TM 5-3805-291-23-1
ELECTRICAL SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
0013 00
ENGINE FAN CONTROL SOLENOID CIRCUIT TEST - CONTINUED
N OT E
Wait at least 30 seconds for diagnostic codes to become active.
e.
Determine if problem is related to an open circuit diagnostic code 05 or a short circuit diagnostic code 06.
Expected Results. No diagnostic codes are active.
f.
(1)
If results are OK, problem may have been related to faulty connection in harness. Carefully inspect con-
nectors and wiring.
(2)
If results are not OK:
(a) Short circuit diagnostic code 06 is active. Proceed to step 3.
(b) Open circuit diagnostic code 05 is active. Proceed to step 4.
3.
Create open circuit at connector for engine fan control solenoid.
a.
Place battery disconnect switch in OFF position (TM 5-3805-291-10).
b.
Disconnect connector for engine fan control solenoid.
c.
Place battery disconnect switch in ON position (TM 5-3805-291-10).
d.
Access Active Diagnostic Code screen on ET. Check for an active open circuit diagnostic code 05 for engine fan
control solenoid.
e.
Place battery disconnect switch in OFF position (TM 5-3805-291-10).
Expected Results. Open circuit diagnostic code 05 is now active for engine fan control solenoid.
f.
(1)
If results are OK, short circuit diagnostic code 06 was active before disconnecting connector. Open circuit
diagnostic code 05 became active after disconnecting connector.
Install new engine fan control solenoid (WP 0217 00). Clear any logged diagnostic codes.
(2)
If results are not OK, there is a short circuit between harness connector for engine fan control solenoid and
ECM. Leave connector disconnected, and proceed to step 5.
4.
Create a short at connector for engine fan control solenoid.
a.
Place battery disconnect switch in OFF position (TM 5-3805-291-10).
b.
Fabricate jumper wire long enough to short terminals of connector for engine fan control solenoid. Crimp connec-
tor pins to each end of jumper wire.
c.
Install jumper wire between terminals 1 and 2 on harness side of connector.
d.
Place battery disconnect switch in ON position (TM 5-3805-291-10).
e.
Access Active Diagnostic Code screen on ET. Check for an active short circuit diagnostic code 06 for engine fan
control solenoid.
f.
Remove jumper wire.
g.
Place battery disconnect switch in OFF position (TM 5-3805-291-10).
0013 00-24
