Perkins 1204-E44TA - Cooling Fan Speed - Test

(Table 155, contd)
Troubleshooting Test Steps
Values Results
E. Activate the fan override.
F. Monitor the active diagnostic code screen on the electronic serv-
ice tool. Check and record any active diagnostic codes. Wait at least
30 seconds in order for the diagnostic code to become active.
Disable the fan override. Remove the jumper wire.
If the fault is still present, contact the Dealer Solutions
Network (DSN).
i06925581
Cooling Fan Speed - Test
Use this procedure to troubleshoot the electrical
system if a problem is suspected with the cooling fan
speed sensor. Also use this procedure if the
diagnostic code in Table 156 is active or easily
repeated.
Table 156
Diagnostic Code Table for Cooling Fan Speed
J1939 Code PDL Code Code Description Comments
1639-17
E1363 (1) Fan Speed : Low - least severe (1) The code is logged.
The engine cooling fan speed sensor provides a
signal to the Electronic Control Module (ECM). The
ECM controls fan speed by varying the current to the
fan control solenoid.
The engine cooling fan speed sensor receives a
supply voltage from the ECM. The sensor outputs a
frequency that is directly proportional to fan speed.
During the following procedure, refer to the electrical
schematic for the application.
Table 157
Required Tools
Tool Part Number
Part Description Qty
A
-
Tachometer Kit 1
Complete the procedure in the order in which the
steps are listed.
UENR4469-36 283
Circuit Tests
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