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.
*1: The air conditioning amplifier stores the DTC of the respective malfunction that has been detected for the period of time indicated in parentheses.
*2: For vehicles without an air conditioning system, DTCs B1413 and B1423 are always output and DTC B1451 may be output. As this is not a malfunction, troubleshooting is not necessary.
| DTC Code | Detection Item | Memory*1 | Diagnostic Note | See page |
|---|---|---|---|---|
| B1412 | Ambient Temperature Sensor Circuit | 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*2 | Evaporator Temperature Sensor Circuit | Stored (4 seconds or more) |
- | |
| B1423*2 | Pressure Sensor Circuit | Stored (4 seconds or more) |
- | |
| B1451*2 | Compressor Solenoid Circuit | Stored (30 seconds or more) |
- | |
| B14B8 | Refrigerant Shortage | Stored (15 seconds or more) |
- | |
| U0100 | Lost Communication with ECM | - | - | |
| U0131 | Lost Communication with Power Steering Control Module | - | - | |
| U0142 | Lost Communication with Main Body ECU | - | - | |
| U0155 | Lost Communication with Combination Meter | - | - |