TROUBLESHOOTING WITH A DIAGNOSTIC CODE - CONTINUED
Table 2. Machine Control System - Continued.
TEST OR INSPECTION
CID FMI CODE
2. Check harness for an open circuit.
1231 05 -
to Test 3.
(a) Turn engine start switch and battery
disconnect switch to OFF position (TM 2. If resistance is greater than 5,000
Ohms, there is an open circuit in wire
C881 BU or wire T799 BR of wiring
(b) Disconnect wiring harness
harness. Replace wiring harness in
connector(s) from machine ECM (WP
question (WP 0169 00 thru WP 0175
(c) Jumper wire installed in Test 1 remains
(d) At wiring harness connector, measure
(wire C881 BU) to contact J1-54 (wire
1. If CID 1231 FMI 05 is active, replace
3. Verify diagnostic code remains active.
machine ECM (WP 0052 00).
(a) Inspect and clean harness connector
2. If CID 1231 FMI 05 is not active, initial
diagnostic code was probably caused
(b) Reconnect all harness connectors.
by a poor electrical connection at a
(c) Turn battery disconnect switch and
harness connector that was
engine start switch to ON position (TM
disconnected and reconnected.
Resume normal machine operation.
(d) Operate machine (TM 5-3805-290-
(e) Check status of CID 1231 FMI 05.