AIR CONDITIONING SYSTEM (for Manual Air Conditioning System) DIAGNOSTIC TROUBLE CODE CHART
| DTC Code | Detection Item | Trouble Area | Memory*2 | See page |
|---|---|---|---|---|
| B1412 | Ambient Temperature Sensor Circuit | - Ambient temperature sensor (thermistor assembly) - Harness or connector between ambient temperature sensor (thermistor assembly) and combination meter assembly - Combination meter assembly - Air conditioning amplifier - CAN communication line |
Memorized (4 sec. or more) |
|
| B1413 | Evaporator Temperature Sensor Circuit | - Front evaporator temperature sensor (No. 1 cooler thermistor) - Harness and connector between front evaporator temperature sensor (No. 1 cooler thermistor) and air conditioning amplifier - Air conditioning amplifier |
Memorized (4 sec. or more) |
|
| B1423 | Pressure Sensor Circuit | - Air conditioner pressure sensor - Harness or connector between air conditioner pressure sensor and air conditioning amplifier - Air conditioning amplifier - Expansion valve (blocked, stuck) - Condenser (blocked, deterioration of cooling capacity due to dirt) - Cooler dryer (moisture in the refrigerant cycle cannot be absorbed) - Cooling fan (condenser cannot be cooled down) - Air conditioning system (leaks, blocked) - Refrigerant pipe line - Air conditioning amplifier |
- | |
| B1451 | Compressor Solenoid Circuit | - Air conditioning compressor - Harness and connector between air conditioning amplifier and air conditioning compressor - Air conditioning amplifier |
- | |
| U0100 | Lost Communication with ECM | - CAN communication system - ECM |
- | |
| U0131 | Lost Communication with Electric Power Steering ECU | - CAN communication system - Electric power steering ECU |
- | |
| U0155 | Lost Communication with Combination Meter | - CAN communication system - Combination meter assembly |
- | |
| B1479 | Flow Sensor Circuit | - Air conditioning compressor (flow sensor) - Harness and connector between flow sensor and air conditioning amplifier - Air conditioning amplifier |
Memorized (4 sec.)*3 (8.5 min. or more)*4 |
Tech Tips
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*1: If the ambient temperature is approximately -52.9°C (-63.22°F) or lower, DTC B1412 may be output even though the system is normal.
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*2: The air conditioning amplifier memorizes the DTC of the respective malfunction if it has occurred for the period of time indicated in the brackets.
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*3: Circuit is open or shorted.
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*4: Sensor is stuck