Installation; Radiator Fan Description; Operation - Chrysler PT Cruiser Service & Repair Manual

PT
RADIATOR DRAINCOCK (Continued)
Fig. 17 Draincock
1 - RADIATOR TANK
2 - DRAINCOCK

INSTALLATION

(1) Align draincock stem to radiator tank opening.
(2) Push draincock into the radiator tank opening.
(3) Tighten the draincock by turning clockwise
until it stops.
(4) Fill the cooling system (Refer to 7 - COOLING/
ENGINE - STANDARD PROCEDURE).
RADIATOR FAN
DESCRIPTION
The radiator cooling fan is a dual-speed electric
motor driven fan. The radiator fan assembly includes
an electric motor, fan blade, and a support shroud
that is attached to the radiator (Fig. 18). The radia-
tor fan is serviced as an assembly.

OPERATION

Radiator fan operation is control by the Powertrain
Control Module (PCM) with inputs from the temper-
ature of the coolant, which is sensed by the coolant
temperature sensor, and vehicle speed which is mea-
sured by the vehicle speed sensor. The PCM turns on
the fan through either the high or low speed fan
relay. The PCM provides a ground to the relay's con-
trol circuit. The fan relays are located in the Power
Distribution Center (PDC) (Fig. 19). Refer to the
label beneath the PDC cover for location of fan
relays.
Refer to Radiator Fan Operation Chart for fan
operation specifications. For fan circuit wiring dia-
grams, refer to WIRING DIAGRAMS.
ENGINE - 1.6L SOHC
Fig. 18 Radiator Fan
1 - RADIATOR FAN SHROUD
2 - SCREWS
3 - SCREWS
Fig. 19 Power Distribution Center (PDC)
1 - PCM
2 - PDC
If the cooling fan is inoperative or a Diagnostic
Trouble Code (DTC) related to fan control has been
set, refer to the appropriate Powertrain Diagnostic
Information for diagnostic procedures.
7 - 23