Air Conditioning System (For Hatchback) Problem Symptoms Table

Vehicle Interior. Yaris. Ncp93, 131
Heating Air Conditioning. Yaris. Ncp93, 131

Air Conditioning System (For Hatchback) -- Problem Symptoms Table


HINT:
  1. Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Air Conditioning System (w/ Cooler)
Symptom
Suspected Area
See page
All functions of the A/C system do not operate.
IG power source circuit
YARIS_NCP93 RM000001N8U02KX.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
Air flow control: No blower operation.
Blower motor circuit
YARIS_NCP93 RM000002LLW02NX.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
Air flow control: No blower control.
Blower motor circuit
YARIS_NCP93 RM000002LLW02NX.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
Air flow control: Insufficient air flow.
Blower motor circuit
YARIS_NCP93 RM000002LLW02NX.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
Temperature control: less cool air comes out.
Refrigerant shortage check using the Techstream
YARIS_NCP93 RM000001FMN01MX.html
Refrigerant pressure
YARIS_NCP93 RM000000R58024X.html
Cooler expansion valve
-
Compressor with pulley assembly
YARIS_NCP93 RM000002CVX04PX.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
Temperature control: No cool air comes out.
Refrigerant volume
YARIS_NCP93 RM000001FMN01MX.html
YARIS_NCP93 RM000000R58024X.html
Refrigerant pressure
YARIS_NCP93 RM000000R58024X.html
Air conditioner pressure sensor circuit
YARIS_NCP93 RM000003E0P02GX.html
Compressor solenoid circuit
YARIS_NCP93 RM000000VAV06IX.html
Evaporator temperature sensor circuit
YARIS_NCP93 RM000002LJ502VX.html
Ambient temperature sensor circuit
YARIS_NCP93 RM000002LJ4036X.html
Heater control switch circuit
YARIS_NCP93 RM000002Y1M02UX.html
Air mix damper control cable sub-assembly
-
Cooler expansion valve
-
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
ECM
YARIS_NCP93 RM000000PDH0HSX.html
CAN communication system*1
YARIS_NCP93 RM000001RSO05UX.html
CAN communication system*2
YARIS_NCP93 RM000001RSO066X.html
Temperature control: No warm air comes out.
Evaporator temperature sensor circuit
YARIS_NCP93 RM000002LJ502VX.html
Ambient temperature sensor circuit
YARIS_NCP93 RM000002LJ4036X.html
Engine coolant temperature sensor circuit
YARIS_NCP93 RM000000PDF0EWX.html
PTC heater circuit*3
YARIS_NCP93 RM000001GFJ031X.html
Headlight signal circuit*3
YARIS_NCP93 RM000002Y1L01SX.html
Heater control switch circuit
YARIS_NCP93 RM000002Y1M02UX.html
Air mix damper control cable sub-assembly
-
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
ECM
YARIS_NCP93 RM000000PDH0HSX.html
CAN communication system*1
YARIS_NCP93 RM000001RSO05UX.html
CAN communication system*2
YARIS_NCP93 RM000001RSO066X.html
Harness or connector
-
Temperature control: Output air is warmer or cooler than the set temperature or response is slow.
Refrigerant volume
YARIS_NCP93 RM000001FMN01MX.html
YARIS_NCP93 RM000000R58024X.html
Refrigerant pressure
YARIS_NCP93 RM000000R58024X.html
Ambient temperature sensor circuit
YARIS_NCP93 RM000002LJ4036X.html
Engine coolant temperature sensor circuit
YARIS_NCP93 RM000000PDF0EWX.html
Air mix damper control cable sub-assembly
-
Radiator unit sub-assembly
-
Cooler expansion valve
-
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
ECM
YARIS_NCP93 RM000000PDH0HSX.html
CAN communication system*1
YARIS_NCP93 RM000001RSO05UX.html
CAN communication system*2
YARIS_NCP93 RM000001RSO066X.html
Temperature control: No temperature control (only Max. cool or Max. hot).
Ambient temperature sensor circuit
YARIS_NCP93 RM000002LJ4036X.html
Evaporator temperature sensor circuit
YARIS_NCP93 RM000002LJ502VX.html
Heater control switch circuit
YARIS_NCP93 RM000002Y1M02UX.html
Engine coolant temperature sensor circuit
YARIS_NCP93 RM000000PDF0EWX.html
Air mix damper control cable sub-assembly
-
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
ECM
YARIS_NCP93 RM000000PDH0HSX.html
CAN communication system*1
YARIS_NCP93 RM000001RSO05UX.html
CAN communication system*2
YARIS_NCP93 RM000001RSO066X.html
No air inlet control.
Recirculation damper servo motor circuit
YARIS_NCP93 RM000002Y1K026X.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
No air flow mode control.
Defroster damper control cable sub-assembly
-
Engine idle speed increase does not occur, or is continuous.
Compressor solenoid circuit
YARIS_NCP93 RM000000VAV06IX.html
Heater control switch circuit
YARIS_NCP93 RM000002Y1M02UX.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
ECM
YARIS_NCP93 RM000000PDH0HSX.html
CAN communication system*1
YARIS_NCP93 RM000001RSO05UX.html
CAN communication system*2
YARIS_NCP93 RM000001RSO066X.html
A/C indicator blinking.
Compressor solenoid circuit
YARIS_NCP93 RM000000VAV06IX.html
  1. *1: for Hatchback except Separate Type Yaw Rate Sensor
  2. *2: for Hatchback with Separate Type Yaw Rate Sensor
  3. *3: w/ PTC Heater

