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Air Conditioning System (Diagnostic Codes & Circuit Tests): Other Scion tC II рестайлинг

Automatic HVAC System ~10154 words

PROCEDURE

  1. CHECK CAN COMMUNICATION SYSTEM Use the Techstream to check if the CAN communication system is functioning normally. Refer to «DIAGNOSIS SYSTEM [05/2013 - 01/2014]»(ref-615285-S11042255172014050900000) . OK CAN DTC is not output. NG --> See step 11 OK: Go to next step
  2. READ VALUE USING TECHSTREAM (AMBIENT TEMP SENSOR) Use the Data List to check if the thermistor assembly is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ambient Temp Sensor Thermistor assembly / Min: -23.3°C (-9.94°F) Max: 65.95°C (150.71°F) Actual ambient temperature displayed Open in the circuit: -23.3°C (-9.94°F). Short in the circuit: 65.95°C (150.71°F). The combination meter assembly sends the ambient temperature signal to the air conditioning amplifier assembly via CAN communication. OK The display is as specified in the normal condition column. RESULT Result Proceed to OK (When troubleshooting according to Problem Symptoms Table) A OK (When troubleshooting according to DTC) B NG C B --> See step 8 C --> See step 3 A --> See step 10
  3. READ VALUE USING TECHSTREAM (AMBIENT TEMPERATURE) Use the Data List to check if the thermistor assembly is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . COMBINATION METER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ambient Temperature Ambient temperature / Min: -40.0°C (-40.0°F) Max: 87.5°C (189.5°F) Actual ambient temperature displayed Open in the circuit: -40.0°C (-40.0°F). Short in the circuit: 87.5°C (189.5°F). OK The display is as specified in the normal condition column. NG --> See step 6 OK: Go to next step
  4. REPLACE COMBINATION METER ASSEMBLY Temporarily replace the combination meter assembly with a new or normally functioning one. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615257-S18794010282014050900000) . NEXT: Go to next step
  5. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . Check the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . OK DTC B1412 is not output. NG --> See step 8 OK --> END (COMBINATION METER ASSEMBLY IS FAULTY)
  6. INSPECT THERMISTOR ASSEMBLY Remove the thermistor assembly. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S01252773652014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 10°C (50°F) 3.00 to 3.73 kohms 15°C (59°F) 2.45 to 2.88 kohms 20°C (68°F) 1.95 to 2.30 kohms 25°C (77°F) 1.60 to 1.80 kohms 30°C (86°F) 1.28 to 1.47 kohms 35°C (95°F) 1.00 to 1.22 kohms 40°C (104°F) 0.80 to 1.00 kohms 45°C (113°F) 0.65 to 0.85 kohms 50°C (122°F) 0.50 to 0.70 kohms 55°C (131°F) 0.44 to 0.60 kohms 60°C (140°F) 0.36 to 0.50 kohms TEXT IN ILLUSTRATION *a Sensing Portion *b Resistance *c Allowable Range *d Temperature NOTE: Even slightly touching the thermistor assembly may change the resistance value. Be sure to hold the connector of the thermistor assembly. When measuring, the thermistor assembly temperature must be the same as the ambient temperature. HINT: As the temperature increases, the resistance decreases (refer to the graph). NG --> See step 9 OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (THERMISTOR ASSEMBLY - COMBINATION METER ASSEMBLY) Disconnect the A18 thermistor connector. Disconnect the C50 meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A18-1 - C50-13 (TEMP) Always Below 1 ohms A18-2 - C50-12 (TX1+) Always Below 1 ohms C50-13 (TEMP) - Body ground Always 10 kohms or higher C50-12 (TX1+) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
  8. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)
  9. REPLACE THERMISTOR ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S01252773652014050900000)
  10. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [05/2013 - 01/2014]»(ref-615247-S35623382742014050900000)
  11. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSIS SYSTEM [05/2013 - 01/2014]»(ref-615285-S11042255172014050900000)
  12. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615257-S18794010282014050900000)
  1. CHECK CAN COMMUNICATION SYSTEM Use the Techstream to check if the CAN communication system is functioning normally. Refer to «DIAGNOSIS SYSTEM [01/2014 - ]»(ref-615285-S37069111882014050900000) . OK CAN DTC is not output. NG --> See step 11 OK: Go to next step
  2. READ VALUE USING TECHSTREAM (AMBIENT TEMP SENSOR) Use the Data List to check if the thermistor assembly is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ambient Temp Sensor Thermistor assembly / Min: -23.3°C (-9.94°F) Max: 65.95°C (150.71°F) Actual ambient temperature displayed Open in the circuit: -23.3°C (-9.94°F). Short in the circuit: 65.95°C (150.71°F). The combination meter assembly sends the ambient temperature signal to the air conditioning amplifier assembly via CAN communication. OK The display is as specified in the normal condition column. RESULT Result Proceed to OK (When troubleshooting according to Problem Symptoms Table) A OK (When troubleshooting according to DTC) B NG C B --> See step 8 C --> See step 3 A --> See step 10
  3. READ VALUE USING TECHSTREAM (AMBIENT TEMPERATURE) Use the Data List to check if the thermistor assembly is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . COMBINATION METER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ambient Temperature Ambient temperature / Min: -40.0°C (-40.0°F) Max: 87.5°C (189.5°F) Actual ambient temperature displayed Open in the circuit: -40.0°C (-40.0°F). Short in the circuit: 87.5°C (189.5°F). OK The display is as specified in the normal condition column. NG --> See step 6 OK: Go to next step
  4. REPLACE COMBINATION METER ASSEMBLY Temporarily replace the combination meter assembly with a new or normally functioning one. Refer to «REMOVAL [01/2014 - ]»(ref-615257-S28680240962014050900000) . NEXT: Go to next step
  5. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . Check the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . OK DTC B1412 is not output. NG --> See step 8 OK --> END (COMBINATION METER ASSEMBLY IS FAULTY)
  6. INSPECT THERMISTOR ASSEMBLY Remove the thermistor assembly. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S01252773652014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 10°C (50°F) 3.00 to 3.73 kohms 15°C (59°F) 2.45 to 2.88 kohms 20°C (68°F) 1.95 to 2.30 kohms 25°C (77°F) 1.60 to 1.80 kohms 30°C (86°F) 1.28 to 1.47 kohms 35°C (95°F) 1.00 to 1.22 kohms 40°C (104°F) 0.80 to 1.00 kohms 45°C (113°F) 0.65 to 0.85 kohms 50°C (122°F) 0.50 to 0.70 kohms 55°C (131°F) 0.44 to 0.60 kohms 60°C (140°F) 0.36 to 0.50 kohms TEXT IN ILLUSTRATION *a Sensing Portion *b Resistance *c Allowable Range *d Temperature NOTE: Even slightly touching the thermistor assembly may change the resistance value. Be sure to hold the connector of the thermistor assembly. When measuring, the thermistor assembly temperature must be the same as the ambient temperature. HINT: As the temperature increases, the resistance decreases (refer to the graph). NG --> See step 9 OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (THERMISTOR ASSEMBLY - COMBINATION METER ASSEMBLY) Disconnect the A18 thermistor connector. Disconnect the C50 meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A18-1 - C50-13 (TEMP) Always Below 1 ohms A18-2 - C50-12 (TX1+) Always Below 1 ohms C50-13 (TEMP) - Body ground Always 10 kohms or higher C50-12 (TX1+) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
