No. | Item | Failure | FAIL SAFE Function |
1 | In-car temperature sensor | Open/Short | 25°C alternate value control |
2 | Ambient temperature sensor | Open/Short | 20°C alternate value control |
3 | Pin thermo sensor | Open/Short | -2°C alternate value control |
4 | Water temperature sensor | Open/Short | -20°C alternate value control |
5 | Temperature door potentiometer | Open/Short setup temperature | For 17°C to 24.5°C, Set to maximum cooling position. For 25°C to 32°C, Set to maximum heating position. |
After the display panel flickers three times every 0.5 second, the corresponding error code flickers on the setup temperature display panel every 0.5 secondand will show two figures.
If error code is more than two, each code flickers 2 times in sequence.
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table below.
DTC code | Detection item | Trouble area |
00 | Normal | - |
11 | Open INCAR Sensor circuit | ● Incar sensor ● Harness or connector between incar sensor and A/C control assembly ● A/C control assembly |
12 | Shorted INCAR Sensor circuit | |
13 | Open Ambient sensor circuit | ● Ambient sensor ● Harness or connector between ambient sensor and A/C control assembly. ● A/C control assembly. |
14 | Shorted Ambient sensor circuit | |
15 | Open water temp. sensor | ● Water temp. sensor ● Harness or connector between water temp. sensor and A/C control assembly. ● A/C control assembly |
16 | Shorted water temp. sensor | |
17 | Open pin thermo sensor | ● Pin thermo sensor ● Harness or connector between evap. sensor and A/C control assembly ● A/C control assembly |
18 | Shorted pin thermo sensor | |
19 | Open or shorted temp. door potentiometer | ● Harness or connector between temp. door potentiometer and A/C control assembly |
20 | Defective temp. door potentiometer | ● Temp. door potentiometer |