Testing Thunderbird V6-232 38L SC Compressor Clutch Relay: Steps
Compressor Clutch Relay: Testing and Inspection
Test Steps Description
X1 -
CHECK BATTERY VOLTAGE
X2 -
CHECK BATTERY GROUND
X3 -
GROUND FAULT ISOLATION
X4 -
PROCESSOR GROUND FAULT ISOLATION
X5 -
CHECK SIG RTN CIRCUIT CONTINUITY
X6 -
MEASURE VOLTAGE AND GROUND TO IRCM
X7 -
CHECK KEY POWER TO IRCM
X8 -
CHECK VPWR CIRCUIT CONTINUITY
X9 -
MEASURE CONTINUITY OF POWER GROUND TO IRCM
X11 -
CHECK POWER-TO-PUMP(S) CIRCUIT VOLTAGE
X12 -
CHECK POWER-TO-PUMP(S) CIRCUIT CONTINUITY
X13 -
CHECK POWER TO IRCM
X14 -
CHECK POWER-TO-PUMP(S) CIRCUIT FOR SHORTS TO POWER
X15 -
SERVICE CODE 87/83: CHECK CONTINUITY OF FUEL PUMP CIRCUIT
X16 -
CHECK APPROPRIATE FUEL PUMP CIRCUIT FOR SHORTS TO POWER AND GROUND
X17 -
CHECK FUEL PUMP RELAY COIL RESISTANCE
X18 -
NO HIGH OR LOW FAN
X19 -
CHECK FAN MOTOR OPERATION CHECK FAN MOTOR OPERATION
X20 -
CHECK FAN MOTOR OPERATION CHECK FAN MOTOR OPERATION
X21 -
MEASURE BATTERY VOLTAGE SUPPLY AT FAN-BYPASSING INTEGRATED CONTROLLER
X22 -
VERIFY COOLING FAN GROUND
X23 -
MEASURE BATTERY VOLTAGE SUPPLY AT FAN-BYPASSING IRCM
X25 -
CHECK FAN RUNNING MODE (LOW)
X26 -
JUMPER HIGH ELECTRIC-DRIVE SIGNAL (HEDF) TO GROUND
X27 -
CHECK ECT SENSOR
X30 -
SERVICE CODE 83/563 CHECK HEDF RELAY RESISTANCE
X31 -
CHECK HEDF CIRCUIT CONTINUITY
X32 -
CHECK HEDF CIRCUIT FOR SHORTS TO GROUND
X33 -
CHECK HEDF CIRCUIT FOR SHORTS TO POWER
X35 -
LOW SPEED FAN ALWAYS ON: CHECK EDF CIRCUIT CONTINUITY
X36 -
CHECK EDF CIRCUIT FOR SHORT TO POWER
X37 -
EDF CIRCUIT FAULT ISOLATION
X40 -
CHECK FAN VOLTAGE
X41 -
CHECK FAN MOTOR
X42 -
CHECK FAN RUNNING MODE
X43 -
MEASURE BATTERY VOLTAGE SUPPLY AT FAN-BYPASSING INTEGRATED CONTROLLER
X44 -
CHECK EDF CIRCUIT FOR SHORT TO GROUND
X45 -
VERIFY COOLING FAN GROUND
X46 -
CHECK ECT SENSOR
X50 -
CHECK FOR VOLTAGE AT A/C CLUTCH
X51 -
CHECK FOR CONTINUITY FROM INTEGRATED CONTROLLER TO A/C CLUTCH
X52 -
ENTER OUTPUT STATE CHECK (REFER TO QUICK TEST APPENDIX)
X53 -
CHECK WAC OUTPUT FOR PROPER ELECTRICAL OPERATION
X54 -
CHECK FOR VOLTAGE AT A/C CLUTCH SWITCH
X55 -
CHECK CONTINUITY OF ACCS TO INTEGRATED CONTROLLER
X56 -
CHECK CONTINUITY OF ACCS CIRCUIT
X57 -
CHECK CONTINUITY IN WAC TO INTEGRATED CONTROLLER CIRCUIT
X58 -
CHECK WAC CIRCUIT FOR SHORTS TO GROUND
X59 -
CHECK WAC CIRCUIT FOR SHORTS TO POWER
X60 -
CHECK FOR VOLTAGE AT A/C CLUTCH
X80 -
SERVICE CODE 88: CHECK EDF PROCESSOR SIGNAL TO INTEGRATED CONTROLLER FOR SHORTS TO GROUND
X81 -
CHECK FAN RUNNING MODE
X82 -
FAN ALWAYS ON WITH 88: CHECK EDF PROCESSOR SIGNAL TO INTEGRATED CONTROLLER FOR OPEN CIRCUIT
X83 -
CHECK EDF CIRCUIT FOR SHORTS TO POWER
X84 -
CHECK EDF SHORT TO GROUND
X90 -
SERVICE CODE 95: CHECK INERTIA SWITCH
X91 -
VERIFY THAT FUEL PUMP IS OFF
X92 -
CHECK FOR FUEL PUMP RELAY ALWAYS CLOSED
X93 -
CHECK CONTINUITY OF FPM CIRCUIT
X94 -
CHECK FOR CONTINUITY BETWEEN FPM CIRCUIT AND GROUND
X95 -
SERVICE CODE 59 OR 96: CHECK CONTINUITY OF POWER-TO-PUMP CIRCUIT
X96 -
VERIFY FUEL PUMP OPERATION
X100 - CONTINUOUS MEMORY CODE 95: CHECK EEC-IV HARNESS