12
Test Procedures
TROUBLESHOOTING AND ELECTRICAL
SYSTEM: DIESEL VEHICLES
WARNING
• Allow surfaces to cool adequately before touching them.
2116
Figure 12-18
Fan Thermostat Switch Test Setup
TEST PROCEDURE 11 – Fan Motor
See General Warnings, Section 1, Page 1-2.
The fan relay activates the radiator fan when the engine coolant reaches a temperature range of 187 °F to 198 °F
(86 °C to 92 °C) and closes the fan thermostat switch.
Fan Motor
1.
Disable the vehicle.
See Disabling the Vehicle on page 1-3.
2.
Disconnect the two-pin connector from the thermostat switch
and install a jumper
wire between the frame and the 18-gauge yellow/black wire in the connector.
3.
With the Forward/Reverse handle still in the NEUTRAL position, turn the key switch to the ON position. The fan
motor should run. If not, test voltage to fan motor.
Voltage to Fan Motor
1.
Disable the vehicle.
See Disabling the Vehicle on page 1-3.
2.
Raise the hood.
3.
Disconnect the two-pin connector from the fan motor
.
4.
Disconnect the two-pin connector from the thermostat switch
.
5.
Place a jumper wire between the frame and the 18-gauge yellow/black wire at the two-pin connector disconnected
from the thermostat switch.
6.
Set a multimeter to measure 20 VDC.
7.
Place the multimeter probes into each terminal of the two-pin connector disconnected from the fan motor (wire
harness side).
Page 12-24
2008-2012 All-Wheel Drive Maintenance and Service Manual
Summary of Contents for Carryall 295 SE
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