  8. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)
  9. REPLACE THERMISTOR ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S01252773652014050900000)
  10. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [01/2014 - ]»(ref-615247-S15205853812014050900000)
  11. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSIS SYSTEM [01/2014 - ]»(ref-615285-S37069111882014050900000)
  12. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615257-S28680240962014050900000)
  1. READ VALUE USING TECHSTREAM (EVAPORATOR FIN THERMISTOR) Use the Data List to check if the No. 1 cooler thermistor is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Evaporator Fin Thermistor No. 1 cooler thermistor / Min.: -29.7°C (-21.46°F) Max.: 59.55°C (139.19°F) Actual evaporator temperature displayed Open in the circuit: -29.7°C (-21.46°F). Short in the circuit: 59.55°C (139.19°F). OK The display is as specified in the normal condition column. RESULT Result Proceed to OK (When troubleshooting according to problem symptoms table) A OK (When troubleshooting according to DTC) B NG C B --> See step 5 C --> See step 2 A --> See step 6
  2. INSPECT NO. 1 COOLER THERMISTOR Remove the No. 1 cooler thermistor. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S02347533212014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (+) - 2 (-) -10°C (14°F) 7.30 to 9.10 kohms -5°C (23°F) 5.65 to 6.95 kohms 0°C (32°F) 4.40 to 5.35 kohms 5°C (41°F) 3.40 to 4.15 kohms 10°C (50°F) 2.70 to 3.25 kohms 15°C (59°F) 2.14 to 2.58 kohms 20°C (68°F) 1.71 to 2.05 kohms 25°C (77°F) 1.38 to 1.64 kohms 30°C (86°F) 1.11 to 1.32 kohms TEXT IN ILLUSTRATION *a Sensing Portion *b Resistance *c Allowable Range *d Temperature NOTE: Even slightly touching the No. 1 cooler thermistor may change the resistance value. Be sure to hold the connector of the No. 1 cooler thermistor. When measuring, the No. 1 cooler thermistor temperature must be the same as the ambient temperature. HINT: As the temperature increases, the resistance decreases (refer to the graph). NG --> See step 4 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (NO. 1 COOLER THERMISTOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the C28 thermistor connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C32-22 (TE) - C28-1 (+) Always Below 1 ohms C32-23 (SG-3) - C28-2 (-) Always Below 1 ohms C32-22 (TE) - Body ground Always 10 kohms or higher C32-23 (SG-3) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
  4. REPLACE NO. 1 COOLER THERMISTOR. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S02347533212014050900000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)
  6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [01/2014 - ]»(ref-615247-S15205853812014050900000)
  1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - BATTERY) Disconnect the A12 sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A12-3 (+) - A12-1 (-) Ignition switch ON 4.75 to 5.25 V Ignition switch off Below 1 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A12-1 (-) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Conditioner Pressure Sensor) NG --> See step 4 OK: Go to next step
  2. CHECK AIR CONDITIONER PRESSURE SENSOR (SENSOR SIGNAL CIRCUIT) Remove the air conditioning amplifier assembly with its connectors still connected. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000) . Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C32-12 (PRE) - Body ground Ignition switch ON A/C switch off 0.63 to 4.72 V TEXT IN ILLUSTRATION *a Component with harness connected (Air Conditioning Amplifier Assembly) HINT: If the measured voltage is not within the normal range, there may be a malfunction in the air conditioning amplifier assembly, air conditioner pressure sensor or wire harness. It is also possible that the amount of refrigerant may not be appropriate. NG --> See step 5 OK: Go to next step
  3. CHECK AIR CONDITIONER PRESSURE SENSOR (SENSOR SIGNAL CIRCUIT) Remove the air conditioning amplifier assembly with its connectors still connected. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000) . Measure the voltage when the following conditions are met. MEASUREMENT CONDITION Item Condition Engine Speed 2000 rpm Vehicle Doors Fully open Temperature Setting Max cold Blower Speed Hi A/C Switch On Air Inlet Control Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) NOTE: If the refrigerant pressure on the high pressure side becomes extremely high during the inspection (the voltage exceeds 4.8 V), the fail-safe function stops the compressor operation. Therefore, measure the voltage before the fail-safe operation. It is necessary to measure the voltage for a certain amount of time (approximately 10 minutes) because the problem symptom may recur after a while. HINT: When the outside air temperature is low (below -1.5°C [29.3°F]), the compressor stops due to the operation of the thermistor assembly and No. 1 cooler thermistor to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition C32-12 (PRE) - Body ground Conditions in "Measurement Condition" chart above are met 0.63 to 4.72 V TEXT IN ILLUSTRATION *a Component with harness connected (Air Conditioning Amplifier Assembly) RESULT Result Proceed to OK (When troubleshooting according to problem symptoms table) A OK (When troubleshooting according to DTC) B NG C B --> See step 17 C --> See step 11 A --> See step 22
  4. CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the A12 sensor connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A12-1 (-) - C32-10 (SG-2) Always Below 1 ohms A12-3 (+) - C32-7 (S5-3) Always Below 1 ohms C32-10 (SG-2) - Body ground Always 10 kohms or higher C32-7 (S5-3) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 17
  5. CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the A12 sensor connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A12-2 (PR) - C32-12 (PRE) Always Below 1 ohms C32-12 (PRE) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK FOR AIR CONDITIONING SYSTEM LEAK Install a manifold gauge set. Recover the refrigerant from the air conditioning system using a refrigerant recovery unit. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . Evacuate the air conditioning system and check that vacuum can be maintained in it. OK Vacuum can be maintained in the air conditioning system. HINT: If vacuum cannot be maintained in the air conditioning system, refrigerant may be leaking from it. In this case, it is necessary to repair or replace the leaking part of the air conditioning system. NG --> See step 10 OK: Go to next step
