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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 55 (Engine Cooling System (HEV)) >> Cooling Fan (Engine) >> Description and Operation >> Description

Description and Operation: Description

WARNING: This page is about a different variant/trim than selected.

Control the cooling motor voltage in according to the duty (300Hz) of ECM.

[ECU PWM Input Signal (SI: 300Hz)]

Fig 1: ECU PWM Input Signal Pattern
G10588354Courtesy of HYUNDAI MOTOR AMERICA
COOLING MOTOR VOLTAGE

SI Duty Motor Voltage (V) -
10% 0 -
30% 4.1 ± 0.65
60% 8.2 ± 0.66
70% 9.57 ± 0.67
90% 12.5 -
COOLING FAN OPERATION CONDITION

A/C Switch A/C Pressure (Kgf/cm2 G) Vehicle Speed (Km/h) Coolant Temp (°C) Duty (%)
OFF - V < 45 98 above 35
45 V < 80 101 above 40
80 V 105 above 80
ON A/C Pressure < 6 ALL 105 above 90
6 A/C Pressure < 12 V < 45 82 above 30
45 V < 80 96 above 40
80 V 96 above 60
12 A/C Pressure < 15.5 V < 45 101 above 70
45 V < 80 -30 above 40
80 V 82 above 60
15.5 A/C Pressure V = 0 -30 above 60
0 < V -30 above 90