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MODEL SELECTION INDEX
VT SERIES I - COMMODORE, CALAIS SERVICE INFORMATION
SECTION 2F - ELECTRONIC CLIMATE CONTROL - DIAGNOSTICS
1. DIAGNOSTICS
1.1 TECH 2 DIAGNOSTICS
1.2 TECH 2 TEST MODES AND DISPLAYS FOR ECC DIAGNOSIS
F0: NORMAL MODE
F1: DIAGNOSTIC TROUBLE CODES (DTC)
F2: DATA DISPLAY
F3: SNAPSHOT
F4: MISCELLANEOUS TEST
F5: PROGRAM
1.3. SENSOR ACCURACY TESTING
1.4 DIAGNOSTIC CHARTS
INTRODUCTION
INTERMITTENTS
CHART A - DIAGNOSTIC CIRCUIT CHECK
CHART B - ECC SYSTEM DOES NOT POWER UP
DTC 13 - AMBIENT AIR TEMPERATURE SENSOR (ATS) - SIGNAL VOLTAGE HIGH
DTC 14 - AMBIENT AIR TEMPERATURE SENSOR (ATS) - SIGNAL VOLTAGE LOW
DTC 15 - IN-CAR TEMPERATURE SENSOR (ITS) - SIGNAL VOLTAGE HIGH
DTC 16 - IN-CAR TEMPERATURE SENSOR (IAT) - SIGNAL VOLTAGE LOW
DTC 17 - EVAPORATOR AIR TEMPERATURE SENSOR (ETS) - SIGNAL VOLTAGE HIGH
DTC 18 - EVAPORATOR AIR TEMPERATURE SENSOR (ETS) - SIGNAL VOLTAGE LOW
DTC 19 - SUN LOAD SENSOR FAULT
DTC 21 - AIR MIX MOTOR DRIVERS SIDE (SZ/DZ)
DTC 24 - AIR MIX MOTOR PASSENGER SIDE (DZ)
DTC 36 - SERIAL DATA COMMUNICATIONS ERROR
DTC 37 - ECC CONTROL MODULE - INTERNAL FAILURE
DTC 38 - EEPROM CHECKSUM FAILURE