  7. CHARGE REFRIGERANT Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . NEXT: Go to next step
  8. CHECK FOR DTC Check for DTCs when the following conditions are met. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . MEASUREMENT CONDITION Item Condition Engine Speed 2000 rpm Vehicle Doors Fully open Temperature Setting Max cold Blower Speed Hi A/C Switch On Air Inlet Control Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) NOTE: If the refrigerant pressure on the high pressure side becomes high, a DTC will be stored. Therefore, it is necessary to check for DTCs after a certain amount of time (approximately 10 minutes) has passed because the DTC may be stored after the air conditioning system operates for a while. HINT: When the outside air temperature is low (below -1.5°C [29.3°F]), the compressor stops due to the operation of the thermistor assembly and No. 1 cooler thermistor to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment. OK DTC B1423 is not output. NOTE: If the DTC was stored due to an insufficient or excessive amount of refrigerant, the problem may have been solved after performing the previous step. However, the root cause of insufficient refrigerant may be refrigerant leakage. Therefore, identify and repair the area where refrigerant leaks as necessary. The root cause of excessive refrigerant may be adding too much refrigerant. NG --> See step 9 OK --> END (AMOUNT OF REFRIGERANT IS INCORRECT)
  9. CHECK AIR CONDITIONER PRESSURE SENSOR Remove the air conditioning amplifier assembly with its connectors still connected. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000) . Install a manifold gauge set. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition C32-12 (PRE) - C32-10 (SG-2) Engine running Refrigerant pressure normal (below 3030 kPa [30.9 kgf/cm 2 , 439 psi] and higher than 177 kPa [1.8 kgf/cm 2 , 26 psi]) 0.63 to 4.72 V Engine running Refrigerant pressure abnormal (below 177 kPa [1.8 kgf/cm 2 , 26 psi]) Below 0.63 V Engine running Refrigerant pressure abnormal (higher than 3030 kPa [30.9 kgf/cm 2 , 439 psi]) 4.72 V or higher TEXT IN ILLUSTRATION *a Component with harness connected (Air Conditioning Amplifier Assembly) NG --> See step 18 OK --> See step 17
  10. REPAIR AIR CONDITIONING SYSTEM LEAK Identify the area where refrigerant leaks. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . Repair the identified area of the air conditioning system. Evacuate the air conditioning system. NEXT --> See step 19
  11. CHECK COOLING FAN SYSTEM Check if the cooling fan system is functioning properly. Refer to «ON-VEHICLE INSPECTION [05/2013 - ]»(ref-615280-S37945227002014050900000) . OK Cooling fan system is functioning properly. NG --> See step 23 OK: Go to next step
  12. CHARGE REFRIGERANT Use a refrigerant recovery unit to recover refrigerant. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . Evacuate the air conditioning system. Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . HINT: If refrigerant is added and the system has not been properly evacuated (insufficient vacuum time), moisture in the air remaining in the system will freeze in the expansion valve, blocking the flow on the high pressure side. Therefore, in order to confirm the problem, recover the refrigerant and properly evacuate the system. Add an appropriate amount of refrigerant, and then check for DTCs. NEXT: Go to next step
  13. CHECK FOR DTC Check for DTCs when the following conditions are met. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . MEASUREMENT CONDITION Item Condition Engine Speed 2000 rpm Vehicle Doors Fully open Temperature Setting Max cold Blower Speed Hi A/C Switch On Air Inlet Control Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) NOTE: If the refrigerant pressure on the high pressure side becomes high, a DTC will be stored. Therefore, it is necessary to check for DTCs after a certain amount of time (approximately 10 minutes) has passed because the DTC may be stored after the air conditioning system operates for a while. HINT: When the outside air temperature is low (below -1.5°C [29.3°F]), the compressor stops due to the operation of the thermistor assembly and No. 1 cooler thermistor to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment. If refrigerant is added and the system has not been properly evacuated (insufficient vacuum time), moisture in the air remaining in the system will freeze in the expansion valve, blocking the flow on the high pressure side. Therefore, in order to confirm the problem, recover the refrigerant and properly evacuate the system. Add an appropriate amount of refrigerant and check for DTCs. If the DTC is not output after this procedure, it indicates that the cooler dryer in the condenser assembly with receiver is not able to absorb moisture in the refrigerant cycle. In this case, to complete the repair, it is necessary to replace the cooler dryer. OK DTC B1423 is not output. NG --> See step 14 OK --> See step 20
  14. REPLACE COOLER EXPANSION VALVE Temporarily replace the cooler expansion valve with a new or normally functioning one. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615270-S27485853152014050900000) . HINT: Replace the cooler expansion valve with a new or normally functioning one because the cooler expansion valve is either stuck or clogged. NEXT: Go to next step
  15. CHARGE REFRIGERANT Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . NEXT: Go to next step
  16. CHECK FOR DTC Check for DTCs when the following conditions are met. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . MEASUREMENT CONDITION Item Condition Engine Speed 2000 rpm Vehicle Doors Fully open Temperature Setting Max cold Blower Speed Hi A/C Switch On Air Inlet Control Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) NOTE: If the refrigerant pressure on the high pressure side becomes high, a DTC will be stored. Therefore, it is necessary to check for DTCs after a certain amount of time (approximately 10 minutes) has passed because the DTC may be stored after the air conditioning system operates for a while. HINT: When the outside air temperature is low (below -1.5°C [29.3°F]), the compressor stops due to the operation of the thermistor assembly and No. 1 cooler thermistor to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment. If the refrigerant pressure is not normal after replacing the expansion valve with a new or normally functioning one, the cooler condenser assembly or pipes may be clogged due to dirt, dust or other contaminants. In this case, clean or replace the condenser assembly with receiver or the pipes. OK DTC B1423 is not output. NG --> See step 21 OK --> END (COOLER EXPANSION VALVE IS FAULTY)
  17. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)
