TM 5-3805-291-23-1
ELECTRICAL SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
0013 00
ETHER INJECTION SYSTEM TEST - CONTINUED
5.
Check operation of ECM.
a.
Place battery disconnect switch in OFF position (TM 5-3805-291-10).
b.
Check operation of ECM by creating an open wire at ECM.
(1)
Disconnect J1/P1 ECM connectors.
(2)
Fabricate a jumper wire long enough to reach from a terminal at ECM connector to engine ground stud.
Crimp a connector socket to one end of jumper wire.
(3)
Remove wire from terminal P1-20 at ECM connector. Install jumper wire into terminal location for sole-
noid. Ensure jumper wire is isolated from any other wire and from engine ground.
(4)
Connect J1/P1 ECM connectors.
(5)
Place battery disconnect switch in ON position (TM 5-3805-291-10).
(6)
Proceed to Diagnostic Overrides screen on ET.
(7)
Activate ether injection system. System will activate for 10 seconds.
(8)
Monitor Active Diagnostic Code screen on ET. Look for an FMI 05 code, and record result.
N OT E
Wait at least 30 seconds for diagnostic codes to become active.
c.
Check operation of ECM by creating a short at ECM.
(1)
Short jumper wire installed into ECM connector to engine ground.
(2)
Proceed to Diagnostic Overrides screen on ET.
(3)
Activate ether injection system. System will activate for 10 seconds.
(4)
Monitor Active Diagnostic Code screen on ET. Look for an FMI 06 code, and record result.
N OT E
Wait at least 30 seconds in order for diagnostic codes to become active.
d.
Place battery disconnect switch in OFF position (TM 5-3805-291-10).
Expected Results. An FMI 05 code is active when solenoid wire is open. An FMI 06 code is active when jumper
e.
wire is shorted to engine ground.
(1)
If results are OK, an FMI 05 code is active when solenoid wire is open. An FMI 06 code is active when
jumper wire is shorted to engine ground. ECM is operating properly. Problem is in wiring between ECM
and connector for solenoid. Replace wiring harness in question (WP 0195 00 and WP 0201 00). Ensure
seals are properly in place and connectors are securely connected. Verify repair eliminates problem.
(2)
If results are not OK, one of these conditions exists: An FMI 05 code is not active when wires are removed
from ECM connector. An FMI 06 code is not active when wire jumper is shorted to engine ground.
Replace ECM (WP 0057 00). Verify problem is resolved. If results are not OK, one of these conditions
exists: An 05 code is not active when wires are removed from ECM connector. An FMI 06 code is not
active when wire jumper is shorted to engine ground. Replace ECM (WP 0057 00). Verify problem is
resolved.
0013 00-50
