Test Steps Description

CF1 - DISCONNECT COOLANT TEMPERATURE SWITCH
CF2 - GROUND CFR
CF3 - CHECK POWER TO RELAY
CF4 - CHECK RELAY OPERATION
CF5 - JUMP POWER TO MOTOR
CF6 - JUMP ACROSS RESISTOR
HS1 - CHECK HIGH SPEED FAN SWITCH
HS2 - GROUND RELAY
HS3 - CHECK POWER TO RELAY
HS4 - CHECK RELAY OPERATION
HS5 - CHECK RESISTOR
EC1 - DISCONNECT CTS
EC2 - DISCONNECT ECA
EC3 - CHECK CFR BK/BL FOR SHORTS
EC4 - CHECK RELAY OPERATION
EC5 - DISCONNECT HSFS
EC6 - CHECK HSF RELAY BL/R FOR SHORTS
EC7 - CHECK HSF RELAY OPERATION
KF1 - SERVICE CODE 83/88: CHECK FOR IGNITION START/RUN CIRCUIT VOLTAGE AT HEDF/EDF RELAY
KF2 - ENTER OUTPUT STATE CHECK (REFER TO QUICK TEST APPENDIX)
KF3 - CHECK FOR EDF/HEDF CIRCUIT CYCLING
KF4 - CHECK CONTINUITY OF EDF/HEDF CIRCUIT
KF5 - CHECK EDF/HEDF CIRCUIT FOR SHORT TO POWER
KF6 - CHECK EDF/HEDF CIRCUIT FOR SHORT TO GROUND
K10 - LOW SPEED (EDF) AND OR HIGH SPEED (HEDF) COOLING FAN DOES NOT OPERATE: CHECK FOR VOLTAGE TO EDF RELAY
K11 - CHECK FOR VOLTAGE TO HEDF RELAY
K12 - CHECK CONTINUITY BETWEEN EDF AND HEDF RELAYS
K13 - CHECK CIRCUITS FROM EDF RELAY TO FAN
K14 - CHECK EDF POWER-TO-FAN CIRCUIT CONTINUITY
K15 - CHECK COOLING FAN GROUND CIRCUIT
K16 - CHECK CIRCUITS FROM HEDF RELAY TO FAN
K17 - VERIFY CONTINUITY OF CIRCUITS FROM A/C HIGH PRESSURE SWITCH
K18 - CHECK HEDF POWER-TO-FAN VOLTAGE AT FAN WITH A/C HP SWITCH GROUNDED
K19 - CHECK HEDF POWER-TO-FAN CIRCUIT CONTINUITY
K25 - LOW SPEED (EDF) OR HIGH SPEED (HEDF) COOLING FAN ALWAYS ON: VERIFY IGNITION RELAY IS OPENING
K26 - CHECK FOR EDF RELAY ALWAYS CLOSED
K27 - CHECK HEDF RELAY
K28 - CHECK EDF POWER-TO-FAN CIRCUIT FOR SHORT TO POWER