is controlled from level l to level 7 equally as in button operation and running logic. In turning on IG, blower relay is ON and
voltage of 0.1 to 1.4V is transferred from FATC connector A-4 terminal to base source of power TR according to FATC
control (selectable from level 1 to level 7). At this time, voltage of blower motor's both ends is determined according to
collector voltage of FATC connector A-5 terminal. If FATC is controlled in level 7, GND(0V) is supplied for FATC
connectorA-18 terminal and high blower relay is driven.
ERROR DIAGNOSTICS
Symptoms Causes How to check
Amount of wind is wrong at manual
selection of blower
Power TR error Check voltage of blower motor's both ends.
(Level 1: 3.8V, Level 2: 5.2V, Level 3: 6.5V,
Level 4: 7.9V, Level 5: 9.2V, Level 6: 10.6V,
Level 7: 13.5V [high-relay operation])
Measure voltage of each terminal and if there is
difference more than ±0.6V, check power TR.
Blower wind is discharged despite
pressing OFF switch
Power TR error Power TR change
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