DIAGNOSTIC TROUBLE CODE CHART

Diagnostic trouble codes


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	Memorized⁵ (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	Memorized⁵ (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: 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 (solar sensor circuit abnormal) or DTC B1424/24 (solar sensor circuit abnormal) could be displayed.
*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: Short in circuit
*⁶: Open in circuit