LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2007 >> Avalon Touring >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> Air Conditioning System >> Diagnostic Trouble Code Chart

Diagnostic Trouble Code Chart

If a trouble code is displayed during the DTC check (sensor check), check the circuit listed for that code in the table below (proceed to the article given for that circuit).

AIR CONDITIONING SYSTEM 

DETECTION ITEM AND TROUBLE AREA REFERENCE

DTC No. Detection Item Trouble Area Memory*6
DTC B1411/11 ROOM TEMPERATURE SENSOR CIRCUIT  *1 Room Temperature Sensor Circuit
  1. A/C room temperature sensor
  2. Harness or connector between A/C room temperature sensor and A/ C amplifier
  3. A/C amplifier
 Memorized
(8.5 min. or more)
DTC B1412/12 AMBIENT TEMPERATURE SENSOR CIRCUIT  *2 Ambient Temperature Sensor Circuit
  1. A/C ambient temperature sensor
  2. Harness or connector between A/C ambient temperature sensor and engine room J/B assembly
  3. Engine room J/B assembly
 Memorized
(8.5 min. or more)
DTC B1413/13 EVAPORATOR TEMPERATURE SENSOR CIRCUIT  Evaporator Temperature Sensor Circuit
  1. A/C evaporator temperature sensor
  2. Harness or connector between A/C evaporator temperature sensor and A/ C amplifier
  3. A/C amplifier
 Memorized
(8.5 min. or more)
DTC B1421/21 SOLAR SENSOR CIRCUIT (PASSENGER SIDE)  *3 Solar Sensor Circuit (Passenger Side)
  1. A/C solar sensor
  2. Harness or connector between A/C solar sensor and A/C amplifier
  3. A/C amplifier
 Memorized
(8.5 min. or more)
(Only when circuit is shorted)
DTC B1422/22 COMPRESSOR LOCK SENSOR CIRCUIT  *4 Compressor Lock Sensor Circuit
  1. A/C lock sensor (w/ magnet clutch compressor assembly)
  2. Compressor drive belt
  3. Harness or connector between A/C amplifier and ECM
  4. Harness or connector between A/C lock sensor (w/ magnet clutch compressor assembly) and A/C amplifier
  5. ECM
  6. A/C amplifier
 -
DTC B1423/23 PRESSURE SENSOR CIRCUIT  Pressure Switch Circuit
  1. A/C Pressure sensor
  2. Harness or connector between A/C pressure sensor and A/C amplifier
  3. Refrigerant pipe line
  4. A/C amplifier
 -
DTC B1424/24 SOLAR SENSOR CIRCUIT (DRIVER SIDE)  *3 Solar Sensor Circuit (Driver Side)
  1. A/C solar sensor
  2. Harness or connector between A/C solar sensor and A/C amplifier
  3. A/C amplifier
 Memorized
(8.5 min. or more)
(Only when circuit is shorted)
DTC B1441/41 AIR MIX DAMPER CONTROL SERVO MOTOR CIRCUIT (PASSENGER SIDE)  Air Mix Damper Control Servo Motor Circuit (Passenger Side)
  1. Air mix control servomotor
  2. Air conditioning harness assembly
  3. A/C amplifier
 Memorized
(30 sec. or more)
B1442/42  Air Inlet Damper Control Servo Motor Circuit
  1. Air inlet control servomotor
  2. Air conditioning harness assembly
  3. A/C amplifier
 Memorized
(30 sec. or more)
B1443/43  Air Outlet Damper Control Servo Motor Circuit
  1. Air outlet control servomotor
  2. Air conditioning harness assembly
  3. A/C amplifier
 Memorized
(30 sec. or more)
B1446/46  Air Mix Damper Control Servo Motor Circuit (Driver Side)
  1. Air mix control servomotor
  2. Air conditioning harness assembly
  3. A/C amplifier
 Memorized
(30 sec. or more)
B1451/51  Compressor Solenoid Circuit
  1. w/ magnet clutch compressor assembly
  2. Harness and connector between A/C amplifier and solenoid of the externally changeable compressor
  3. A/C amplifier
 -
B1463/63 *5 Driver Side Seat Heater Temperature Sensor Circuit
  1. Seat heater control sub-assembly
  2. Seat heater LH (Seat cushion)
  3. Harness or connector between seat heater control sub-assembly and A/C amplifier
  4. A/C amplifier
 -
B1464/64 *5 Front Passenger Side Seat Heater Temperature Sensor Circuit
  1. Seat heater control sub-assembly
  2. Seat heater LH (Seat cushion)
  3. Harness or connector between seat heater control sub-assembly and A/C amplifier
  4. A/C amplifier
 -
B1497/97  BUS IC Communication Malfunction
  1. Air conditioning harness assembly
  2. A/C amplifier
 Memorized
(10 sec. or more)
B1499/99  Multiplex Communication Circuit Open in multiplex communication circuit -
HINT:
  • *1: If the cabin temperature is approx. -18.6°C (-1.48°F) or lower, DTC B1411/11 may be output even though the system is normal.
  • *2: If the ambient temperature is approx. -52.9°C (-63.22°F) or lower, a malfunction code may be output even though the system is normal.
  • *3: If the check is performed in a dark place, DTC B1421/ 21 or B1424/24 (solar sensor circuit abnormal) could be displayed.
  • *4: Compressor lock (DTC B1422/22) is indicated only for a current occurring malfunction.

    To confirm DTC B1422/22, perform the following steps:

    1. With engine ON, enter the DTC check mode.
    2. Press the R/F (Recirculation / Fresh) switch to enter actuator check mode, and set the operation to Step No.3.
    3. Press the AUTO switch to return to DTC check mode.
    4. The DTC is displayed after approx. 3 sec.
  • *5: Even though the system is in good condition, DTC is output when the seat sensor temperature senses -40°C (-40°F) and over 99°C (210.2°F).
  • *6: The A/C amplifier memorizes the DTC of the respective malfunction that has occurred for a period of the time indicated in the brackets.
scientia non olet · About LEMON Manuals