TM 5-3805-291-23-1
TROUBLESHOOTING WITH A DIAGNOSTIC CODE - CONTINUED
0009 00
Table 3. Powertrain Control - Continued.
(MID 081)
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
(e) At wiring harness connector for engine 1. If each resistance is greater than 5,000
0190 02 - Continued.
ECM, measure resistance between J1-
Ohms, go to Test 6.
38 (wire 450-YL) and all contacts used 2. If each resistance is not greater than
in wiring harness connectors.
5,000 Ohms, short is between J2-25 or
J1-38 and contact with low resistance.
Replace wiring harness in question (WP
0195 00 thru WP 0201 00).
6. Check signal frequency of engine speed tach
wire.
(a) Back-probe contact J1-38 (wire 450-
YL) at back of wiring harness
connector for engine ECM.
(b) Connect multimeter probe to ground.
(c) Turn battery disconnect and engine
start switches to ON position (TM 5-
3805-291-10).
(d) Start engine and run at low idle (TM 5-
3805-291-10).
(e) Measure signal frequency.
(f) Compare signal frequency to rpm
1. If frequency is 1/3 of engine rpm engine,
engine.
go to Test 7.
2. If ECM cannot detect signal frequency,
exit this procedure and repeat
procedures. If cause of failure is not
found, replace engine ECM (WP 0057
00).
3. If signal frequency is abnormally high,
exit this procedure and repeat
procedures. If cause of failure is not
found, replace engine ECM (WP 0057
00).
7. Check if diagnostic code is still present.
(a) Clean harness connector contacts.
(b) Reconnect all wiring harness
connectors.
(c) Turn engine start and battery
disconnect switches to ON position
(TM 5-3805-291-10).
(d) Start engine and run at low idle (TM 5-
3805-291-10).
0009 00-15
