Air Conditioning System (Diagnostic Codes & Circuit Tests): Other Lexus ES XV60

PROCEDURE

1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Room Temperature Sensor Room temperature sensor (cooler thermistor) / min.: -6.50°C (20.30°F) max.: 57.25°C (135.05°F) Actual cabin temperature displayed - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 4 C --> See step 5 A: Go to next step
2. INSPECT ROOM TEMPERATURE SENSOR (COOLER THERMISTOR) Remove the room temperature sensor (cooler thermistor). Refer to «REMOVAL [06/2012 - ]»(ref-598598-S24072258322014021400000) . 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 1 (+) - 2 (-) 15°C (59°F) 2.45 to 2.88 kohms 1 (+) - 2 (-) 20°C (68°F) 1.95 to 2.30 kohms 1 (+) - 2 (-) 25°C (77°F) 1.60 to 1.80 kohms 1 (+) - 2 (-) 30°C (86°F) 1.28 to 1.47 kohms 1 (+) - 2 (-) 35°C (95°F) 1.00 to 1.22 kohms 1 (+) - 2 (-) 40°C (104°F) 0.80 to 1.00 kohms 1 (+) - 2 (-) 45°C (113°F) 0.65 to 0.85 kohms 1 (+) - 2 (-) 50°C (122°F) 0.50 to 0.70 kohms 1 (+) - 2 (-) 55°C (131°F) 0.44 to 0.60 kohms 1 (+) - 2 (-) 60°C (140°F) 0.36 to 0.50 kohms NOTE: Hold the sensor only by its connector. Touching the sensor may change the resistance value. When measuring, the sensor temperature must be the same as the ambient temperature. HINT: As the temperature increases, the resistance decreases (see the graph). TEXT IN ILLUSTRATION *a Component without harness connected (Room Temperature Sensor (Cooler Thermistor)) *b Sensing Portion *c Resistance (kohms) *d Allowable Range *e Temperature (°C (°F)) NG --> See step 6 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (ROOM TEMPERATURE SENSOR (COOLER THERMISTOR) - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the H54 air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H54-29 (TR) - H43-1 (+) Always Below 1 ohms H54-34 (SG-1) - H43-2 (-) Always Below 1 ohms H54-29 (TR) - Body ground Always 10 kohms or higher H54-34 (SG-1) - Body ground Always 10 kohms or higher 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 [06/2012 - ]»(ref-598464-S25253580382014021400000)
5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
6. REPLACE ROOM TEMPERATURE SENSOR (COOLER THERMISTOR). Refer to «REMOVAL [06/2012 - ]»(ref-598598-S24072258322014021400000)

1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ambient Temp Sensor Ambient temperature sensor (thermistor assembly) / Min: -23.30°C (-9.94°F) Max: 65.95°C (150.71°F) Actual ambient temperature displayed - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 4 C --> See step 5 A: Go to next step
2. INSPECT AMBIENT TEMPERATURE SENSOR (THERMISTOR ASSEMBLY) Remove the ambient temperature sensor (thermistor assembly). Refer to «REMOVAL [06/2012 - ]»(ref-598598-S18028244532014021400000) . 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 1 (-) - 2 (+) 15°C (59°F) 2.45 to 2.88 kohms 1 (-) - 2 (+) 20°C (68°F) 1.95 to 2.30 kohms 1 (-) - 2 (+) 25°C (77°F) 1.60 to 1.80 kohms 1 (-) - 2 (+) 30°C (86°F) 1.28 to 1.47 kohms 1 (-) - 2 (+) 35°C (95°F) 1.00 to 1.22 kohms 1 (-) - 2 (+) 40°C (104°F) 0.80 to 1.00 kohms 1 (-) - 2 (+) 45°C (113°F) 0.65 to 0.85 kohms 1 (-) - 2 (+) 50°C (122°F) 0.50 to 0.70 kohms 1 (-) - 2 (+) 55°C (131°F) 0.44 to 0.60 kohms 1 (-) - 2 (+) 60°C (140°F) 0.36 to 0.50 kohms NOTE: Hold the sensor only by its connector. Touching the sensor may change the resistance value. When measuring, the sensor temperature must be the same as the ambient temperature. HINT: As the temperature increases, the resistance decreases (see the graph). TEXT IN ILLUSTRATION *a Component without harness connected (Ambient Temperature Sensor (Thermistor Assembly)) *b Sensing Portion *c Resistance (kohms) *d Allowable Range *e Temperature (°C (°F)) NG --> See step 6 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (AMBIENT TEMPERATURE SENSOR (THERMISTOR ASSEMBLY) - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the H54 air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H54-5 (TAM) - A3-2 (+) Always Below 1 ohms H54-13 (SG-2) - A3-1 (-) Always Below 1 ohms H54-5 (TAM) - Body ground Always 10 kohms or higher H54-13 (SG-2) - Body ground Always 10 kohms or higher 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 [06/2012 - ]»(ref-598464-S25253580382014021400000)
5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
6. REPLACE AMBIENT TEMPERATURE SENSOR (THERMISTOR ASSEMBLY). Refer to «REMOVAL [06/2012 - ]»(ref-598598-S18028244532014021400000)

