Test Steps Description

EC1 - CHECK FUSES
EC2 - CHECK SYSTEM
EC3 - CHECK FOR SHORTS TO GROUND
EC4 - CHECK SUPPLY TO COOLING FAN MOTOR
EC5 - CHECK SUPPLY TO A/C RELAY (A/C ONLY)
EC6 - CHECK THE LEAD TO A/C CONTROL AMPLIFIER (A/C ONLY)
EC7 - CHECK A/C RELAY (A/C ONLY)
EC8 - CHECK LEAD BETWEEN A/C RELAY AND COOLING FAN RELAY (A/C ONLY)
EC9 - CHECK LEAD BETWEEN A/C RELAY AND ECA (A/C ONLY)
EC10 - CHECK LEAD BETWEEN A/C RELAY RELAY AND COMPRESSOR CLUTCH (A/C ONLY)
EC11 - CHECK SUPPLY TO COOLING FAN RELAY (NON-A/C ONLY)
EC12 - CHECK COOLING FAN MOTOR
EC13 - CHECK LEAD BETWEEN COOLING FAN RELAY AND COOLING FAN MOTOR
EC14 - CHECK COOLING FAN RELAY GROUND
EC15 - CHECK COOLING FAN RELAY
EC16 - CHECK LEAD BETWEEN COOLING FAN RELAY AND COOLING FAN SWITCH
EC17 - FAN SWITCH FUNCTION
EC18 - CHECK SYSTEM FOR OPERATION WHEN A/C IS TURNED ON (A/C ONLY)