Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager. Manual - part 185
contained in the Fan Section. If the motor is noticeably
overheated(i.e., wire insulation melted, motor charred)
the system voltage may be too high. Check charging
system, see Group 8A, Battery/Starting/Charging Sys-
tem Diagnostics.
ELECTRIC FAN MOTOR TEST
EQUIPMENT REQUIRED
• Diagnostic Tool DRB II or equivalent
• Volt/Ohm Meter
• Wiring Diagrams Manual
TEST PROCEDURE
(1) Run the engine to normal operating temperature
(2) Check wiring connector in C25, C9, and C26 for
proper engagement, see Wiring Diagrams.
(3) Using a diagnostic tool, plug it into the diagnostic
connector rearward of the battery. Check the On-Board
Diagnostics (OBD) in the Single Board Engine Control
(Engine Controller) for fault codes, Refer to Group 14,
Fuel Injection for instructions.
(4) If fault code 88-12-35-55 is detected, go to Step 5.
(5) With the ignition switch in the run position, test
for battery voltage at single pin connector at the fan
relay. Voltage reading OK, go to Step 6. Voltage at 0-1
volt, go to Step 7.
(6) With the ignition off, disconnect the 60-way con-
nector from the Engine Controller (outboard of battery)
and return the ignition to the run position. Test for
battery voltage at cavity 31 of the 60-way connector
(Fig. 7). Voltage reading OK and female terminal is not
damaged, replace the Engine Controller. Voltage read-
ing 0, repair open or short in C27 circuit.
(7) With the ignition off, disconnect the 60-way con-
nector from the Engine Controller (outboard of bat-
tery)and return the ignition to the run position. Test
for battery voltage at the single pin connector at the
fan relay. Voltage reading OK, replace the Engine
Controller. Voltage reading 0-1 volt, go to Step 7.
(8) With ignition in the run position, test for battery
voltage at the blue wire (C27) in the 3-way connector of
the fan relay. Voltage reading OK, replace the fan relay.
Voltage reading 0, repair open or short, in C27 circuit.
(9) Turn ignition off, connect the 60-way connector
at the Engine Controller, and test the system.
FAN SHROUD
These fan shrouds may cover less than full radiator
frontal area to prevent the shroud from restricting
airflow at high speeds.
The shroud supports the electric fan motor and fan.
All other non A/C vehicles have a fan motor support
assembly instead of a shroud. For removal and instal-
lation Refer to Radiator Removal Section.
AUTOMATIC TRANSMISSION OIL COOLERS
Oil coolers are of two types, internal oil to coolant
type, mounted in the radiator lower tank (Fig. 8) or
external oil-to-air type mounted ahead of the radiator,
(Fig. 8).
Rubber oil lines feed the oil cooler and the automatic
transmission. Use only approved transmission oil
cooler hose. Since these are molded to fit space avail-
able, molded hoses are recommended.
Fig. 6 Electric Fan Motor (Typical)
Fig. 7 Engine Controller 60-Way Connector from
Terminal End
.
COOLING SYSTEM
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