TM 10-3930-675-24-1
COOLING FAN OPERATION AND FAN CONTROL TROUBLESHOOTING - CONTINUED
0010 00
Table 1. Error Code 166 - Cooling Fan Speed, Wiring
Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 166 - Cooling Fan Speed, Wiring
d. Replace damaged ECU (790)
Circuit Failure - Continued.
(WP 0080 00).
3. Remove the rear radiator top a. If resistance (8 to 10 Ohms) is
grating to access to the cooling
not as specified, replace the
fan flow control valve. Unplug
cooling fan flow control valve
the harness and check the
(WP 0263 00).
resistance of the valve solenoid b. If specified resistance is found,
(6037). Should be 8 to 10
check continuity of wires 1589
Ohms.
and 15810 (WP 0048 00-8).
c. Replace damaged open or
shorted harness (WP 0113 00
00).
0010 00-2