  18. REPLACE AIR CONDITIONER PRESSURE SENSOR. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S12384390572014050900000)
  19. CHARGE REFRIGERANT. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000)
  20. REPLACE COOLER DRYER. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S42770599982014050900000)
  21. CLEAN OR REPLACE CONDENSER ASSEMBLY WITH RECEIVER OR PIPES. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S42770599982014050900000)
  22. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [05/2013 - 01/2014]»(ref-615247-S35623382742014050900000)
  23. GO TO COOLING FAN SYSTEM. Refer to «ON-VEHICLE INSPECTION [05/2013 - ]»(ref-615280-S37945227002014050900000)
  1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - BATTERY) Disconnect the A12 sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A12-3 (+) - A12-1 (-) Ignition switch ON 4.75 to 5.25 V Ignition switch off Below 1 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A12-1 (-) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Conditioner Pressure Sensor) NG --> See step 4 OK: Go to next step
  2. CHECK AIR CONDITIONER PRESSURE SENSOR (SENSOR SIGNAL CIRCUIT) Remove the air conditioning amplifier assembly with its connectors still connected. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000) . Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C32-12 (PRE) - Body ground Ignition switch ON A/C switch off 0.63 to 4.72 V TEXT IN ILLUSTRATION *a Component with harness connected (Air Conditioning Amplifier Assembly) HINT: If the measured voltage is not within the normal range, there may be a malfunction in the air conditioning amplifier assembly, air conditioner pressure sensor or wire harness. It is also possible that the amount of refrigerant may not be appropriate. NG --> See step 5 OK: Go to next step
  3. CHECK AIR CONDITIONER PRESSURE SENSOR (SENSOR SIGNAL CIRCUIT) Remove the air conditioning amplifier assembly with its connectors still connected. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000) . Measure the voltage when the following conditions are met. MEASUREMENT CONDITION Item Condition Engine Speed 2000 rpm Vehicle Doors Fully open Temperature Setting Max cold Blower Speed Hi A/C Switch On Air Inlet Control Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) NOTE: If the refrigerant pressure on the high pressure side becomes extremely high during the inspection (the voltage exceeds 4.8 V), the fail-safe function stops the compressor operation. Therefore, measure the voltage before the fail-safe operation. It is necessary to measure the voltage for a certain amount of time (approximately 10 minutes) because the problem symptom may recur after a while. HINT: When the outside air temperature is low (below -1.5°C [29.3°F]), the compressor stops due to the operation of the thermistor assembly and No. 1 cooler thermistor to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition C32-12 (PRE) - Body ground Conditions in "Measurement Condition" chart above are met 0.63 to 4.72 V TEXT IN ILLUSTRATION *a Component with harness connected (Air Conditioning Amplifier Assembly) RESULT Result Proceed to OK (When troubleshooting according to problem symptoms table) A OK (When troubleshooting according to DTC) B NG C B --> See step 17 C --> See step 11 A --> See step 22
  4. CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the A12 sensor connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A12-1 (-) - C32-10 (SG-2) Always Below 1 ohms A12-3 (+) - C32-7 (S5-3) Always Below 1 ohms C32-10 (SG-2) - Body ground Always 10 kohms or higher C32-7 (S5-3) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 17
  5. CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the A12 sensor connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A12-2 (PR) - C32-12 (PRE) Always Below 1 ohms C32-12 (PRE) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK FOR AIR CONDITIONING SYSTEM LEAK Install a manifold gauge set. Recover the refrigerant from the air conditioning system using a refrigerant recovery unit. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . Evacuate the air conditioning system and check that vacuum can be maintained in it. OK Vacuum can be maintained in the air conditioning system. HINT: If vacuum cannot be maintained in the air conditioning system, refrigerant may be leaking from it. In this case, it is necessary to repair or replace the leaking part of the air conditioning system. NG --> See step 10 OK: Go to next step
  7. CHARGE REFRIGERANT Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . NEXT: Go to next step
  8. CHECK FOR DTC Check for DTCs when the following conditions are met. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . MEASUREMENT CONDITION Item Condition Engine Speed 2000 rpm Vehicle Doors Fully open Temperature Setting Max cold Blower Speed Hi A/C Switch On Air Inlet Control Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) NOTE: If the refrigerant pressure on the high pressure side becomes high, a DTC will be stored. Therefore, it is necessary to check for DTCs after a certain amount of time (approximately 10 minutes) has passed because the DTC may be stored after the air conditioning system operates for a while. HINT: When the outside air temperature is low (below -1.5°C [29.3°F]), the compressor stops due to the operation of the thermistor assembly and No. 1 cooler thermistor to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment. OK DTC B1423 is not output. NOTE: If the DTC was stored due to an insufficient or excessive amount of refrigerant, the problem may have been solved after performing the previous step. However, the root cause of insufficient refrigerant may be refrigerant leakage. Therefore, identify and repair the area where refrigerant leaks as necessary. The root cause of excessive refrigerant may be adding too much refrigerant. NG --> See step 9 OK --> END (AMOUNT OF REFRIGERANT IS INCORRECT)
  9. CHECK AIR CONDITIONER PRESSURE SENSOR Remove the air conditioning amplifier assembly with its connectors still connected. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000) . Install a manifold gauge set. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition C32-12 (PRE) - C32-10 (SG-2) Engine running Refrigerant pressure normal (below 3030 kPa [30.9 kgf/cm 2 , 439 psi] and higher than 177 kPa [1.8 kgf/cm 2 , 26 psi]) 0.63 to 4.72 V Engine running Refrigerant pressure abnormal (below 177 kPa [1.8 kgf/cm 2 , 26 psi]) Below 0.63 V Engine running Refrigerant pressure abnormal (higher than 3030 kPa [30.9 kgf/cm 2 , 439 psi]) 4.72 V or higher TEXT IN ILLUSTRATION *a Component with harness connected (Air Conditioning Amplifier Assembly) NG --> See step 18 OK --> See step 17
  10. REPAIR AIR CONDITIONING SYSTEM LEAK Identify the area where refrigerant leaks. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . Repair the identified area of the air conditioning system. Evacuate the air conditioning system. NEXT --> See step 19
