REMOVING AND INSTALLING
AND CHECKING COOLANT
TEMPERATURE SENSOR

The temperature sensor measures the
engine temperature and sends this
information in the form of a resistance
value to the control unit.
The resistance value drops with rising
temperature (NTC).

1 = Plug connection
2 = Housing
3 = NTC resistor

Removing and Installing:

Pull off plugs (1 and 2).
Lift fuel injector plug plate slightly.

Unscrew temperature gage (2).
Unscrew temperature sensor (1).

Installation:
Check code number (1).
Replace seal (2).
FD = Manufacturing date
Fill and bleed cooling system - see
Group 17.


17 00 000

Checking:

Connect Jetronic test lead 61 1 440.
Check nominal value with an ohmmeter.
To check the entire temperature range,
remove and place the temperature
sensor in a water bath heated to the
testing temperature and measure the
resistance with an ohmmeter.

Specifications:
- 10 ± 1° C (+ 14 ± 2° F)
= 8.2 ... 10.5 k-ohms /
+ 20 ± 1° C (+ 68 ± 2° F)
= 2.2 ... 2.7 k-ohms /
+ 80 ± 1° C (+ 176 ± 2° F)
= 0.3 ... 0.36 k-ohm