Blower controls – fault diagnosis

BLOWER CONTROLS – FAULT DIAGNOSIS

TROUBLESHOOTING HINTS

Check Maxi-Fuse
MF2 and Fuse F3 of the 4. Engine Compartment Fuse Box (P125). 5. Check Fuse F18 of the Fascia Fuse Box (P126). 6. If the Front Blower Motor (M101) does not stop running with the Fan Speed Switch (X179) in Position 0, replace the Fan Speed Switch (X179). 7. If fresh air does not enter the vehicle cabin with the Air Supply Selector Switch (X180) in the Outside Air position, check the Air Recirculation Solenoid (K123) and linkage for sticking or binding. 8. If the blower motor(s) operate with the ignition key removed, replace the Ignition Load Relay (K127). 9. If the blower motor(s) run but not at the speed indicated by the Fan Speed Switch (X179), replace the Fan Speed Switch.

SYSTEM DIAGNOSIS

1. If the Front Blower Motor (M101) does not run at any speed, do Test A. 2. If the Front Blower Motor (M101) runs in some but not all Fan Speed Switch (X179) positions, do Test B. 3. If the Air Supply Selector Switch (X180) does not allow the driver to change between recirculation and fresh air modes, do Test C. 4. With the engine running and the Fan Speed Switch (X179) in position III, put the Air Supply Selector Switch (X180) to Recirculation mode. Place a piece of paper in front of the fresh air intake vents on the vehicle hood. If the paper is drawn toward the vents, do Test C. 5. With the engine running and the Fan Speed Switch (X179) in position III, put the Air Supply Selector Switch (X180) to A/C mode. Place a piece of paper in front of the exterior fresh air intake vents. If the paper is drawn toward the intake, do Test C.

E L E C T R I C A L

BLOWER CONTROLS

T R O U B L E S H O O T I N G M A N U A L

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