  11. CHECK COOLING FAN SYSTEM Check if the cooling fan system is functioning properly. Refer to «ON-VEHICLE INSPECTION [05/2013 - ]»(ref-615280-S37945227002014050900000) . OK Cooling fan system is functioning properly. NG --> See step 23 OK: Go to next step
  12. CHARGE REFRIGERANT Use a refrigerant recovery unit to recover refrigerant. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . Evacuate the air conditioning system. Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . HINT: If refrigerant is added and the system has not been properly evacuated (insufficient vacuum time), moisture in the air remaining in the system will freeze in the expansion valve, blocking the flow on the high pressure side. Therefore, in order to confirm the problem, recover the refrigerant and properly evacuate the system. Add an appropriate amount of refrigerant, and then check for DTCs. NEXT: Go to next step
  13. CHECK FOR DTC Check for DTCs when the following conditions are met. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . MEASUREMENT CONDITION Item Condition Engine Speed 2000 rpm Vehicle Doors Fully open Temperature Setting Max cold Blower Speed Hi A/C Switch On Air Inlet Control Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) NOTE: If the refrigerant pressure on the high pressure side becomes high, a DTC will be stored. Therefore, it is necessary to check for DTCs after a certain amount of time (approximately 10 minutes) has passed because the DTC may be stored after the air conditioning system operates for a while. HINT: When the outside air temperature is low (below -1.5°C [29.3°F]), the compressor stops due to the operation of the thermistor assembly and No. 1 cooler thermistor to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment. If refrigerant is added and the system has not been properly evacuated (insufficient vacuum time), moisture in the air remaining in the system will freeze in the expansion valve, blocking the flow on the high pressure side. Therefore, in order to confirm the problem, recover the refrigerant and properly evacuate the system. Add an appropriate amount of refrigerant and check for DTCs. If the DTC is not output after this procedure, it indicates that the cooler dryer in the condenser assembly with receiver is not able to absorb moisture in the refrigerant cycle. In this case, to complete the repair, it is necessary to replace the cooler dryer. OK DTC B1423 is not output. NG --> See step 14 OK --> See step 20
  14. REPLACE COOLER EXPANSION VALVE Temporarily replace the cooler expansion valve with a new or normally functioning one. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S30652115422014050900000) . HINT: Replace the cooler expansion valve with a new or normally functioning one because the cooler expansion valve is either stuck or clogged. NEXT: Go to next step
  15. CHARGE REFRIGERANT Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000) . NEXT: Go to next step
  16. CHECK FOR DTC Check for DTCs when the following conditions are met. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . MEASUREMENT CONDITION Item Condition Engine Speed 2000 rpm Vehicle Doors Fully open Temperature Setting Max cold Blower Speed Hi A/C Switch On Air Inlet Control Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) NOTE: If the refrigerant pressure on the high pressure side becomes high, a DTC will be stored. Therefore, it is necessary to check for DTCs after a certain amount of time (approximately 10 minutes) has passed because the DTC may be stored after the air conditioning system operates for a while. HINT: When the outside air temperature is low (below -1.5°C [29.3°F]), the compressor stops due to the operation of the thermistor assembly and No. 1 cooler thermistor to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment. If the refrigerant pressure is not normal after replacing the expansion valve with a new or normally functioning one, the cooler condenser assembly or pipes may be clogged due to dirt, dust or other contaminants. In this case, clean or replace the condenser assembly with receiver or the pipes. OK DTC B1423 is not output. NG --> See step 21 OK --> END (COOLER EXPANSION VALVE IS FAULTY)
  17. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)
  18. REPLACE AIR CONDITIONER PRESSURE SENSOR. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S12384390572014050900000)
  19. CHARGE REFRIGERANT. Refer to «REPLACEMENT [05/2013 - ]»(ref-615270-S32727816542014050900000)
  20. REPLACE COOLER DRYER. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S42770599982014050900000)
  21. CLEAN OR REPLACE CONDENSER ASSEMBLY WITH RECEIVER OR PIPES. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S42770599982014050900000)
  22. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [01/2014 - ]»(ref-615247-S15205853812014050900000)
  23. GO TO COOLING FAN SYSTEM. Refer to «ON-VEHICLE INSPECTION [05/2013 - ]»(ref-615280-S37945227002014050900000)
  1. READ VALUE USING TECHSTREAM (REGULATOR CONTROL CURRENT) Use the Data List to check if the compressor assembly with pulley is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Regulator Control Current Compressor assembly with pulley signal / Min.: 0 A Max.: 0.997 A Value changes between 0 A and 0.997 A in accordance with compressor assembly with pulley operation Check this item with the engine idling and A/C switch on. OK The display is as specified in the normal condition column. Result Proceed to OK (When troubleshooting according to Problem Symptoms Table) A OK (When troubleshooting according to DTC output) B NG C B --> See step 5 C --> See step 2 A --> See step 4
  2. INSPECT COMPRESSOR ASSEMBLY WITH PULLEY Remove the compressor assembly with pulley. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615270-S11038017252014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (SOL+) - 1 (SOL-) 20°C (68°F) 10 to 11 ohms NG --> See step 6 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (COMPRESSOR ASSEMBLY WITH PULLEY - AIR CONDITIONING AMPLIFIER ASSEMBLY AND BODY GROUND) Disconnect the B8 compressor connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C32-13 (SOL+) - B8-2 (SOL+) Always Below 1 ohms C32-13 (SOL+) - Body ground Always 10 kohms or higher B8-1 (SOL-) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
  4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [05/2013 - 01/2014]»(ref-615247-S35623382742014050900000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)
  6. REPLACE COMPRESSOR ASSEMBLY WITH PULLEY. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615270-S11038017252014050900000)
