AIR CONDITIONING SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Air Conditioning System
DTC Code Detection Item Trouble Area Memory*3 See page
B1411/11*1 Room Temperature Sensor Circuit

1. Room temperature sensor

2. Harness or connector between room temperature sensor and A/C amplifier

3. A/C amplifier

Memorized

(4 sec. or more)

Click here

B1412/12*2 Ambient Temperature Sensor Circuit

1. Ambient temperature sensor

2. Harness or connector between ambient temperature sensor and A/C amplifier

3. A/C amplifier

Memorized

(4 sec. or more)

Click here

B1413/13 Evaporator Temperature Sensor Circuit

1. Evaporator temperature sensor

2. Air conditioning harness

3. A/C amplifier

Memorized

(4 sec. or more)

Click here

B1417/17 Rear Evaporator Temperature Sensor Circuit

1. Rear air conditioning harness (rear evaporator temperature sensor)

2. Harness or connector between rear air conditioning harness (rear evaporator temperature sensor) and A/C amplifier

3. A/C amplifier

Memorized

(4 sec. or more)

Click here

B1418/18 Exhaust Gas Sensor Circuit

1. Smog ventilation sensor (emission gas sensor)

2. Harness or connector between smog ventilation sensor (emission gas sensor) and A/C amplifier

3. A/C amplifier

 -

Click here

B1419/19 Rear Room Temperature Sensor Circuit

1. Rear room temperature sensor

2. Harness or connector between rear room temperature sensor and A/C amplifier

3. A/C amplifier

Memorized

(4 sec. or more)

Click here

B1422/22 Compressor Lock Sensor Circuit

1. A/C compressor (A/C lock sensor)

2. Compressor drive belt

3. Harness or connector between A/C compressor and A/C amplifier

4. A/C amplifier

5. CAN communication system

 -

Click here

B1423/23 Pressure Sensor Circuit

1. A/C pressure sensor

2. Harness or connector between A/C pressure sensor and A/C amplifier

3. A/C amplifier

4. Expansion valve (blocked, stuck)

5. Condenser (blocked, deterioration of cooling capacity due to dirt)

6. Cooler dryer (moisture in the refrigerant cycle cannot be absorbed)

7. Cooling fan system (condenser cannot be cooled down)

8. A/C system (leaks, blocked)

 -

Click here

B1441/41 Air Mix Damper Control Servo Motor Circuit (Passenger Side)

1. Air mix control servo motor

2. Air conditioning harness

3. A/C amplifier

Memorized

(30 sec. or more)

Click here

B1442/42 Air Inlet Damper Control Servo Motor Circuit

1. Air inlet control servo motor

2. Air conditioning harness

3. A/C amplifier

Memorized

(30 sec. or more)

Click here

B1443/43 Air Outlet Damper Control Servo Motor Circuit

1. No. 1 air mix control servo motor (air outlet control servo motor)

2. Air conditioning harness

3. A/C amplifier

Memorized

(30 sec. or more)

Click here

B1446/46 Air Mix Damper Control Servo Motor Circuit (Driver Side)

1. No. 1 air mix control servo motor (air mix control servo motor)

2. Air conditioning harness

3. A/C amplifier

Memorized

(30 sec. or more)

Click here

B1447/47 Rear Air Mix Damper Control Servo Motor Circuit

1. Rear air mix control servo motor

2. Rear air conditioning harness

3. Harness or connector between rear air conditioning harness and A/C amplifier

4. A/C amplifier

Memorized

(30 sec. or more)

Click here

B1449/49 Rear Air Outlet Damper Control Servo Motor Circuit

1. Rear air outlet control servo motor

2. Rear air conditioning harness

3. Harness or connector between rear air conditioning harness and A/C amplifier

4. A/C amplifier

Memorized

(30 sec. or more)

Click here

B1451/51 Compressor Solenoid Circuit

1. A/C compressor (solenoid valve)

2. Harness or connector between A/C amplifier and A/C compressor (solenoid valve)

3. A/C amplifier

 -

Click here

B1461/61 Emission Gas NOx Sensor Circuit

1. Smog ventilation sensor (emission gas NOx sensor)

2. Harness or connector between smog ventilation sensor (emission gas NOx sensor) and A/C amplifier

3. A/C amplifier

 -

Click here

B1462/62 Room Humidity Sensor Circuit

1. Room humidity sensor (room temperature sensor)

2. Harness or connector between room humidity sensor (room temperature 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

99 Multiplex Communication Circuit CAN communication system Memorized

Click here

B14A2 Driver Side Solar Sensor Short Circuit

1. Solar sensor

2. Harness or connector between solar sensor and A/C amplifier

3. Harness or connector between solar sensor and main body ECU

4. Main body ECU

5. A/C amplifier

Memorized

(4 sec. or more)

Click here

B14A3 Front Passenger Side Solar Sensor Short Circuit

1. Solar sensor

2. Harness or connector between solar sensor and A/C amplifier

3. Harness or connector between solar sensor and main body ECU

4. Main body ECU

5. A/C amplifier

Memorized

(4 sec. or more)

Click here

B14B9*4 Open in Ion Generator Circuit

1. No. 1 ion generator sub-assembly

2. Harness or connector between No. 1 ion generator sub-assembly and A/C amplifier

3. Harness or connector between No. 1 ion generator sub-assembly and IG circuit

4. Harness or connector between No. 1 ion generator sub-assembly and body ground

5. A/C amplifier

Memorized

(12 sec. or more)

Click here

B14BA*5 Open in Rear Ion Generator Circuit

1. No. 2 ion generator sub-assembly

2. Harness or connector between No. 2 ion generator sub-assembly and A/C amplifier

3. Harness or connector between No. 2 ion generator sub-assembly and IG circuit

4. Harness or connector between No. 2 ion generator sub-assembly and body ground

5. A/C amplifier

Memorized

(12 sec. or more)

Click here

U0100 Lost Communication with ECM

1. CAN communication system

2. ECM

 -

Click here

U0131 Lost Communication with Electric Power Steering ECU

1. CAN communication system

2. Electric power steering ECU

 -

Click here

U0142 Lost Communication with Main Body ECU

1. CAN communication system

2. Main body ECU

 -

Click here

U0155 Lost Communication with Combination Meter

1. CAN communication system

2. Combination meter

 -

Click here