| Circuit Diagram |

|
NO |
Description |
|
1 |
ECU Battery(+) |
|
2 |
ECU Battery(+) |
|
3 |
Passenger heater power |
|
4 |
Passenger NTC (+) |
|
5 |
Passenger heater indicator (Low) |
|
6 |
- |
|
7 |
Passenger heater indicator (High) |
|
8 |
- |
|
9 |
ILL (-) |
|
10 |
Passenger heater switch |
|
11 |
Passenger NTC (-) |
|
12 |
Passenger heater GND |
|
13 |
ECU GND |
|
14 |
IGN 1 |
|
15 |
IGN 2 |
|
16 |
Drive heater power |
|
17 |
Drive NTC (+) |
|
18 |
Drive heater indicator (Low) |
|
19 |
- |
|
20 |
Drive heater indicator (High) |
|
21 |
- |
|
22 |
DETENT |
|
23 |
Drive heater switch |
|
24 |
Drive NTC (-) |
|
25 |
Drive heater GND |
|
26 |
ECU GND |
Component Location [Front Seat Heater] 1. Seat heater unit (Assist seat only) 2. Front seat cushion heater 3.
Inspection Front Seat Heater 1. Check for continuity and measure the resistance between terminals No 3 and No 6.
Description The PTC (Positive Temperature Coefficient) heater is installed at the exit or the backside of heater core. The PTC heater is an electric heater using a PTC element as an auxiliary heating device that supplements deficiency of interior heat source in highly effective diesel engine.