  1. READ VALUE USING TECHSTREAM (REGULATOR CONTROL CURRENT) Use the Data List to check if the compressor assembly with pulley is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Regulator Control Current Compressor assembly with pulley signal / Min.: 0 A Max.: 0.997 A Value changes between 0 A and 0.997 A in accordance with compressor assembly with pulley operation Check this item with the engine idling and A/C switch on. OK The display is as specified in the normal condition column. Result Proceed to OK (When troubleshooting according to Problem Symptoms Table) A OK (When troubleshooting according to DTC output) B NG C B --> See step 5 C --> See step 2 A --> See step 4
  2. INSPECT COMPRESSOR ASSEMBLY WITH PULLEY Remove the compressor assembly with pulley. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S14396386522014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (SOL+) - 1 (SOL-) 20°C (68°F) 10 to 11 ohms NG --> See step 6 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (COMPRESSOR ASSEMBLY WITH PULLEY - AIR CONDITIONING AMPLIFIER ASSEMBLY AND BODY GROUND) Disconnect the B8 compressor connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C32-13 (SOL+) - B8-2 (SOL+) Always Below 1 ohms C32-13 (SOL+) - Body ground Always 10 kohms or higher B8-1 (SOL-) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
  4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [01/2014 - ]»(ref-615247-S15205853812014050900000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)
  6. REPLACE COMPRESSOR ASSEMBLY WITH PULLEY. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S14396386522014050900000)
  1. READ VALUE USING TECHSTREAM (FLOW SENSOR) Use the Data List to check if the flow sensor is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . AIR CONDITIONING Tester Display Measurement Item/Range Normal Condition Diagnostic Note Flow sensor Flow sensor signal / Min.: 0 V Max.: 5 V Value changes between 0 V and 5 V in accordance with flow sensor condition Check this item with the engine idling and A/C switch on. The flow sensor is malfunctioning when a constant value below 0.3 V or higher than 4.7 V is displayed continuously for more than 4 seconds. RESULT Result Proceed to Below 0.3 V or higher than 4.7 V is displayed continuously for more than 4 seconds A Display is as specified in Normal Condition column B B --> See step 5 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (COMPRESSOR ASSEMBLY WITH PULLEY [FLOW SENSOR] - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the B7 sensor connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B7-3 (QUFL) - C32-4 (FLOQ) Always Below 1 ohms B7-1 (S5FL) - C32-6 (S5-1) Always Below 1 ohms B7-2 (SGFL) - C32-10 (SG-2) Always Below 1 ohms C32-4 (FLOQ) - Body ground Always 10 kohms or higher C32-6 (S5-1) - Body ground Always 10 kohms or higher C32-10 (SG-2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
  3. REPLACE COMPRESSOR ASSEMBLY WITH PULLEY Temporarily replace the compressor assembly with pulley (flow sensor) with a new or normally functioning one. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615270-S11038017252014050900000) . NEXT: Go to next step
  4. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . OK DTC B1479 is not output. NG --> See step 10 OK --> END (COMPRESSOR ASSEMBLY WITH PULLEY (FLOW SENSOR) IS FAULTY)
  5. READ VALUE USING TECHSTREAM (FLOW SENSOR) Use the Data List to check if the flow sensor is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . AIR CONDITIONING Tester Display Measurement Item/Range Normal Condition Diagnostic Note Flow sensor Flow sensor signal / Min.: 0 V Max.: 5 V Value changes between 0 V and 5 V in accordance with flow sensor condition Check this item with the engine idling and A/C switch on. The flow sensor is malfunctioning when a constant value below 0.3 V or higher than 4.7 V is displayed continuously for more than 4 seconds. RESULT Result Proceed to Sensor is stuck in an intermediate position A/C switch on to off Sensor voltage is 3.76 V or less and does not change for 8.5 minutes or more A Sensor is stuck at zero position A/C switch on Sensor voltage is 3.76 V or more and does not change for 8.5 minutes or more A Sensor is not stuck (When troubleshooting according to problem symptoms table) B Sensor is not stuck (When troubleshooting according to DTC) C B --> See step 9 C --> See step 8 A: Go to next step
  6. REPLACE COMPRESSOR ASSEMBLY WITH PULLEY (FLOW SENSOR) Temporarily replace the compressor assembly with pulley (flow sensor) with a new or normally functioning one. Refer to «REMOVAL [05/2013 - 01/2014]»(ref-615270-S11038017252014050900000) . NEXT: Go to next step
  7. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . OK DTC B1479 is not output. NG --> See step 10 OK --> END (COMPRESSOR ASSEMBLY WITH PULLEY (FLOW SENSOR) IS FAULTY)
  8. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . OK DTC B1479 is not output. NG --> See step 10 OK --> See step 11
  9. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [05/2013 - 01/2014]»(ref-615247-S35623382742014050900000)
  10. REPLACE AIR CONDITIONING AMPLIFIER. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)
  11. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615109-S39439522442014050900000)
  1. READ VALUE USING TECHSTREAM (FLOW SENSOR) Use the Data List to check if the flow sensor is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . AIR CONDITIONING Tester Display Measurement Item/Range Normal Condition Diagnostic Note Flow sensor Flow sensor signal / Min.: 0 V Max.: 5 V Value changes between 0 V and 5 V in accordance with flow sensor condition Check this item with the engine idling and A/C switch on. The flow sensor is malfunctioning when a constant value below 0.3 V or higher than 4.7 V is displayed continuously for more than 4 seconds. RESULT Result Proceed to Below 0.3 V or higher than 4.7 V is displayed continuously for more than 4 seconds A Display is as specified in Normal Condition column B B --> See step 5 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (COMPRESSOR ASSEMBLY WITH PULLEY [FLOW SENSOR] - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the B7 sensor connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B7-3 (QUFL) - C32-4 (FLOQ) Always Below 1 ohms B7-1 (S5FL) - C32-6 (S5-1) Always Below 1 ohms B7-2 (SGFL) - C32-10 (SG-2) Always Below 1 ohms C32-4 (FLOQ) - Body ground Always 10 kohms or higher C32-6 (S5-1) - Body ground Always 10 kohms or higher C32-10 (SG-2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
  3. REPLACE COMPRESSOR ASSEMBLY WITH PULLEY Temporarily replace the compressor assembly with pulley (flow sensor) with a new or normally functioning one. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S14396386522014050900000) . NEXT: Go to next step
  4. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . OK DTC B1479 is not output. NG --> See step 10 OK --> END (COMPRESSOR ASSEMBLY WITH PULLEY (FLOW SENSOR) IS FAULTY)
