HVAC 18 ii) BLOWER RESISTER AND LINEAR POWER MODULE (LPM) The speed of the blower can be controlled by employing either a Blower resister or a Liner Power Module (LPM). In this vehicle the blower resister is used in models with manual HVAC and LPM is used in models with FATC. BLOWER RESISTER A blower resister used in this vehicle is for a fourspeed control of blower speed. This is achieved by having a combination of three different resistances. The blower resister is placed in the intake air flow to allow it to dissipate heat freely. It is located on the lower side of the HVAC unit to the right of the blower. CIRCUIT DIAGRAM PIN OUT PIN NO DESCRIPTION A Medium Low Resistance (ML) B Medium High Resistance (MH) C High Speed (directly engaged) D Low speed resistance INSPECTION Measure the current at the harness side connecter at 4 speeds by rotating the blower switch. The current measurement should as per the table below. The resistance can also be checked. For resistance values refer circuit diagram of blower resistor.
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