AIR CONDITIONING SYSTEM > DIAGNOSTIC TROUBLE CODE CHART

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DTC No.
Detection Item
Trouble Area
Memory*4
See page
B1411/11*1
Room Temperature Sensor Circuit
1. A/C room temperature sensor
2. Harness or connector between cooler A/C room temperature sensor and A/C amplifier assembly
3. A/C amplifier assembly
Memorized
(8.5 min. or more)
 Click here
B1412/12*2
Ambient Temperature Sensor Circuit
1. A/C ambient temperature sensor
2. Harness or connector between A/C ambient temperature sensor and hybrid vehicle control ECU
3. Hybrid vehicle control ECU
4. Multiplex communication circuit
5. A/C amplifier assembly
Memorized
(8.5 min. or more)
 Click here
B1413/13
Evaporator Temperature Sensor Circuit
1. A/C evaporator temperature sensor (A/C thermistor)
2. Harness or connector between A/C evaporator temperature sensor and A/C amplifier assembly
3. A/C amplifier assembly
Memorized
(8.5 min. or more)
 Click here
B1421/21*3
Solar Sensor Circuit (Passenger Side)
1. Automatic light control sensor
2.Harness or connector between automatic light control sensor and A/C amplifier assembly and multiplex network body ECU
3. A/C amplifier assembly
Memorized*5
(8.5 min. or more)
-*6
Click here
B1423/23
Pressure Switch Circuit
1. A/C pressure switch
2. Harness or connector between A/C pressure switch and hybrid vehicle control ECU, A/C pressure switch and body ground
4. Multiplex communication circuit
5. Refrigerant pipe line
6. Hybrid vehicle control ECU
7. A/C amplifier assembly
-
 Click here
B1424/24*3
Solar Sensor Circuit (Driver Side)
1. Automatic light control sensor
2. Harness or connector between automatic light control sensor and A/C amplifier assembly or multiplex network body ECU
3. A/C amplifier assembly
Memorized*5
(8.5 min. or more)
-*6
Click here
B1431/31
Air Mix Damper Position Sensor Circuit (Passenger Side)
1. Air mix control servomotor (air mix damper position sensor)
2. Harness or connector between air mix control servomotor and A/C amplifier assembly
3. A/C amplifier assembly
Memorized
(1 min. or more)
 Click here
B1432/32
Air Inlet Damper Position Sensor Circuit
1. Air inlet control servomotor (air inlet damper position sensor)
2. Harness or connector between air inlet control servomotor and A/C amplifier assembly
3. A/C amplifier assembly
Memorized
(1 min. or more)
 Click here
B1433/33
Air Outlet Damper Position Sensor Circuit
1. Air outlet control servomotor (air outlet damper position sensor)
2. Harness or connector between air outlet control servomotor and A/C amplifier assembly
3. A/C amplifier assembly
Memorized
(1 min. or more)
 Click here
B1436/36
Air Mix Damper Position Sensor Circuit (Driver Side)
1. Air mix control servomotor (air mix damper position sensor)
2. Harness or connector between air mix control servomotor and A/C amplifier assembly
3. A/C amplifier assembly
Memorized
(1 min. or more)
 Click here
B1441/41
Air Mix Damper Control Servomotor Circuit (Passenger Side)
1. Air mix control servomotor
2. Harness or connector between air mix control servomotor and A/C amplifier assembly
3. A/C amplifier assembly
Memorized
(15 sec. )
 Click here
B1442/42
Air Inlet Damper Control Servomotor Circuit
1. Air inlet control servomotor
2. Harness or connector between air inlet control servomotor and A/C amplifier assembly
3. A/C amplifier assembly
Memorized
(15 sec.)
 Click here
B1443/43
Air Outlet Damper Control Servomotor Circuit
1. Air outlet control servomotor
2. Harness or connector between air outlet control servomotor and A/C amplifier assembly
3. A/C amplifier assembly
Memorized
(15 sec.)
 Click here
B1446/46
Air Mix Damper Control Servomotor Circuit (Driver Side)
1. Air mix control servomotor
2. Harness or connector between air mix control servomotor and A/C amplifier assembly
3. A/C amplifier assembly
Memorized
(15 sec.)
 Click here
B1462/62
Room Humidity Sensor Circuit
1. A/C room humidity sensor (A/C room temperature sensor)
2. Harness or connector between A/C room humidity sensor (A/C room temperature sensor) and A/C amplifier assembly
3. A/C amplifier assembly
-
 Click here
B1471/71
A/C Inverter High Voltage Power Resource System Malfunction
1. Harness or connector between w/ motor compressor assembly and w/ converter inverter assembly
2. w/ Motor compressor assembly
3. Hybrid control system
4. w/ Converter inverter assembly
Memorized
 Click here
B1472/72
A/C Inverter High Voltage Output System Malfunction
1. w/ Motor compressor assembly
Memorized
 Click here
B1473/73
A/C Inverter Start-up Signal System Malfunction
1. Harness or connector between hybrid vehicle control ECU and w/ motor compressor assembly
2. w/ Motor compressor assembly
3. Hybrid control system
-
 Click here
B1475/75
A/C Inverter Cooling / Heating System Malfunction
1. Cooling fan system
2. SFI system
3. Refrigerant volume
4. w/Motor compressor assembly
Memorized
 Click here
B1476/76
A/C Inverter Load System Malfunction
1. Refrigerant volume
2. w/ Motor compressor assembly
3. Cooling fan system
4. SFI system
Memorized
 Click here
B1477/77
A/C Inverter Low Voltage Power Resource System Malfunction
1. w/ Motor compressor assembly
Memorized
 Click here
B1498/98
Communication Malfunction (A/C Inverter Local)
1. Harness or connector between hybrid vehicle control ECU and w/ motor compressor assembly and body ground
2. Hybrid vehicle control ECU
3. w/ Motor compressor assembly
4. w/ Converter inverter assembly
5. Engine wire No.4
Memorized
 Click here
B1474/74
A/C Inverter Malfunction
1. w/ Motor compressor assembly
Memorized
 Click here
P0AA6-611
Hybrid Battery Voltage System Isolation Fault
1. Compressor oil
2. w/ Motor compressor assembly
-
 Click here
B1499/99
Multiplex Communication Circuit
1. Multiplex communication system
Memorized
 Click here

HINT:
  1. *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. *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. *3: If the check is performed in a dark place, DTC B1421/21 (solar sensor circuit abnormal) or DTC B1424/24 (solar sensor circuit abnormal) could be displayed.
  4. *4: The A/C amplifier memorizes the DTC of the respective malfunction that has occurred for a period of the time indicated in the brackets.
  5. *5: Short in circuit
  6. *6: Open in circuit