1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Evaporator Fin Thermistor Evaporator temperature sensor (No. 1 cooler thermistor) / Min.: -29.70°C (-21.46°F) Max.: 59.55°C (139.19°F) Actual evaporator temperature displayed - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 5 C --> See step 4 A: Go to next step
2. INSPECT EVAPORATOR TEMPERATURE SENSOR (NO. 1 COOLER THERMISTOR) Remove the evaporator temperature sensor (No. 1 cooler thermistor). Refer to «REMOVAL [06/2012 - ]»(ref-598598-S38849864042014021400000) . TEXT IN ILLUSTRATION *a Component without harness connected (Evaporator Temperature Sensor (No. 1 Cooler Thermistor)) *b Sensing Portion *c Resistance (kohms) *d Allowable Range *e Temperature (°C (°F)) - - 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 1 - 2 -5°C (23°F) 5.65 to 6.95 kohms 1 - 2 0°C (32°F) 4.40 to 5.35 kohms 1 - 2 5°C (41°F) 3.40 to 4.15 kohms 1 - 2 10°C (50°F) 2.70 to 3.25 kohms 1 - 2 15°C (59°F) 2.14 to 2.58 kohms 1 - 2 20°C (68°F) 1.71 to 2.05 kohms 1 - 2 25°C (77°F) 1.38 to 1.64 kohms 1 - 2 30°C (86°F) 1.11 to 1.32 kohms NOTE: Hold the sensor only by its connector. Touching the sensor may change the resistance value. When measuring, the sensor temperature must be the same as the ambient temperature. HINT: As the temperature increases, the resistance decreases (see the graph). NG --> See step 6 OK: Go to next step
3. INSPECT AIR CONDITIONING HARNESS ASSEMBLY Remove the air conditioning harness assembly. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S01169853782014021400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z1-6 (TEA) - ae-2 Always Below 1 ohms z1-5 (SGA) - ae-1 Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Conditioning Amplifier Assembly) *b Front view of wire harness connector (to Evaporator Temperature Sensor (No. 1 Cooler Thermistor)) NG --> See step 7 OK --> See step 4
4. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
6. REPLACE EVAPORATOR TEMPERATURE SENSOR (NO. 1 COOLER THERMISTOR). Refer to «REMOVAL [06/2012 - ]»(ref-598598-S38849864042014021400000)
7. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S01169853782014021400000)

1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Allow exhaust gas (HC, CO) to travel to the sensing portion of the smog ventilation sensor. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Emission Gas Sensor Emission gas (HC, CO) / Min.: 0 Max.: 255 Smog ventilation sensor value increases as gas amount increases - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 6 C --> See step 5 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - IG POWER SOURCE AND BODY GROUND) Disconnect the A6 smog ventilation sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A6-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V A6-3 (IG) - Body ground Engine switch off Below 1 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A6-6 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the H54 and H55 air conditioning amplifier assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A6-1 (SG) - H54-13 (SG-2) Always Below 1 ohms A6-2 (DGS) - H55-3 (DGS) Always Below 1 ohms H54-13 (SG-2) - Body ground Always 10 kohms or higher H55-3 (DGS) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT SMOG VENTILATION SENSOR Remove the smog ventilation sensor. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S16111576952014021400000) . Connect a battery positive (+) lead to terminal 3 (IG) and a negative (-) lead to terminal 6 (E). Allow exhaust gas (HC, CO) to travel to the sensing portion of the smog ventilation sensor, and measure the resistance between terminals 1 (SG) and 2 (DGS). OK When the sensor is exposed to the exhaust gas, the resistance increases. HINT: The resistance of the sensor before being exposed to exhaust gas is 10 kohms to 40 kohms. TEXT IN ILLUSTRATION *a Component without harness connected (Smog Ventilation Sensor) NG --> See step 7 OK --> See step 5
5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
7. REPLACE SMOG VENTILATION SENSOR. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S16111576952014021400000)

1. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) Disconnect the A57 air conditioning pressure sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A57-3 (+) - Body ground Engine switch on (IG) 4.75 to 5.25 V NG --> See step 5 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A57-1 (-) - Body ground Always Below 1 ohms NG --> See step 6 OK: Go to next step
3. INSPECT AIR CONDITIONING PRESSURE SENSOR (SENSOR SIGNAL CIRCUIT) Reconnect the A57 air conditioning pressure sensor connector. Remove the air conditioning amplifier assembly with the connectors still connected. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H54-9 (PRE) - Body ground Engine switch on (IG) (A/C: off) 0.50 to 4.80 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 conditioning pressure sensor, or wire harness. It is also possible that the amount of refrigerant may not be appropriate. NG --> See step 7 OK: Go to next step
4. INSPECT AIR CONDITIONING PRESSURE SENSOR (SENSOR SIGNAL CIRCUIT) Measure the voltage when the following conditions are satisfied. Item Condition Vehicle Doors Fully open Temperature Setting MAX COLD Blower Speed HI A/C Switch On R/F Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) Engine Speed 2000 rpm NOTE: If refrigerant pressure on the high pressure side becomes extremely high during the inspection (if the voltage exceeds 4.8 V), the fail-safe function stops 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 malfunction 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 operation of the ambient temperature sensor and the evaporator temperature sensor 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 H54-9 (PRE) - Body ground Engine switch on (IG) (A/C: on) 0.50 to 4.80 V TEXT IN ILLUSTRATION *a Component with harness connected (Air Conditioning Amplifier Assembly) Result Result Proceed to OK (When troubleshooting according to the DTC) A OK (When troubleshooting according to Problem Symptoms Table) B NG C B --> See step 19 C --> See step 13 A --> See step 21
5. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - AIR CONDITIONING PRESSURE SENSOR) Disconnect the H54 air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A57-3 (+) - H54-10 (S5-3) Always Below 1 ohms H54-10 (S5-3) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 21
6. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - AIR CONDITIONING PRESSURE SENSOR) Disconnect the H54 air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A57-1 (-) - H54-13 (SG-2) Always Below 1 ohms H54-13 (SG-2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 21
7. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - AIR CONDITIONING PRESSURE SENSOR) Disconnect the H54 air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A57-2 (PR) - H54-9 (PRE) Always Below 1 ohms H54-9 (PRE) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. INSPECT FOR A/C SYSTEM LEAK Install a manifold gauge set. Recover the refrigerant from the A/C system using a refrigerant recovery unit. Evacuate the A/C system and check that vacuum can be maintained in it. OK Vacuum can be maintained in the A/C system. HINT: If vacuum cannot be maintained in the A/C system, refrigerant may be leaking from it. In this case, it is necessary to repair or replace the leaking part of the A/C system. NG --> See step 12 OK: Go to next step
9. CHARGE SYSTEM WITH REFRIGERANT Use a refrigerant recovery unit to recover refrigerant. Evacuate the A/C system. Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [06/2012 - ]»(ref-598598-S25438424062014021400000) . 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 cooler 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. NEXT: Go to next step
10. RECHECK FOR DTC Recheck for DTCs when the following conditions are satisfied. Item Condition Vehicle Doors Fully open Temperature Setting MAX COLD Blower Speed HI A/C Switch On R/F Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) Engine Speed 2000 rpm NOTE: If refrigerant pressure on the high pressure side becomes high, the DTC will be set. It is necessary to measure the voltage for a certain amount of time (approximately 10 minutes) because the DTC may be set after the A/C operates for a while. HINT: When the outside air temperature is low (below -1.5°C (29.3°F)), the compressor stops due to operation of the ambient temperature sensor and the evaporator temperature sensor to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment. Result Result Proceed to DTC B1423/23 is output A DTC B1423/23 is not output B NOTE: If the DTC was set 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 leaks. The root cause of excessive refrigerant may be adding too much refrigerant when the level was insufficient. Therefore, identify and repair the area where refrigerant leaks from as necessary. B --> END A: Go to next step
11. INSPECT AIR CONDITIONING PRESSURE SENSOR Install a manifold gauge set. Reconnect the A57 air conditioning pressure sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H54-9 (PRE) - H54-13 (SG-2) Refrigerant pressure: (less than 3025 kPa (30.9 kgf/cm 2 , 439 psi) and more than 176 kPa (1.8 kgf/cm 2 , 26 psi)) 0.50 to 4.80 V TEXT IN ILLUSTRATION *a Component with harness connected (Air Conditioning Amplifier Assembly) NG --> See step 20 OK --> See step 21
12. REPAIR A/C SYSTEM LEAK Identify the area where refrigerant leaks from. Refer to «REPLACEMENT [06/2012 - ]»(ref-598598-S25438424062014021400000) . Repair the identified area of the A/C system. Evacuate the A/C system. NEXT --> See step 22
13. INSPECT COOLING FAN SYSTEM Check that the cooling fan(s) operates normally. HINT: Refer to cooling fan system. Refer to «ON-VEHICLE INSPECTION [06/2012 - ]»(ref-598629-S01157463782014021400000) . NG --> See step 23 OK: Go to next step
14. CHARGE SYSTEM WITH REFRIGERANT Use a refrigerant recovery unit to recover refrigerant. Evacuate the A/C system. Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [06/2012 - ]»(ref-598598-S25438424062014021400000) . 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 cooler 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. NEXT: Go to next step
15. RECHECK FOR DTC Recheck for DTCs when the following conditions are satisfied. Item Condition Vehicle Doors Fully open Temperature Setting MAX COLD Blower Speed HI A/C Switch On R/F Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) Engine Speed 2000 rpm NOTE: If refrigerant pressure on the high pressure side becomes high, the DTC will be set. It is necessary to measure the voltage for a certain amount of time (approximately 10 minutes) because the DTC may be set after the air conditioning operates for a while. HINT: When the outside air temperature is low (below -1.5°C (29.3°F)), the compressor stops due to operation of the ambient temperature sensor and the evaporator temperature sensor 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 cooler 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 the DTC. If the DTC is not output after this work, it indicates that the cooler dryer in the cooler condenser assembly is not able to absorb moisture in the refrigerant cycle. It is necessary to replace the cooler dryer in order to complete the repair. Result Result Proceed to DTC B1423/23 is output A DTC B1423/23 is not output B B --> See step 24 A: Go to next step
16. REPLACE COOLER EXPANSION VALVE Replace the cooler expansion valve with a new one. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S02777708762014021400000) . HINT: Replace the cooler expansion valve with a new one because the cooler expansion valve is either stuck or clogged. NEXT: Go to next step
17. CHARGE SYSTEM WITH REFRIGERANT Use a refrigerant recovery unit to recover refrigerant. Evacuate the A/C system. Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [06/2012 - ]»(ref-598598-S25438424062014021400000) . 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 cooler 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 the DTC. NEXT: Go to next step
18. RECHECK FOR DTC Recheck for DTCs when the following conditions are satisfied. Item Condition Vehicle Doors Fully open Temperature Setting MAX COLD Blower Speed HI A/C Switch On R/F Switch Recirculation Interior Temperature 25 to 35°C (77 to 95°F) Engine Speed 2000 rpm NOTE: If refrigerant pressure on the high pressure side becomes high, the DTC will be set. It is necessary to measure the voltage for a certain amount of time (approximately 10 minutes) because the DTC may be set after the air conditioning operates for a while. HINT: When the outside air temperature is low (below -1.5°C (29.3°F)), the compressor stops due to operation of the ambient temperature sensor and the evaporator temperature sensor to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment. If refrigerant pressure is not normal after replacing the cooler expansion valve with a new or known good one, the condenser or pipes may be clogged due to dirt, dust or other foreign matter. In this case, clean or replace the cooler condenser assembly or pipes. Result Result Proceed to DTC B1423/23 is not output A DTC B1423/23 is output B B --> CLEAN OR REPLACE COOLER CONDENSER ASSEMBLY OR PIPE A --> END
19. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
20. REPLACE AIR CONDITIONING PRESSURE SENSOR. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S20815745332014021400000)
21. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
22. CHARGE SYSTEM WITH REFRIGERANT. Refer to «REPLACEMENT [06/2012 - ]»(ref-598598-S25438424062014021400000)
23. GO TO COOLING FAN SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598629-S17183856212014021400000)
24. REPLACE COOLER CONDENSER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S18068363322014021400000)

