Scheme 48
[Connector Pin Function]
| Connector | PIN NO. | Function | Connector | PIN NO. | Function |
|---|---|---|---|---|---|
| Connector (B) | 1 | TAIL LAMP | Connector (B) | 14 | RHEOSTAT (ILL-) |
| 2 | BATTERY | 15 | FET (G) | ||
| 3 | A/C OUT PUT | 16 | FET (D) | ||
| 4 | MODE ACT'R (VENT) | 17 | TEMP ACT'R F/B | ||
| 5 | MODE ACT'R (DEF) | 18 | MODE ACT'R F/B | ||
| 6 | TEMP ACT'R (COOL) | 19 | INTAKE ACT'R F/B | ||
| 7 | TEMP ACT'R (WARM) | 20 | EVAP SENSOR (+) | ||
| 8 | INTAKE ACT'R (FRE) | 21 | BLOWER MOTOR (+) | ||
| 9 | INTAKE ACT'R (REC) | 22 | A/C SELECT SIGNAL | ||
| 10 | DEF SELECT SIGNAL | 23 | DEF INDICATOR OUTPUT | ||
| 11 | SENSOR REF(+5V) | 24 | SENSOR GND | ||
| 12 | 25 | ||||
| 13 | IGN2 | 26 | GND |
CONNECTOR PIN FUNCTION CHART (MANUAL)
Scheme 49
Scheme 50
Scheme 51
- Disconnect the negative (-) battery terminal.
- Remove the crash pad center lower garnish (A).
- Remove the heater & A/C controller (A) after loosening 4 screws.
- Disconnect the connector (A).
- Installation is the reverse order of removal.
Scheme 52
| Connector | PIN NO. | Function | Connector | PIN NO. | Function |
|---|---|---|---|---|---|
| Connector (A) | 1 | TAIL LAMP | Connector (B) | 1 | SENSOR REF(+5V) |
| 2 | BATTERY | 2 | AQS SIGNAL | ||
| 3 | A/C OUTPUT | 3 | AMB SENSOR(+) | ||
| 4 | A/C SELECT SIGNAL | 4 | |||
| 5 | 5 | INCAR SENSOR(+) | |||
| 6 | K-LINE | 6 | EVAP. SENSOR(+) | ||
| 7 | 7 | WATER TEMP SENSOR(+) | |||
| 8 | DEF SELECT SIGNAL | 8 | SENSOR REF(+5V) | ||
| 9 | DEF INDCATOR OUTPUT | 9 | FET (G) | ||
| 10 | 10 | FET (D) | |||
| 11 | 11 | BLOWER MOTOR (+) | |||
| 12 | IGN2 | 12 | SENSOR GND | ||
| 13 | IGN2 | 13 | TEMP ACT'R DR (COOL) | ||
| 14 | RHEOSTAT | 14 | TEMP ACT'R DR (WARM) | ||
| 15 | 15 | DR PHOTO (-) | |||
| 16 | TEMP ACT'R PS (COOL) | 16 | PS PHOTO (-) | ||
| 17 | TEMP ACT'R PS (WARM) | 17 | INCAR MOTOR (-) | ||
| 18 | TEMP ACT'R PS F/B | 18 | TEMP ACT'R DR F/B | ||
| 19 | MODE ACT'R (VENT) | 19 | BLOWER ON SIGNAL | ||
| 20 | MODE ACT'R (DEF) | 20 | |||
| 21 | MODE ACT'R F/B | 21 | |||
| 22 | INTAKE ACT'R (FRE) | 22 | |||
| 23 | INTAKE ACT'R (REC) | ||||
| 24 | INTAKE ACT'R F/B | ||||
| 25 | GND | ||||
| 26 | GND |
CONNECTOR PIN FUNCTION CHART (FULL AUTOMATIC)
Scheme 53
Scheme 54
Scheme 55
Scheme 56
- Self-diagnosis process
- How to read self-diagnostic code After the display panel flickers three times every 0.5 second, the corresponding fault code flickers on the setup temperature display panel every 0.5 second and will show two figures. Codes are displayed in numerical format Fault code SELF-DIAGNOSIS CODE CHART Fault code Fail description Control unit DTC 00 - Normal 11 B1234 In-car temperature sensor open 12 B1233 In-car temperature sensor short 13 B1238 Ambient temperature sensor open 14 B1237 Ambient temperature sensor short 15 B1202 Water temperature sensor open 16 B1203 Water temperature sensor short 17 B1242 Evaporator temperature sensor open 18 B1241 Evaporator temperature sensor short 19 B1245 Temperature control actuator feed back open (Drive's) 19 B1246 Temperature control actuator feed back short (Drive's) 20 B2406 Temperature control actuator failure 21 B1249 Mode control actuator open 21 B1250 Mode control actuator short 22 B2409 Mode control actuator failure 25 B1208 Intake potentiometer open 25 B1209 Intake potentiometer short 26 B2408 Intake potentiometer failure 32 B1204 Temperature control actuator open (Passenger's) 32 B1205 Temperature control actuator short (Passenger's) 33 B2415 Temperature control actuator failure
- Fault code display Continuance operation : DTC code is one. Continuance operation : DTC code is more two. STEP operation Nomal or one fault code is same as a continuance operation. DTC code os more two.
- Diagnostic procedure refer to DTC code.
- Fail safe In-car temperature sensor: Control with the value of 25°C (77°F) Ambient temperature sensor: Control with the value of 20°C (67°F) Evaporator temperature sensor: Control with the value of -2°C (28.4°F) Temperature sensor : Control with the value of -2°C (28.4°F) Temperature control actuator (Air mix potentiometer): If temperature setting 17°C-24.5°C, fix at maximum cooling position. If temperature setting 25°C-32°C, fix at maximum heating position. Mode control actuator (Direction potentiometer): Fix vent position, while selecting vent mode. Fix defrost position, while selecting all except vent mode. Intake control actuator: Fix fresh position, while selecting fresh mode. Fix recirculation position, while selecting recirculation mode.
Scheme 57
Scheme 58
Scheme 59
- Disconnect the negative (-) battery terminal.
- Remove the crash pad center lower garnish (A).
- Remove the heater & A/C controller (A) after loosening 4 screws.
- Disconnect the connector (A).
- Installation is the reverse order of removal.