Blower Motor Noise - Cover Installation
Reference:ITB99-050A
Classification:
HA99-005A
Date:
February 10, 2000
TITLE:
INFINITI BLOWER MOTOR NOISE - COVER INSTALLATION
This amended version of ITB99-050 updates the Service and Claims Information Sections. Please discard all paper copies of ITB99-050.
APPLIED VEHICLES:
1996-99 I30 (CA32)
2000 I30 (CA33)
1997-1999 QX4 (JR50)
1997-1999 Q45 (FY33)
1999 G20 (P11)
SERVICE INFORMATION
If a customer indicates that a light ticking or humming noise can be heard coming from the blower motor of an applied vehicle when the motor is run at low fan speeds (speed 1 or 2), a new, noise reducing blower motor cover is available (see Figure 1). The noise, if it occurs, may be very slight and, at times, difficult to hear.
Use the Service Procedure in this bulletin to evaluate the noise and determine the next step to correct the condition.
Two procedures for installing the blower motor cover are provided in this bulletin. The first procedure applies to I30, QX4, and G20 vehicles. The second procedure applies to Q45 procedure, the blower motor cover must be modified before installation.
NOTE: These are the ONLY approved repair procedures for this incident. Claims to Infiniti for the repair of this incident may be denied if the repairs are not performed exactly as outlined in this bulletin.
SERVICE PROCEDURE
Run the blower motor at low fan speed (speed 1 or 2) and evaluate the noise, if any. Decide which of the two following categories the noise falls under:
1. Loud rattle, clatter, jolt, or flap: Go to the procedure for Blower Case Cleaning.
2. Light ticking or humming noise: Complete the vehicle specific steps to Install Blower Motor Cover
Install Blower Motor Cover For I30, QX4, and G20 Vehicles:
NOTE: It is not necessary to remove the blower motor when installing the blower motor cover.
1. Remove the instrument panel lower cover (if equipped).
2. Disconnect the blower motor harness connector.
3. Clean the blower motor housing to ensure adhesive strips on the back of the blower motor cover will stick (standard window cleaner or other all-purpose cleaner can be used).
NOTE: Be sure to remove all residual film from the blower motor housing that may have been left by cleaning.
4. Peel the protective coverings from the adhesive strips on the blower motor cover (see Figure 1 for adhesive strip locations).
5. Install the blower motor cover onto the motor bracket (see Figure 2).
6. Re-connect the blower motor harness connector.
7. Re-attach the instrument panel lower cover (if equipped).
8. Run the blower motor at low fan speed. Confirm that the blower motor is working properly and the noise is eliminated or reduced to an acceptable level.
Install Blower Motor Cover For Q45 Vehicles:
NOTE: It is not necessary to remove the blower motor when installing the blower motor cover.
1. Remove the instrument panel lower cover (if equipped).
2. Disconnect the blower motor harness connector.
3. Clean the blower motor housing to ensure adhesive strips on the back of the blower motor cover will stick (standard window cleaner or other all-purpose cleaner can be used).
NOTE: Be sure to remove all residual film from the blower motor housing that may have been left by cleaning.
4. Cut away and remove a 25 mm (1 inch) section of the blower motor cover's plastic covering and the adhesive strip material parallel to the area you cut on the cover (see Figure 3).
5. Peel the protective coverings from the adhesive strips on the blower motor cover (see Figure 1 for adhesive strip locations).
6. Install the blower motor cover onto the motor bracket (see Figure 4). Route the blower motor harness between the blower motor and the cover, along the area you cut away in Step 4.
7. Re-attach the instrument panel lower cover (if equipped).
8. Run the blower motor at low fan speed. Confirm that the blower motor is working properly and the noise is eliminated or reduced to an acceptable level.
Blower Case Cleaning:
1. Remove blower motor unit from the blower case.
2. Remove all foreign material from the case.
3. Re-install the blower motor unit.
4. Run the blower motor at low fan speed (speed 1 or 2) and re-evaluate the noise:
A. If the noise is gone, no further action is needed.
B. If the noise is still a loud rattle, clatter, jolt, or flap, investigate other causes for the noise and repair as needed.
C. If the noise is a light ticking or humming, go to and complete the vehicle specific procedure Install Blower Motor Cover (Pages 2-3 for I30, QX4, and G20 vehicles; Pages 3-5 for Q45 vehicles).
PARTS INFORMATION
CLAIMS INFORMATION
NOTE: These are the ONLY approved repair procedures for this incident. Claims to Infiniti for the repair of this incident may be denied if the repairs are not performed exactly as outlined in this bulletin.
Submit a Primary Failed Part (PP) line using claims coding as shown.