1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Operate the front passenger side temperature adjustment switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Servo Actual Pulse(P) No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)) actual pulse / Min.: 0, Max.: 255 MAX. COLD: 105 (pulse) MAX. HOT: 7 (pulse) - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 5 C --> See step 6 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Mix Servo Targ Pulse(P) No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)) pulse Min.: 0, Max.: 255 Operates between 7 and 105 pulses OK Air temperature changes in accordance with each control range. NG --> See step 3 OK --> See step 6
3. REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (AIR MIX (FOR FRONT PASSENGER SIDE)) Replace the No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)). Refer to «DISASSEMBLY [06/2012 - ]»(ref-598598-S37815716982014021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1441/41 is output A DTC B1441/41 is not output B B --> END (NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY WAS DEFECTIVE) A: Go to next step
4. REPLACE AIR CONDITIONING HARNESS ASSEMBLY Replace the air conditioning harness assembly. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S01169853782014021400000) . HINT: Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1441/41 is output A DTC B1441/41 is not output B B --> END (AIR CONDITIONING HARNESS ASSEMBLY WAS DEFECTIVE) A --> See step 7
5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)

1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Operate the R/F (Recirculation/Fresh) switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Inlet Damper Actual Pulse No. 1 blower damper servo sub-assembly (air inlet) actual pulse / Min.: 0, Max.: 255 RECIRCULATION: 7 (pulse) FRESH: 28 (pulse) - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 5 C --> See step 6 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Inlet Damper Targ Pulse No. 1 blower damper servo sub-assembly (air inlet) pulse Min.: 0, Max.: 255 Operates between 7 and 28 pulses OK Recirculation damper position changes in accordance with each control range. NG --> See step 3 OK --> See step 6
3. REPLACE NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY (AIR INLET) Replace the No. 1 blower damper servo sub-assembly (air inlet). Refer to «DISASSEMBLY [06/2012 - ]»(ref-598598-S02082288432014021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1442/42 is output A DTC B1442/42 is not output B B --> END (NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY WAS DEFECTIVE) A: Go to next step
4. REPLACE AIR CONDITIONING HARNESS ASSEMBLY Replace the air conditioning harness assembly. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S01169853782014021400000) . HINT: Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1442/42 is output A DTC B1442/42 is not output B B --> END (AIR CONDITIONING HARNESS ASSEMBLY WAS DEFECTIVE) A --> See step 7
5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)

1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Operate the MODE switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Outlet Servo Actu Pulse(D) No. 1 air conditioning radiator damper servo sub-assembly (air outlet) actual pulse / Min.: 0, Max.: 255 FACE: 8 (pulse) B/L: 30 (pulse) FOOT (manual mode): 67 (pulse) FOOT (automatic mode): 60, 67, 74 (pulse) FOOT/DEF: 80 (pulse) DEF: 97 (pulse) - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 5 C --> See step 6 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Outlet Servo Pulse (D) No. 1 air conditioning radiator damper servo sub-assembly (air outlet) pulse Min.: 0, Max.: 255 Operates between 8 and 97 pulses OK Air flow position changes in accordance with each control range. NG --> See step 3 OK --> See step 6
3. REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (AIR OUTLET) Replace the No. 1 air conditioning radiator damper servo sub-assembly (air outlet). Refer to «DISASSEMBLY [06/2012 - ]»(ref-598598-S37815716982014021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1443/43 is output A DTC B1443/43 is not output B B --> END (NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY WAS DEFECTIVE) A: Go to next step
4. REPLACE AIR CONDITIONING HARNESS ASSEMBLY Replace the air conditioning harness assembly. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S01169853782014021400000) . HINT: Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1443/43 is output A DTC B1443/43 is not output B B --> END (AIR CONDITIONING HARNESS ASSEMBLY WAS DEFECTIVE) A --> See step 7
5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)

