| Circuit Diagram |


|
N |
Connector A |
Connector B |
Connector C |
|
1 |
Ventilation seat unit IGN1 |
Driver ventilation indicator(low) |
Ventilation heater power |
|
2 |
Driver blower power |
Driver ventilation indicator(mid) |
Driver heater power |
|
3 |
Driver blower speed |
Driver ventilation indicator(high) |
Driver heater ground |
|
4 |
Driver RPM input |
Dirver NTC (+) |
Ventilation heater groung |
|
5 |
Driver heater switch |
- |
Ventilation heater power |
|
6 |
Driver ventilation switch |
ILL (-) |
- |
|
7 |
ILL (+) |
Driver NTC (-) |
Passenger heater power |
|
8 |
Driver heater indicator(low) |
Driver blower ground |
- |
|
9 |
Driver heater indicator(mid) |
Passenger ventilation indicator(low) |
Passenger heater ground |
|
10 |
Driver heater indicator(high) |
Passenger ventilation indicator(mid) |
Ventilation heater groung |
|
11 |
Ventilation unit IGN2 |
Passenger ventilation indicator(high) |
|
|
12 |
Passenger blower power |
Passenger NTC (+) |
|
|
13 |
Passenger blower speed |
- |
|
|
14 |
Passenger blower RPM input |
- |
|
|
15 |
Passenger heater switch |
Passenger NTC (-) |
|
|
16 |
Passenger ventilation switch |
Passenger blower ground |
|
|
17 |
Detent |
|
|
|
18 |
Passenger heater indicator(low) |
||
|
19 |
Passenger heater indicator(mid) |
||
|
20 |
Passenger heater indicator(high) |
Component Location [Front Ventilation Seat] 1. Ventilation seat unit (Assist seat only) 2. Ventilation seat blower
Removal [Ventilation Blower] 1. Disconnect the negative (-) battery terminal. 2. Remove the front seat.
Oil Specification 1. The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed. 2. Compressor (PAG) oil varies according to compressor model.
Component Location 1. Heater unit assembly Compoents 1. Mode control actuator 2. Heater core case 3. Center duct seal 4. PTC heater 5. Heater core assembly 6. Heater case [LH] 7.