TROUBLESHOOTING WITH A DIAGNOSTIC CODE - CONTINUED
Table 2. Machine Control System - Continued.
TEST OR INSPECTION
CID FMI CODE
2. Check brake charging solenoid energize
1. If resistance measurement is greater
1231 04 -
circuit for a short to ground.
than 5,000 Ohms, go to Test 3.
(a) Turn engine start switch and battery
2. If each resistance measurement is not
disconnect switch to OFF position (TM
greater than 5,000 Ohms, there is a
short between J1-68 (wire C881 BU)
disconnected from wiring harness.
measurement. Replace wiring harness
(c) Disconnect wiring harness
in question (WP 0169 00 thru WP 0175
connector(s) from machine ECM (WP
(d) At wiring harness connector, measure
(wire C881 BU) to all contacts used in
ECM wiring harness connectors.
3. Verify diagnostic code remains active.
1. If CID 1231 FMI 04 is active, replace
(a) Inspect and clean harness connector
machine ECM (WP 0052 00).
2. If CID 1231 FMI 04 is not active, initial
(b) Reconnect all harness connectors.
diagnostic code was probably caused
(c) Turn battery disconnect switch and
by a poor electrical connection or a
engine start switch to ON position (TM
short at a harness connector that was
disconnected and reconnected.
(d) Operate machine (TM 5-3805-290-
Resume normal machine operation.
(e) Check status of CID 1231 FMI 04.