1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Operate the driver side temperature adjustment switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Servo Actual Pulse(D) No. 2 air conditioning radiator damper servo sub-assembly (air mix (for driver side)) actual pulse / Min.: 0, Max.: 255 MAX COLD: 5 (pulse) MAX HOT: 103 (pulse) - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 5 C --> See step 6 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Mix Servo Targ Pulse(D) No. 2 air conditioning radiator damper servo sub-assembly (air mix (for driver side)) pulse Min.: 0, Max.: 255 Operates between 5 and 103 pulses OK Air temperature changes in accordance with each control range. NG --> See step 3 OK --> See step 6
3. REPLACE NO. 2 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (AIR MIX (FOR DRIVER SIDE)) Replace the No. 2 air conditioning radiator damper servo sub-assembly (air mix (for driver side)). Refer to «DISASSEMBLY [06/2012 - ]»(ref-598598-S37815716982014021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1446/46 is output A DTC B1446/46 is not output B B --> END (NO. 2 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY WAS DEFECTIVE) A: Go to next step
4. REPLACE AIR CONDITIONING HARNESS ASSEMBLY Replace the air conditioning harness assembly. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S01169853782014021400000) . HINT: Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1446/46 is output A DTC B1446/46 is not output B B --> END (AIR CONDITIONING HARNESS ASSEMBLY WAS DEFECTIVE) A --> See step 7
5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)

1. INSPECT COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) Disconnect the D66 cooler compressor assembly (compressor solenoid) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (SOL-) - 2 (SOL+) 20°C (68°F) 10.1 to 11.1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Cooler Compressor Assembly (Compressor Solenoid)) NG --> See step 6 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D66-1 (SOL-) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the H54 air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H54-2 (SOL+) - D66-2 (SOL+) Always Below 1 ohms H54-2 (SOL+) - Body ground Always 10 kohms or higher Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 4 C --> See step 5 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR
4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
6. REPLACE COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID). Refer to «REMOVAL [06/2012 - ]»(ref-598598-S15634803202014021400000)

1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Allow exhaust gas (NOx) to travel to the sensing portion of the smog ventilation sensor. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Emission Gas Nox Sensor Emission gas (NOx) / Min.: 0 Max.: 255 Smog ventilation sensor value increases as gas amount increases - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 6 C --> See step 7 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - IG POWER SOURCE AND BODY GROUND) Disconnect the A6 smog ventilation sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A6-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V A6-3 (IG) - Body ground Engine switch off Below 1 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A6-6 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the H54 and H55 air conditioning amplifier assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A6-1 (SG) - H54-13 (SG-2) Always Below 1 ohms A6-4 (DGS1) - H55-4 (DGS1) Always Below 1 ohms H54-13 (SG-2) - Body ground Always 10 kohms or higher H55-4 (DGS1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT SMOG VENTILATION SENSOR Remove the smog ventilation sensor. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S16111576952014021400000) . Connect a battery positive (+) lead to terminal 3 (IG) and a negative (-) lead to terminal 6 (E). Allow exhaust gas (NOx) to travel to the sensing portion of the smog ventilation sensor, and measure the resistance between terminals 1 (SG) and 4 (DGS1). OK When the sensor is exposed to the exhaust gas, the resistance increases. HINT: The resistance of the sensor before being exposed to exhaust gas is 10 kohms to 40 kohms. TEXT IN ILLUSTRATION *a Component without harness connected (Smog Ventilation Sensor) NG --> See step 8 OK --> See step 5
5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
8. REPLACE SMOG VENTILATION SENSOR. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S16111576952014021400000)

1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Flow Sensor A/C flow sensor / Min.: 0.0 V Max.: 5.0 V A/C on, Blower switch HI: 0.7 to 3.8 V A/C off, Blower switch off: 3.8 to 4.2 V A/C flow sensor is malfunctioning when a constant value between 0.7 and 4.2 V is displayed continuously for more than 4 seconds. 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 the DTC) B NG (When a constant value between 0.7 and 4.2 V is displayed continuously for more than 4 seconds) C B --> See step 5 C --> See step 3 A: Go to next step
2. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note A/C Cutoff Signal A/C control cutoff signal / OFF or ON A/C switch on: OFF A/C switch off: ON - Result Result Proceed to Value in Data List indicates OFF A Value in Data List indicates ON B B --> See step 6 A: Go to next step
3. REPLACE COOLER COMPRESSOR ASSEMBLY (A/C FLOW SENSOR) Replace the cooler compressor assembly (A/C flow sensor). Refer to «REMOVAL [06/2012 - ]»(ref-598598-S15634803202014021400000) . HINT: Since the cooler compressor assembly (A/C flow sensor) cannot be inspected while it is removed from the vehicle, replace the cooler compressor assembly (A/C flow sensor) with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1479/79 is not output A DTC B1479/79 is output B B --> See step 4 A --> END
4. CHECK HARNESS AND CONNECTOR (COOLER COMPRESSOR ASSEMBLY (A/C FLOW SENSOR) - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the H54 air conditioning amplifier assembly connector. Disconnect the D67 cooler compressor assembly (A/C flow sensor) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H54-7 (FLOQ) - D67-3 (QUFL) Always Below 1 ohms H54-13 (SG-2) - D67-2 (SGFL) Always Below 1 ohms H54-30 (S5-1) - D67-1 (S5FL) Always Below 1 ohms H54-7 (FLOQ) - Body ground Always 10 kohms or higher H54-13 (SG-2) - Body ground Always 10 kohms or higher H54-30 (S5-1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)

1. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Mix Servo Targ Pulse(D) No. 2 air conditioning radiator damper servo sub-assembly (air mix (for driver side)) pulse Min.: 0, Max.: 255 Operates between 5 and 103 pulses Air Mix Servo Targ Pulse(P) No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)) pulse Min.: 0, Max.: 255 Operates between 7 and 105 pulses Air Outlet Servo Pulse (D) No. 1 air conditioning radiator damper servo sub-assembly (air outlet) pulse Min.: 0, Max.: 255 Operates between 8 and 97 pulses Air Inlet Damper Targ Pulse No. 1 blower damper servo sub-assembly (air inlet) pulse Min.: 0, Max.: 255 Operates between 7 and 28 pulses OK Arm of the damper servo motor selected in the Active Test moves smoothly. According to the test result, proceed to the next step. Result Result Proceed to One of the damper servo motors is malfunctioning A All of the damper servo motors are malfunctioning B B --> See step 7 A: Go to next step
2. SYSTEM CHECK According to the test result, proceed to the next step. Result Result Proceed to Only the No. 2 air conditioning radiator damper servo sub-assembly (air mix (for driver side)) is malfunctioning A Only the No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)) is malfunctioning B Only the No. 1 blower damper servo sub-assembly (air inlet) is malfunctioning C Only the No. 1 air conditioning radiator damper servo sub-assembly (air outlet) is malfunctioning D B --> See step 4 C --> See step 5 D --> See step 6 A: Go to next step
3. REPLACE NO. 2 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (AIR MIX (FOR DRIVER SIDE)) Replace the No. 2 air conditioning radiator damper servo sub-assembly (air mix (for driver side)). Refer to «DISASSEMBLY [06/2012 - ]»(ref-598598-S37815716982014021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1497/97 is not output A DTC B1497/97 is output B B --> See step 7 A --> END
4. REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (AIR MIX (FOR FRONT PASSENGER SIDE)) Replace the No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)). Refer to «DISASSEMBLY [06/2012 - ]»(ref-598598-S37815716982014021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1497/97 is not output A DTC B1497/97 is output B B --> See step 7 A --> END
5. REPLACE NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY (AIR INLET) Replace the No. 1 blower damper servo sub-assembly (air inlet). Refer to «DISASSEMBLY [06/2012 - ]»(ref-598598-S02082288432014021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1497/97 is not output A DTC B1497/97 is output B B --> See step 7 A --> END
6. REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (AIR OUTLET) Replace the No. 1 air conditioning radiator damper servo sub-assembly (air outlet). Refer to «DISASSEMBLY [06/2012 - ]»(ref-598598-S37815716982014021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1497/97 is not output A DTC B1497/97 is output B B --> See step 7 A --> END
7. REPLACE AIR CONDITIONING HARNESS ASSEMBLY Replace the air conditioning harness assembly. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S01169853782014021400000) . HINT: Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or known good one and check that the condition returns to normal. Check for DTCs. Result Result Proceed to DTC B1497/97 is not output A DTC B1497/97 is output B B --> See step 8 A --> END
8. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) Disconnect the H54 air conditioning amplifier assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H54-21 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
9. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)

Scheme 204

The solar sensor (automatic light control sensor) is installed on the upper side of the instrument panel. It detects sunlight to control air conditioning AUTO mode. The output voltage from the solar sensor (automatic light control sensor) varies in accordance with the amount of sunlight. When the sunlight increases, the output voltage increases. As the sunlight decreases, the output voltage decreases. The air conditioning amplifier assembly detects changes in the output voltage from the solar sensor (automatic light control sensor).

Scheme 205

1. CHECK HARNESS AND CONNECTOR (ACCESSORY METER ASSEMBLY - POWER SOURCE CIRCUIT) Disconnect the H86 accessory meter assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H86-4 (B1) - Body ground Always 11 to 14 V H86-2 (IG+) - Body ground Engine switch off Below 1 V H86-2 (IG+) - Body ground Engine switch on (IG) 11 to 14 V H86-1 (ACC) - Body ground Engine switch off Below 1 V H86-1 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (ACCESSORY METER ASSEMBLY - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H86-16 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - ACCESSORY METER ASSEMBLY) Disconnect the H54 air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H86-11 (LIN1) - H54-37 (LIN1) Always Below 1 ohms H86-11 (LIN1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. REPLACE ACCESSORY METER ASSEMBLY Replace the accessory meter assembly. Refer to «REMOVAL [06/2012 - ]»(ref-598615-S22256490762014021400000) . HINT: Since the accessory meter assembly cannot be inspected while it is removed from the vehicle, replace the accessory meter assembly with a new or known good one and same problem occurs again. OK Same problem does not occurs. Result Result Proceed to OK A NG (When troubleshooting according to Problem Symptoms Table) B NG (When troubleshooting according to the DTC) C B --> See step 5 C --> See step 6 A --> END (ACCESSORY METER ASSEMBLY WAS DEFECTIVE)
5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)

