A/C - Blower Motor Inoperative/Won't Shut OFF When Cold
TSB SB08-12-S001Issue Date: February 2008
Blower Motor Inoperative Or May Not Shut Off In Extremely Low Ambient Temperature Conditions
Affected Vehicles:
2003-2007 Isuzu Ascender
Service Information
Condition:
Some customers may comment that the blower motor is inoperative or continues to run after the vehicle has been shut off.
Possible Cause:
These conditions may be caused by a blower motor control module failure. This failure may occur when the vehicle is operated in ambient temperature conditions of -23°C (-10°F) or below.
Correction:
Replace blower motor control module.
Service Procedure
IMPORTANT:
Replace the blower motor control module if the vehicle experienced a blower motor control module failure in extremely cold ambient temperature conditions.
Technicians are to replace the blower motor control module also called the Linear Power Module (LPM). Refer to either the Blower Motor Control Processor Replacement or Blower Motor Processor Replacement-Auxiliary procedures in the Service Manual. After replacement of the blower motor control module the customer may notice a slightly higher than expected blower motor speed at any of the blower speed settings.
Parts Information
Always refer to AIPDN publications for the most current parts information.
Warranty Claim Information
Always refer to the Isuzu Service Policy Procedure Manual for specific details on warranty coverage and policies. Reference published Labor Time Guide for claim processing, if applicable.
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