Temp Control, or Heater Only

Service Information

This bulletin is being updated to change the Service Procedure.

Condition

Some customers may comment that the blower will only work on low speeds or has become inoperative.

Correction

Replace blower motor resistor and resistor module connector.

Service Procedure

Replace The Blower Motor Resistor And Resistor Module Connector.

Replace the blower motor resistor and module connector using the following procedure:

1. Remove the blower fuse 35 located in the Underhood Fuse Block.

2. Lower the hush panel or close-out panel enough to gain access to the resistor module connector.

3. Disconnect the connector from the resistor module.

4. Remove the tape from the wiring harness to expose the wiring.





5. Cut the wires back far enough from the connector to eliminate any melted insulation on the wire.

Tip

Use the old connector as a map for soldering the wires for the new connector.Be sure to use the correct crimping tool from the Kent Moore terminal repair kit J 38125. Use only Duraseal splice sleeves. Other splice sleeves may not protect the splice from moisture or provide a good electrical connection.

6. Install the new connector. Use the yellow splice sleeves provided with the connector.

7. Install new blower motor resistor.

8. Reinstall the fuse or connector block. Test the blower motor to make sure all speeds are functional.

9. Reinstall the hush panel/close-out panel.





Parts Information

Warranty Claim Information





Use the labor operation shown.

NOTE:

1. Labor Time includes administrative time allowance.

2. In formation released on paper and electronic format prior to bulletin release cannot be updated. For the most current and up to date information refer to the website

3. Always refer to the Isuzu Service Policy Procedure Manual for specific details on warranty coverage and policies.





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