1. CHECK FOR AIR CONDITIONING SYSTEM LEAK Install a manifold gauge set. Recover the refrigerant from the air conditioning system using a refrigerant recovery unit. 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 7 OK: Go to next step
2. CHARGE SYSTEM WITH REFRIGERANT Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [06/2012 - ]»(ref-598598-S25438424062014021400000) . NEXT: Go to next step
3. CHECK FOR DTC Check for DTCs when the following conditions are met. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598464-S16175408692014021400000) . MEASUREMENT CONDITION Item Condition A/C switch On A/C operation time 15 minutes or more Ambient temperature* 0 to 49°C (32 to 120°F) Engine coolant temperature 45°C (113°F) or more Engine condition Engine running *: If the ambient temperature is not within the range shown, do not perform this check. Result Result Proceed to DTC B14B8 is output A DTC B14B8 is not output B B --> END A: Go to next step
4. REPLACE COOLER EXPANSION VALVE Replace the cooler expansion valve with a new or known good one. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S02777708762014021400000) . HINT: Replace the cooler expansion valve with a new or known good one because the cooler expansion valve is either stuck or clogged. NEXT: Go to next step
5. CHARGE SYSTEM WITH REFRIGERANT Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [06/2012 - ]»(ref-598598-S25438424062014021400000) . NEXT: Go to next step
6. CHECK FOR DTC Check for DTCs when the following conditions are met. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598464-S16175408692014021400000) . MEASUREMENT CONDITION Item Condition A/C switch On A/C operation time 15 minutes or more Ambient temperature* 0 to 49°C (32 to 120°F) Engine coolant temperature 45°C (113°F) or more Engine condition Engine running *: If the ambient temperature is not within the range shown, do not perform this check. Result Result Proceed to DTC B14B8 is output A DTC B14B8 is not output B B --> END A --> See step 14
7. REPAIR AIR CONDITIONING SYSTEM LEAK Identify the area where refrigerant leaks. Refer to «REPLACEMENT [06/2012 - ]»(ref-598598-S25438424062014021400000) . Repair the identified area of the air conditioning system. Evacuate the air conditioning system. NEXT: Go to next step
8. CHARGE SYSTEM WITH REFRIGERANT Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [06/2012 - ]»(ref-598598-S25438424062014021400000) . NEXT: Go to next step
9. CHECK FOR DTC Check for DTCs when the following conditions are met. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598464-S16175408692014021400000) . MEASUREMENT CONDITION Item Condition A/C switch On A/C operation time 15 minutes or more Ambient temperature* 0 to 49°C (32 to 120°F) Engine coolant temperature 45°C (113°F) or more Engine condition Engine running *: If the ambient temperature is not within the range shown, do not perform this check. Result Result Proceed to DTC B14B8 is output A DTC B14B8 is not output B B --> END A: Go to next step
10. REPLACE COOLER EXPANSION VALVE Replace the cooler expansion valve with a new or known good one. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S02777708762014021400000) . HINT: Replace the cooler expansion valve with a new or known good one because the cooler expansion valve is either stuck or clogged. NEXT: Go to next step
11. CHARGE SYSTEM WITH REFRIGERANT Add an appropriate amount of refrigerant. Refer to «REPLACEMENT [06/2012 - ]»(ref-598598-S25438424062014021400000) . NEXT: Go to next step
12. CHECK FOR DTC Check for DTCs when the following conditions are met. Refer to «DTC CHECK / CLEAR [06/2012 - ]»(ref-598464-S16175408692014021400000) . MEASUREMENT CONDITION Item Condition A/C switch On A/C operation time 15 minutes or more Ambient temperature* 0 to 49°C (32 to 120°F) Engine coolant temperature 45°C (113°F) or more Engine condition Engine running *: If the ambient temperature is not within the range shown, do not perform this check. Result Result Proceed to DTC B14B8 is output A DTC B14B8 is not output B B --> END A --> See step 13
13. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
14. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)

1. GO TO CAN COMMUNICATION SYSTEM HINT: Refer to CAN Communication System. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598635-S10414945732014021400000) . NEXT --> END