  5. READ VALUE USING TECHSTREAM (FLOW SENSOR) Use the Data List to check if the flow sensor is functioning properly. Refer to «DATA LIST / ACTIVE TEST [05/2013 - ]»(ref-615247-S31232994112014050900000) . AIR CONDITIONING Tester Display Measurement Item/Range Normal Condition Diagnostic Note Flow sensor Flow sensor signal / Min.: 0 V Max.: 5 V Value changes between 0 V and 5 V in accordance with flow sensor condition Check this item with the engine idling and A/C switch on. The flow sensor is malfunctioning when a constant value below 0.3 V or higher than 4.7 V is displayed continuously for more than 4 seconds. RESULT Result Proceed to Sensor is stuck in an intermediate position A/C switch on to off Sensor voltage is 3.76 V or less and does not change for 8.5 minutes or more A Sensor is stuck at zero position A/C switch on Sensor voltage is 3.76 V or more and does not change for 8.5 minutes or more A Sensor is not stuck (When troubleshooting according to problem symptoms table) B Sensor is not stuck (When troubleshooting according to DTC) C B --> See step 9 C --> See step 8 A: Go to next step
  6. REPLACE COMPRESSOR ASSEMBLY WITH PULLEY (FLOW SENSOR) Temporarily replace the compressor assembly with pulley (flow sensor) with a new or normally functioning one. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S14396386522014050900000) . NEXT: Go to next step
  7. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . OK DTC B1479 is not output. NG --> See step 10 OK --> END (COMPRESSOR ASSEMBLY WITH PULLEY (FLOW SENSOR) IS FAULTY)
  8. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . Check for DTCs. Refer to «DTC CHECK / CLEAR [05/2013 - ]»(ref-615247-S32264724902014050900000) . OK DTC B1479 is not output. NG --> See step 10 OK --> See step 11
  9. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [01/2014 - ]»(ref-615247-S15205853812014050900000)
  10. REPLACE AIR CONDITIONING AMPLIFIER. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)
  11. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615109-S05098042762014050900000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Use the Techstream to check if the CAN communication system is functioning properly. Refer to «DIAGNOSIS SYSTEM [05/2013 - 01/2014]»(ref-615285-S11042255172014050900000) . OK CAN DTC is not output. NG --> See step 2 OK --> See step 3
  2. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615285-S08854909152014050900000)
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [05/2013 - 01/2014]»(ref-615109-S39439522442014050900000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Use the Techstream to check if the CAN communication system is functioning properly. Refer to «DIAGNOSIS SYSTEM [01/2014 - ]»(ref-615285-S37069111882014050900000) . OK CAN DTC is not output. NG --> See step 2 OK --> See step 3
  2. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615285-S25999187862014050900000)
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2014 - ]»(ref-615109-S05098042762014050900000)
  1. CHECK HARNESS AND CONNECTOR (RECIRCULATION DAMPER SERVO AND NO. 1 HEATER CONTROL - BATTERY AND BODY GROUND) Disconnect the C29 servo connector. Disconnect the C30 heater control connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C29-5 (IG+) - Body ground Ignition switch off Below 1 V Ignition switch ON 11 to 14 V Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C30-2 (A/C+) - Body ground Ignition switch off Below 1 V Ignition switch ON 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C30-4 (REC) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Recirculation Damper Servo Sub-assembly) *b Front view of wire harness connector (to No. 1 Heater Control Sub-assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. INSPECT NO. 1 HEATER CONTROL SUB-ASSEMBLY Remove the No. 1 heater control sub-assembly. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S04993969082014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 (FRS) - 4 (REC) Air inlet control switch "Fresh" Below 1 ohms Air inlet control switch "Recirculation" 10 kohms or higher 5 (LED+) - 4 (REC) Air inlet control switch "Fresh" 10 kohms or higher Air inlet control switch "Recirculation" Below 1 ohms Apply battery voltage to the terminals and check that the indicator light comes on. OK Tester Connection Condition Specified Condition Battery positive - 2 (A/C+) Battery negative - 4 (REC) Air inlet switch "Fresh" Indicator light off Air inlet switch "Recirculation" Indicator light comes on NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (NO. 1 HEATER CONTROL SUB-ASSEMBLY - RECIRCULATION DAMPER SERVO SUB-ASSEMBLY) Disconnect the C30 heater control connector. Disconnect the C29 servo connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C30-3 (FRS) - C29-2 (FRS) Always Below 1 ohms C30-5 (LED+) - C29-1 (REC) Always Below 1 ohms C30-3 (FRS) - Body ground Always 10 kohms or higher C30-5 (LED+) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
  4. REPLACE RECIRCULATION DAMPER SERVO SUB-ASSEMBLY. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S20674793082014050900000)
  5. REPLACE NO. 1 HEATER CONTROL SUB-ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S04993969082014050900000)
  1. INSPECT HEATER BLOWER MOTOR RELAY ASSEMBLY Remove the heater blower motor relay assembly. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S29620110032014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 4 Voltage is not applied between terminals 1 and 2 Below 1 ohms Battery voltage is applied between terminals 1 and 2 10 kohms or higher 3 - 5 Voltage is not applied between terminals 1 and 2 10 kohms or higher Battery voltage is applied between terminals 1 and 2 Below 1 ohms NG --> See step 11 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (HEATER BLOWER MOTOR RELAY ASSEMBLY - BATTERY AND BODY GROUND) Disconnect the C57 relay connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition C57-1 - Body ground Ignition switch ON 11 to 14 V Ignition switch off Below 1 V C57-5 - Body ground Always 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C57-4 - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Heater Blower Motor Relay Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (HEATER BLOWER MOTOR RELAY ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the C57 relay connector. Disconnect the C32 amplifier connector. Disconnect the C21 heater control connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C57-2 - C32-21 (SBLW) Always Below 1 ohms C32-21 (SBLW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT NO. 2 HEATER CONTROL SUB-ASSEMBLY Remove the No. 2 heater control sub-assembly. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S35055379772014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 4 (LO), 6 (HI), 9 (M1) or 10 (M2) - 5 (E) 0 10 kohms or higher 4 (LO) - 5 (E) 1 Below 1 ohms 4 (LO) or 9 (M1) - 5 (E) 1 - 2 Below 1 ohms 4 (LO) or 9 (M1) - 5 (E) 2 Below 1 ohms 4 (LO), 9 (M1) or 10 (M2) - 5 (E) 2 - 3 Below 1 ohms 4 (LO) or 10 (M2) - 5 (E) 3 Below 1 ohms 4 (LO), 6 (HI) or 10 (M2) - 5 (E) 3 - 4 Below 1 ohms 4 (LO) or 6 (HI) - 5 (E) 4 Below 1 ohms NG --> See step 14 OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (NO. 2 HEATER CONTROL SUB-ASSEMBLY - BATTERY AND BODY GROUND) Disconnect the C21 heater control connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C21-4 (LO) - Body ground Ignition switch ON 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C21-5 (E) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 2 Heater Control Sub-assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. INSPECT BLOWER RESISTOR Remove the blower resistor. