DIAGNOSTIC TROUBLE CODE CHART

Diagnostic trouble codes

AIR CONDITIONING SYSTEM
DTC No.	Detection Item	Trouble Area	Memory^*4	See page
B1411/11^*1	Room Temperature Sensor Circuit	1. Room temperature sensor 2. Harness and connector between room temperature sensor and A/ C amplifier 3. A/C amplifier	Memorized (8.5 min. or more)	Click here
B1412/12^*2	Ambient Temperature Sensor Circuit	1. Ambient temperature sensor 2. Harness and connector between ambient temperature sensor and ECM 3. ECM 4. Multiplex communication circuit 5. A/C amplifier	Memorized (8.5 min. or more)	Click here
B1413/13	Evaporator Temperature Sensor Circuit	1. Air conditioning harness (evaporator temperature sensor) 2. A/C amplifier	Memorized (8.5 min. or more)	Click here
B1418/18	Exhaust Gas Sensor Circuit	1. Smog ventilation sensor (emission gas sensor) 2. Harness and connector between smog ventilation sensor (emission gas sensor) and A/C amplifier 3. A/C amplifier	-	Click here
B1421/21^*3	Solar Sensor Circuit (Passenger Side)	1. Solar sensor 2. Harness and connector between solar sensor and A/C amplifier 3. Harness and connector between solar sensor and multiplex network body ECU (cowl side junction block ECU RH) 4. A/C amplifier	Memorized (8.5 min. or more) (only when circuit is shorted)	Click here
B1422/22	Compressor Lock Sensor Circuit	1. A/C compressor 2. A/C compressor drive belt 3. A/C compressor and magnetic clutch lock sensor 4. Harness and connector between ECM and A/C compressor 5. ECM 6. A/C amplifier	-	Click here
B1423/23	Pressure Switch Circuit	1. Pressure sensor 2. Harness and connector between pressure sensor and A/C amplifier 3. Refrigerant pipe line 4. A/C amplifier	-	Click here
B1424/24^*3	Solar Sensor Circuit (Driver Side)	1. Solar sensor 2. Harness and connector between solar sensor and A/C amplifier 3. Harness and connector between solar sensor and multiplex network ECU (cowl side junction block ECU RH) 4. A/C amplifier	Memorized (8.5 min. or more) (only when circuit is shorted)	Click here
B1441/41	Air Mix Damper Control Servo Motor Circuit (Passenger Side)	1. A/C amplifier 2. Air conditioning harness 3. Air mix control servo motor	Memorized (30 sec.)	Click here
B1442/42	Air Inlet Damper Control Servo Motor Circuit	1. A/C amplifier 2. Air conditioning harness 3. Air inlet control servo motor	Memorized (30 sec.)	Click here
B1443/43	Air Outlet Damper Control Servo Motor Circuit	1. A/C amplifier 2. Air conditioning harness 3. Air outlet control servo motor	Memorized (30 sec.)	Click here
B1445/45	Front Passenger Seat Side Cool Air Bypass Damper Control Servo Motor Circuit	1. A/C amplifier 2. Air conditioning harness 3. Cool air by-pass damper control servo motor	Memorized (30 sec.)	Click here
B1446/46	Air Mix Damper Control Servo Motor Circuit (Driver Side)	1. A/C amplifier 2. Air conditioning harness 3. Air mix control servo motor	Memorized (30 sec.)	Click here
B1451/51	Compressor Solenoid Circuit	1. A/C compressor 2. Harness and connector between A/C amplifier and solenoid of externally changeable compressor 3. A/C amplifier	-	Click here
B1461/61	Emission Gas NOx Sensor Circuit	1. Smog ventilation sensor (emission gas NOx sensor) 2. Harness and connector between smog ventilation sensor (emission gas NOx sensor) and A/C amplifier 3. A/C amplifier	-	Click here
B1497/97	BUS IC Communication Malfunction	1. Air conditioning harness 2. A/C amplifier	Memorized (10 sec. or more)	Click here
B1499/99	Multiplex Communication Circuit	Multiplex communication system	Memorized	Click here

*¹: If the room 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, DTC B1412/12 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) may be output.
*⁴: The A/C amplifier memorizes the DTC of the respective malfunction if it has occurred for the period of time indicated in the brackets.