1. CONFIRM MODEL Result Result Proceed to w/ Multi-display A w/o Multi-display B B --> See step 5 A: Go to next step
2. CHECK CAN COMMUNICATION SYSTEM Use the Techstream to check if the CAN communication system is functioning normally. Result Result Proceed to CAN DTCs are not output A CAN DTCs are output B B --> See step 9 A: Go to next step
3. CHECK AVC-LAN COMMUNICATION CIRCUIT Check for an open or short in all AVC-LAN communication circuits. Refer to «AVC-LAN Circuit»(ref-598682-S24641715462014021400000) (w/ Navigation System)) Refer to «AVC-LAN Circuit»(ref-598676-S19593833602014021400000) (w/ Parking Assist Monitor System)) Refer to «AVC-LAN Circuit»(ref-598680-S34876765202014021400000) (w/o Parking Assist Monitor System)) OK There is no open or short circuit. NG --> REPAIR AVC-LAN COMMUNICATION CIRCUIT OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (POWER SOURCE, GROUND) Disconnect the H97 multi-media module receiver assembly connector.*1 or *2 Disconnect the H90 and H89 radio receiver assembly connectors.*3 Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H97-15 (IG) - H97-12 (GND1)*1 or *2 Engine switch off Below 1 V H97-15 (IG) - H97-12 (GND1)*1 or *2 Engine switch on (IG) 11 to 14 V H97-16 (ACC1) - H97-12 (GND1)*1 or *2 Engine switch off Below 1 V H97-16 (ACC1) - H97-12 (GND1)*1 or *2 Engine switch on (ACC) 11 to 14 V H97-17 (+B1) - H97-12 (GND1)*1 or *2 Always 11 to 14 V H89-1 (IG) - H90-20 (GND1)*3 Engine switch off Below 1 V H89-1 (IG) - H90-20 (GND1)*3 Engine switch on (IG) 11 to 14 V H90-11 (ACC1) - H90-20 (GND1)*3 Engine switch off Below 1 V H90-11 (ACC1) - H90-20 (GND1)*3 Engine switch on (ACC) 11 to 14 V H90-1 (+B1) - H90-20 (GND1)*3 Always 11 to 14 V *1: w/ Navigation System *2: w/ Parking Assist Monitor System *3: w/o Parking Assist Monitor System Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H97-12 (GND1) - Body ground*1 or *2 Always Below 1 ohms H90-20 (GND1) - Body ground*3 Always Below 1 ohms *1: w/ Navigation System *2: w/ Parking Assist Monitor System *3: w/o Parking Assist Monitor System NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
5. CHECK AVC-LAN COMMUNICATION CIRCUIT Check for an open or short in all AVC-LAN communication circuits. Refer to «AVC-LAN Circuit»(ref-598674-S12243674422014021400000) . OK There is no open or short circuit. NG --> REPAIR AVC-LAN COMMUNICATION CIRCUIT OK: Go to next step
6. CHECK LIN COMMUNICATION CIRCUIT Check for an open or short in all LIN communication circuits. Refer to «DTC B14B2: Lost Communication with Front Panel LIN»(ref-598664-S38573409672014021400000) . OK There is no open or short circuit. NG --> REPAIR LIN COMMUNICATION CIRCUIT OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (POWER SOURCE, GROUND) Disconnect the H82 and H42 radio receiver assembly connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H42-16 (ACC) - H42-9 (GND) Engine switch off Below 1 V H42-16 (ACC) - H42-9 (GND) Engine switch on (ACC) 11 to 14 V H82-1 (B) - 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 H42-9 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
8. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
9. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]»(ref-598635-S10414945732014021400000)

1. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Heater Active Level Quick heater assembly Min.: 0, Max.: 2 - OK Heater Active Level changes normally. NG --> See step 8 OK: Go to next step
2. INSPECT PTC HEATER RELAY (PTC HTR NO. 1, PTC HTR NO. 2) Remove the PTC HTR NO. 1 relay and PTC HTR NO. 2 relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 Battery voltage is not applied between terminals 1 and 2 10 kohms or higher 3 - 5 Battery voltage is applied between terminals 1 and 2 Below 1 ohms NG --> REPLACE PTC HEATER RELAY OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (PTC HTR NO. 1 RELAY, PTC HTR NO. 2 RELAY - POWER SOURCE) Measure the voltage according to the value(s) in the table below. Standard Voltage PTC1 Tester Connection Condition Specified Condition 3 - Body ground Always 11 to 14 V 2 - Body ground Engine switch on (IG) 11 to 14 V PTC2 Tester Connection Condition Specified Condition 3 - Body ground Always 11 to 14 V 2 - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (PTC HTR NO. 1 RELAY, PTC HTR NO. 2 RELAY - AIR CONDITIONING AMPLIFIER ASSEMBLY) Disconnect the H54 air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance PTC1 Tester Connection Condition Specified Condition 1 - H54-40 (PTC1) Always Below 1 ohms 1 - Body ground Always 10 kohms or higher PTC2 Tester Connection Condition Specified Condition 1 - H54-3 (PTC2) Always Below 1 ohms 1 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (PTC HTR NO. 1 RELAY, PTC HTR NO. 2 RELAY - QUICK HEATER ASSEMBLY) Disconnect the H31 quick heater assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance PTC1 Tester Connection Condition Specified Condition 5 - H31-1 (B) Always Below 1 ohms 5 - Body ground Always 10 kohms or higher PTC2 Tester Connection Condition Specified Condition 5 - H31-2 (B) Always Below 1 ohms 5 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. INSPECT QUICK HEATER ASSEMBLY Remove the quick heater assembly. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S14790353672014021400000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H31-1 (B)- Ground terminal Always Below 1 ohms H31-2 (B)- Ground terminal Always Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Quick Heater Assembly) NG --> See step 9 OK --> See step 7
7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S36763685372014021400000)
8. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)
9. REPLACE QUICK HEATER ASSEMBLY. Refer to «REMOVAL [06/2012 - ]»(ref-598598-S14790353672014021400000)

1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - IG POWER SOURCE) Disconnect the H54 air conditioning amplifier assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H54-1 (IG+) - Body ground Engine switch off Below 1 V H54-1 (IG+) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H54-14 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
3. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)

1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BATTERY) Disconnect the H54 air conditioning amplifier assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H54-21 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H54-14 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
3. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [06/2012 - ]»(ref-598464-S25253580382014021400000)