Air Conditioning System (w/o Cooler)
Symptom
Suspected Area
See page
All functions of the heater system do not operate.
IG power source circuit*1
YARIS_NCP93 RM000001N8U02KX.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
Air flow control: No blower operation.
Blower motor circuit
YARIS_NCP93 RM000002LLW02NX.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
Air flow control: No blower control.
Blower motor circuit
YARIS_NCP93 RM000002LLW02NX.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
Air flow control: Insufficient air flow.
Blower motor circuit
YARIS_NCP93 RM000002LLW02NX.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
Temperature control: No warm air comes out.
Ambient temperature sensor circuit*1
YARIS_NCP93 RM000002LJ4036X.html
Engine coolant temperature sensor circuit*1
YARIS_NCP93 RM000000PDF0EWX.html
PTC heater circuit*1
YARIS_NCP93 RM000001GFJ031X.html
Headlight signal circuit*1
YARIS_NCP93 RM000002Y1L01SX.html
Heater control switch circuit
YARIS_NCP93 RM000002Y1M02UX.html
Air mix damper control cable sub-assembly
-
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
ECM*1
YARIS_NCP93 RM000000PDH0HSX.html
CAN communication system*1*2
YARIS_NCP93 RM000001RSO05UX.html
CAN communication system*1*3
YARIS_NCP93 RM000001RSO066X.html
Harness or connector
-
Temperature control: Output air is warmer than the set temperature or response is slow.
Ambient temperature sensor circuit*1
YARIS_NCP93 RM000002LJ4036X.html
Engine coolant temperature sensor circuit*1
YARIS_NCP93 RM000000PDF0EWX.html
Air mix damper control cable sub-assembly
-
Radiator unit sub-assembly
-
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
ECM*1
YARIS_NCP93 RM000000PDH0HSX.html
CAN communication system*1*2
YARIS_NCP93 RM000001RSO05UX.html
CAN communication system*1*3
YARIS_NCP93 RM000001RSO066X.html
Temperature control: No temperature control (only Min. hot or Max. hot).
Ambient temperature sensor circuit*1
YARIS_NCP93 RM000002LJ4036X.html
Heater control switch circuit
YARIS_NCP93 RM000002Y1M02UX.html
Engine coolant temperature sensor circuit*1
YARIS_NCP93 RM000000PDF0EWX.html
Air mix damper control cable sub-assembly
-
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
ECM*1
YARIS_NCP93 RM000000PDH0HSX.html
CAN communication system*1*2
YARIS_NCP93 RM000001RSO05UX.html
CAN communication system*1*3
YARIS_NCP93 RM000001RSO066X.html
No air inlet control.
Recirculation damper servo motor circuit
YARIS_NCP93 RM000002Y1K026X.html
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
No air flow mode control.
Defroster damper control cable sub-assembly
-
Engine idle speed increase does not occur, or is continuous.*1
Air conditioning amplifier assembly
YARIS_NCP93 RM000001CXU00ZX.html
ECM
YARIS_NCP93 RM000000PDH0HSX.html
CAN communication system*2
YARIS_NCP93 RM000001RSO05UX.html
CAN communication system*3
YARIS_NCP93 RM000001RSO066X.html
  1. *1: w/ PTC Heater
  2. *2: for Hatchback except Separate Type Yaw Rate Sensor
  3. *3: for Hatchback with Separate Type Yaw Rate Sensor