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Customer Interest for Temperature Warning Lamp/Indicator:|851901|Page 7641 > < Coolant Temperature Sending Unit
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Temperature Warning Lamp/Indicator: Customer Interest
Coolant Temperature - Warning Light Comes On

Applies To

5000S

19

Group

1984

Subject

Key Points

Number

Cooling System

Modification to prevent coolant temperature
warning light from coming on during normal

85-19-01

Part Identifier

vehicle operation

(Supersedes Group 19 85-01 April 19, 1985) C

July 12, 1985

If the coolant temperature warning light comes on without the engine overheating while operating with the A/C on, the following modifications can be
performed:

Parts required

Part No.

Description

431 959 455L

Fan motor (350W)

321 959 481 D

Thermo Switch

321 906 231 A

Housing

321 959 459

Grommet

111 971 959

Connector

N 900 842 02

Connector

Work Procedure

-

exchange positions of wires 1 and 2 in radiator fan wiring connector housing

-

remove 2-prong far thermoswitch from radiator and replace with new thermoswitch, Part No. 321 959 481D

-

cut rubber grommets off thermoswitch wiring and discard

Thermoswitch Housing Part No. 321 906 231A

Note The existing thermoswitch wires plus an additional wire (see below) will be connected to the new thermoswitch through grommet, Part

Customer Interest for Temperature Warning Lamp/Indicator:|851901|Page 7641 > < Coolant Temperature Sending Unit