Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Echo 2000-2002 Approved techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 02echorm ac trou pst

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AC-14
                                       AIR CONDITIONING    -   TROUBLESHOOTING


TROUBLESHOOTING
                                                                                                           AC27Y-03


PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, replace these parts.
Standard:
                             Symptom                                          Suspect Area            See page
                                                      4.   HTR Fuse                                      -
                                                      5.   Heater main relay                           AC-64
                                                      6.   Blower motor                                AC-56
No blower operation
                                                      7.   Blower resistor                             AC-58
                                                      8.   Blower speed control switch                 AC-88
                                                      9.   Wire harness                                  -

                                                      1. Engine coolant volume                           -
No air temperature control
                                                      2. Heater control assembly                       AC-78

                                                      1. Refrigerant volume                            AC-3
                                                      2. A.C Fuse                                        -
                                                      3. Magnetic clutch relay                         AC-66
                                                      4. Magnetic clutch                               AC-42
                                                      5. Compressor                                    AC-42
No compressor operation
                                                      6. Pressure switch                               AC-61
                                                      7. A/C switch                                    AC-88
                                                      8. A/C amplifier                                 AC-75
                                                      9. Thermistor                                    AC-60
                                                      10.Wire harness                                    -
                                                      1. Refrigerant volume                            AC-3
                                                      2. Refrigerant pressure                          AC-3
                                                      3. Drive belt                                    AC-16
                                                      4. Magnetic clutch                               AC-42
                                                      5. Compressor                                    AC-42
No cool air comes out                                 6. Pressure switch                               AC-61
                                                      7. Thermistor                                    AC-60
                                                      8. A/C switch                                    AC-88
                                                      9. A/C amplifier                                 AC-75
                                                      10.Heater control assembly                       AC-78
                                                      11.Wire harness                                    -
                                                      1. Refrigerant volume                            AC-3
                                                      2. Drive belt                                    AC-16
                                                      3. Magnetic clutch                               AC-42
                                                      4. Compressor                                    AC-42
                                                      5. Condenser                                     AC-49
Insufficient cooling                                  6. Expansion valve                               AC-54
                                                      7. Evaporator                                    AC-31
                                                      8. Refrigerant lines                             AC-21
                                                      9. Pressure switch                               AC-61
                                                      10.A/C amplifier                                 AC-75
                                                      11.Heater control assembly                       AC-78

                                                      1. A/C amplifier                                 AC-75
No engine idle-up when A/C switch ON                  2. Engine (and ECT) ECU                            -
                                                      3. Wire harness                                    -
No air inlet control                                  Heater control assembly                          AC-78
No mode control                                       Heater control assembly                          AC-78




 2002 ECHO (RM884U)

                                                                        Author :             Date :            1461
                                                                                                                                AC-15
                                                AIR CONDITIONING          -   TROUBLESHOOTING


                             Symptom                                                         Suspect Area                    See page
                                                                     1.   ECU - IG Fuse                                         -
                                                                     2.   RDI Fuse                                              -
                                                                     3.   Fan No. 1 relay                                     AC-67
                                                                     4.   Water temperature switch                            AC-90
No condenser fan operation
                                                                     5.   Fan motor                                           AC-68
                                                                     6.   A/C amplifier                                       AC-75
                                                                     7.   Engine (and ECT) ECU                                  -
                                                                     8.   Wire harness                                          -
                                                                     1.   Fan No. 2 relay                                     AC-67
                                                                     2.   Pressure switch                                     AC-61
No condenser fan speed change                                        3.   Condenser fan resistor                              AC-74
                                                                     4.   A/C amplifier                                       AC-75
                                                                     5.   Wire harness                                          -

Two way flow heater:
                             Symptom                                                         Suspect Area                    See page
                                                                     1.   GAUGE Fuse                                            -
                                                                     2.   HTR Fuse                                              -
                                                                     3.   Heater main relay                                   AC-64
No blower operation                                                  4.   Blower motor                                        AC-56
                                                                     5.   Blower resistor                                     AC-58
                                                                     6.   Blower speed control switch                         AC-88
                                                                     7.   Wire harness                                          -
                                                                     1.   ECU - IG Fuse                                         -
                                                                     2.   Air inlet servomotor                                AC-59
No air inlet control                                                 3.   Heater switch (Heater control assembly)             AC-82
                                                                     4.   PTC amplifier                                       AC-75
                                                                     5.   Wire harness                                          -
                                                                     1.   A/C Fuse                                              -
Air inlet door does not operate on the two way flow position, when
                                                                     2.   Micro switch (for MAX. WARM)                        AC-39
perform in these conditions:
                                                                     3.   Micro switch (for FOOT, FOOT/DEF.)                  AC-39
S Air inlet selector: FRESH
                                                                     4.   Heater switch (Heater control assembly)             AC-82
S Blower switch: ON
                                                                     5.   PTC amplifier                                       AC-75
S Temperature control selector: MAX. WARM
                                                                     6.   Air inlet servomotor                                AC-59
S Mode selector: FOOT or FOOT/DEF.
                                                                     7.   Wire harness                                          -

PTC heater:
                             Symptom                                                         Suspect Area                    See page
                                                                     1.   A/C Fuse                                              -
                                                                     2.   Micro switch (for MAX. WARM)                        AC-39
PTC heater does not operate, when perform in these conditions:       3.   Micro switch (for FOOT, FOOT/DEF.)                  AC-39
S Engine coolant temp.: 60 



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