AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) DIAGNOSTIC TROUBLE CODE CHART
Tech Tips
If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.
| DTC Code | Detection Item | Trouble Area | Memory* | Diagnostic Note | See page |
|---|---|---|---|---|---|
| B1411/11 | Room Temperature Sensor Circuit | - Cooler thermistor (room temperature sensor) - Harness or connector - Air conditioning amplifier assembly |
Stored (4 seconds or more) |
If the front room temperature is approx. -18.6°C (-1.48°F) or less, DTC B1411/11 may be stored even though the system is normal. | |
| B1412/12 | Ambient Temperature Sensor Circuit | - Cooler thermistor (ambient temperature sensor) - Harness or connector - Combination meter assembly - Air conditioning amplifier assembly |
Stored (4 seconds or more) |
If the ambient temperature is approx. -52.9°C (-63.22°F) or less, DTC B1412/12 may be stored even though the system is normal. | |
| B1413/13 | Evaporator Temperature Sensor Circuit | - No. 1 cooler thermistor - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (4 seconds or more) |
- | |
| B1423/23 | Pressure Sensor Circuit | - Air conditioning pressure sensor - Harness or connector - Cooler expansion valve - Condenser assembly with receiver - Cooler dryer - Refrigerant pipe line - Air conditioning amplifier assembly |
Stored (4 seconds or more) |
If the ambient temperature is 5°C (37°F) or less, DTC B1423/23 may be stored even though the system is normal. | |
| B1441/41 | Air Mix Damper Control Servo Motor Circuit (Passenger Side) | - Air mix damper servo sub-assembly (for front passenger side) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 seconds or more) |
- | |
| B1442/42 | Air Inlet Damper Control Servo Motor Circuit | - Air inlet damper servo sub-assembly - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 seconds or more) |
- | |
| B1443/43 | Air Outlet Damper Control Servo Motor Circuit | - Air outlet damper servo sub-assembly - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 seconds or more) |
- | |
| B1446/46 | Air Mix Damper Control Servo Motor Circuit (Driver Side) | - Air mix damper servo sub-assembly (for driver side) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 seconds or more) |
- | |
| B1451/51 | Compressor Solenoid Circuit | - Compressor assembly with pulley - Harness and connector - Air conditioning amplifier assembly |
Stored (30 seconds or more) |
- | |
| B1497/97 | BUS IC Communication Malfunction | - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (10 seconds or more) |
- | |
| B14A2 | Driver Side Solar Sensor Short Circuit | - Cooler thermistor (solar sensor) - Harness or connector - Air conditioning amplifier assembly |
Stored (4 seconds or more) |
If the check is performed in a dark place, DTC B14A3 (front passenger side solar sensor short circuit) may also be stored. | |
| B14A3 | Front Passenger Side Solar Sensor Short Circuit | - Cooler thermistor (solar sensor) - Harness or connector - Air conditioning amplifier assembly |
Stored (4 seconds or more) |
If the check is performed in a dark place, DTC B14A2 (driver side solar sensor short circuit) may also be stored. | |
| U0100 | Lost Communication with ECM | - CAN communication system - ECM |
- | - | |
| U0131 | Lost Communication with Power Steering Control Module | - CAN communication system - Power steering ECU assembly |
- | - | |
| U0142 | Lost Communication with Main Body ECU | - CAN communication system - Main body ECU (Instrument panel junction block assembly) |
- | - | |
| U0155 | Lost Communication with Combination Meter | - CAN communication system - Combination meter assembly |
- | - |
Tech Tips
*: The air conditioning amplifier stores the DTC of the respective malfunction that has been detected for the period of time indicated in the brackets.