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S20674793082014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 (E) - 1 (HI) Always 3.12 to 3.59 ohms 2 (M1) - 1 (HI) Always 1.45 to 1.67 ohms 3 (M2) - 1 (HI) Always 0.52 to 0.60 ohms NG --> See step 13 OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (BLOWER RESISTOR - NO. 2 HEATER CONTROL SUB-ASSEMBLY AND BODY GROUND) Disconnect the C27 resistor connector. Disconnect the C21 heater control connector. Disconnect the C26 motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C27-3 (M2) - C21-10 (M2) Always Below 1 ohms C27-2 (M1) - C21-9 (M1) Always Below 1 ohms C27-1 (HI) - C21-6 (HI) Always Below 1 ohms C27-4 (E) - Body ground Always Below 1 ohms C27-3 (M2) - Body ground Always 10 kohms or higher C27-2 (M1) - Body ground Always 10 kohms or higher C27-1 (HI) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  8. INSPECT BLOWER WITH FAN MOTOR SUB-ASSEMBLY Remove the blower with fan motor sub-assembly. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S41469381372014050900000) . Apply battery voltage to the terminals and check that the blower with fan motor sub-assembly operates. OK Measurement Condition Specified Condition Battery positive - 2 (B) Battery negative - 1 (L) Blower with fan motor sub-assembly operates smoothly NG --> See step 12 OK: Go to next step
  9. CHECK HARNESS AND CONNECTOR (HEATER BLOWER MOTOR RELAY ASSEMBLY - BLOWER WITH FAN MOTOR SUB-ASSEMBLY) Disconnect the C57 relay connector. Disconnect the C26 motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition C57-3 - C26-2 (B) Always Below 1 ohms C57-3 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  10. CHECK HARNESS AND CONNECTOR (BLOWER WITH FAN MOTOR SUB-ASSEMBLY - NO. 2 HEATER CONTROL SUB-ASSEMBLY AND BLOWER RESISTOR) Disconnect the C26 motor connector. Disconnect the C21 heater control connector. Disconnect the C27 resistor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C26-1 (L) - C21-6 (HI) Always Below 1 ohms C26-1 (L) - C27-1 (HI) Always Below 1 ohms C26-1 (L) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 15
  11. REPLACE HEATER BLOWER MOTOR RELAY ASSEMBLY. Refer to «REMOVAL [01/2014 - ]»(ref-615270-S29620110032014050900000)
  12. REPLACE BLOWER WITH FAN MOTOR SUB-ASSEMBLY. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S41469381372014050900000)
  13. REPLACE BLOWER RESISTOR. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S20674793082014050900000)
  14. REPLACE NO. 2 HEATER CONTROL SUB-ASSEMBLY. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S35055379772014050900000)
  15. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)
  1. CHECK HARNESS AND CONNECTOR (NO. 3 HEATER CONTROL SUB-ASSEMBLY - BATTERY) Disconnect the C31 No. 3 heater control connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C31-2 (B) - Body ground Ignition switch off Below 1 V Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 3 Heater Control Sub-assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. INSPECT NO. 3 HEATER CONTROL SUB-ASSEMBLY Remove the No. 3 heater control sub-assembly. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S35055379772014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 2 (B) - 3 (A/C) A/C switch off 10 kohms or higher A/C switch on Below 1 ohms Apply battery voltage to the terminals and check that the indicator light comes on. OK Measurement Condition Switch Condition Specified Condition Battery positive - 2 (B) Battery negative - 4 (AIND) A/C switch off Indicator light off A/C switch on Indicator light comes on NG --> See step 4 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (NO. 3 HEATER CONTROL SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the C31 No. 3 heater control connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C31-4 (AIND) - C32-28 (LED) Always Below 1 ohms C31-3 (A/C) - C32-27 (A/C) Always Below 1 ohms C31-4 (AIND) - Body ground Always 10 kohms or higher C31-3 (A/C) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
  4. REPLACE NO. 3 HEATER CONTROL SUB-ASSEMBLY. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S35055379772014050900000)
  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [05/2013 - 01/2014]»(ref-615247-S35623382742014050900000)
  1. CHECK HARNESS AND CONNECTOR (NO. 3 HEATER CONTROL SUB-ASSEMBLY - BATTERY) Disconnect the C31 No. 3 heater control connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C31-2 (B) - Body ground Ignition switch off Below 1 V Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 3 Heater Control Sub-assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. INSPECT NO. 3 HEATER CONTROL SUB-ASSEMBLY Remove the No. 3 heater control sub-assembly. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S35055379772014050900000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 2 (B) - 3 (A/C) A/C switch off 10 kohms or higher A/C switch on Below 1 ohms Apply battery voltage to the terminals and check that the indicator light comes on. OK Measurement Condition Switch Condition Specified Condition Battery positive - 2 (B) Battery negative - 4 (AIND) A/C switch off Indicator light off A/C switch on Indicator light comes on NG --> See step 4 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (NO. 3 HEATER CONTROL SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the C31 No. 3 heater control connector. Disconnect the C32 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C31-4 (AIND) - C32-28 (LED) Always Below 1 ohms C31-3 (A/C) - C32-27 (A/C) Always Below 1 ohms C31-4 (AIND) - Body ground Always 10 kohms or higher C31-3 (A/C) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
  4. REPLACE NO. 3 HEATER CONTROL SUB-ASSEMBLY. Refer to «DISASSEMBLY [05/2013 - ]»(ref-615270-S35055379772014050900000)
  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [01/2014 - ]»(ref-615247-S15205853812014050900000)
  1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND) Disconnect the C32 amplifier connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C32-14 (IG+) - Body ground Ignition switch off Below 1 V Ignition switch ON 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C32-24 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Rear view of wire harness connector (to Air Conditioning Amplifier Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
  2. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [05/2013 - ]»(ref-615270-S32704544182014050900000)

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