TM 10-3930-675-20-1
0009 00-1
COOLING FAN OPERATION AND FAN CONTROL TROUBLESHOOTING
0009 00
THIS WORK PACKAGE COVERS
Error Code 166 - Cooling Fan Speed, Wiring Circuit
Failure
Error Code 167 - Cooling Fan Speed, Short Circuit Fail-
ure
Error Code 426 - Fording Level Switch, Input Read
Incorrect
INITIAL SETUP
References
TM 10-3930-675-10
Current Supply (A34738.0200) (WP 0199 00-31)
ECS Electrical Servo (A34648.0200) (WP 0199 00-5)
NOTE
•
Refer to WP 0004 00 for additional troubleshooting guidance, information, and illustrations
that locate critical components.
•
Refer also to illustration at end of work package for component location.
Table 1. Error Code 166 - Cooling Fan Speed, Wiring Circuit Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 166 - Cooling Fan Speed, Wiring
Circuit Failure
1. Disconnect connector 6037 at
fan
control
valve,
turn
ignition
switch
to
ON
position and perform voltage
check.
If 20-25V is present at connector
6037, replace fan control valve
(WP 0174 00).
2. Check voltage between con-
nector X158 pin 9 and pin 10.
a. If voltage is present, check
continuity between con-
nector 6037 pin 1 and
connector X158 pin 9 and
between connector 6037
pin 2 and connector X158
pin 10.
If continuity is not present,
repair or replace connectors (WP
0111 00).
TEST OR INSPECTION-
DIAG SERVO
11(13)
OUTPUT/INPUT
FAN 0mA 0mA
BL.VALVE 0.00V 0mA
