100%(1)1 out of 1 people found this document helpful
This preview shows page 25 - 28 out of 104 pages.
Voltage:at 0_C (32_F) : 2.8 ~3.2 Vat 40_C (104_F) : 1.8 ~2.2 Vat 70_C (158_F) : 1.3 ~1.5 VHINT:As the temperature increases, the voltage de-creases.Proceed to next circuit inspection shown on matrix chart(See page AC–26). However, if Diagnostic trouble code14 is displayed, check and replace A/C control assembly.2Check engine coolant temperature sensor.COKP1.Remove heater unit (See page AC–83).2.Remove engine coolant temperature sensor.Measure resistance between terminals 1 and 3 of en-gine coolant temperature sensor connector at eachtemperature.Resistance:at 0_C (32_F) : 16.5 ~17.5 kWat 40_C (104_F) : 2.4 ~2.8 kWat 70_C (158_F) : 0.7 ~1.0 kWHINT:As the temperature increases, the resistancedecreases.Replace engine coolant temperature sensor.3Check harness and connector between air conditioning control assembly and engine coolanttemperature sensor (See page IN–29).Repair or replace harness or connector.Check and replace A/C control assembly.–AIR CONDITIONING SYSTEMTROUBLESHOOTINGAC–35
DTC21Solar Sensor CircuitCIRCUIT DESCRIPTIONA photo diode in the solar sensor detects solarradiation and sends signals to the air condition-ing control assembly.DTC No.DTC Detecting ConditionTrouble Area21Open or short in solar sensor circuit.(Please note that display of diagnostic troublecode 21 is not abnormal when the sensor is notreceiving solar radiation.)SSolar sensor.SHarness or connector between solar sensor and A/Ccontrol assembly.SA/C control assembly.WIRING DIAGRAMAC–36–AIR CONDITIONING SYSTEMTROUBLESHOOTING
NGOKOKNGOKNGINSPECTION PROCEDURE1Check voltage between terminals SG and TS of air conditioning control assembly connector.COKPRemove air conditioning control assembly with connec-tors still connected.1.Turn ignition switch ON.2.Measure voltage between terminals SG and TS ofair conditioning control assembly connector whenthe solar sensor is subjected to an electric light, andwhen the sensor is covered by a cloth.HINT:As the inspection light is moved away from thesensor, the voltage increases.Proceed to next circuit inspection shown on matrix chart(See page AC–26). However, if Diagnostic trouble code21 is displayed, check and replace A/C control assembly.2Check solar sensor.COKPHintPOKHint1.Remove glove compartment assembly.2.Remove solar sensor.1.Cover the sensor by a cloth.2.Measure resistance between terminals 1 and 2 ofsolar sensor connector.Connect positive Īlead of ohmmeter to terminal 1 andnegative lead to terminal 2 of the solar sensor.Resistance:RW(no continuity)1.Remove the cloth from the solar sensor and subjectthe sensor to electric light.2.Measure resistance.Resistance:Approx. 4 kW(continuity)As the electric light is moved away from the sensor, theresistance increases.Replace solar sensor.