Diagnostic Trouble Code Chart
AIR CONDITIONING SYSTEM
| DTC Code | Detection Item | Trouble Area | Memory (*4) |
Refer to |
|---|---|---|---|---|
| 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) |
Refer to DTC B1411/11: Room Temperature Sensor Circuit |
| 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) |
Refer to DTC B1412/12: Ambient Temperature Sensor Circuit |
| B1413/13 | Evaporator Temperature Sensor Circuit | 1. Air conditioning harness (evaporator temperature sensor) 2. A/C amplifier |
Memorized (8.5 min. or more) |
Refer to DTC B1413/13: Evaporator Temperature Sensor Circuit |
| 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 |
- | Refer to DTC B1418/18: Exhaust Gas Sensor Circuit |
| 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) |
Refer to DTC B1421/21: Solar Sensor Circuit (Passenger Side) |
| 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 |
- | Refer to DTC B1422/22: Compressor Lock Sensor Circuit |
| B1423/23 | Pressure Sensor Circuit | 1. Pressure sensor 2. Harness and connector between pressure sensor and A/C amplifier 3. Refrigerant pipe line 4. A/C amplifier |
- | Refer to DTC B1423/23: Pressure Sensor Circuit |
| 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) |
Refer to DTC B1424/24: Solar Sensor Circuit (Driver Side) |
| 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.) |
Refer to DTC B1441/41: Air Mix Damper Control Servo Motor Circuit (Passenger Side) |
| 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.) |
Refer to DTC B1442/42: Air Inlet Damper Control Servo Motor Circuit |
| 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.) |
Refer to DTC B1443/43: Air Outlet Damper Control Servo Motor Circuit |
| 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.) |
Refer to DTC B1445/45: Front Passenger Seat Side Cool Air Bypass Damper Control Servo Motor Circuit |
| 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.) |
Refer to DTC B1446/46: Air Mix Damper Control Servo Motor Circuit (Driver Side) |
| 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 |
- | Refer to DTC B1451/51: Compressor Solenoid Circuit |
| 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 |
- | Refer to DTC B1461/61: Emission Gas NOx Sensor Circuit |
| B1497/97 | BUS IC Communication Malfunction | 1. Air conditioning harness 2. Air mix control servo motor (for driver side) 3. Air mix control servo motor (for front passenger side) 4. Air outlet control servo motor 5. Air inlet control servo motor 6. Cool air by-pass control servo motor 7. A/C amplifier |
- | Refer to DTC B1497/97: BUS IC Communication Malfunction |
| B1499/99 | Multiplex Communication Circuit | Multiplex communication system | Memorized | Refer to DTC B1499/99: Multiplex Communication Circuit |
- *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.