TROUBLESHOOTING WITH A DIAGNOSTIC CODE - CONTINUED
Table 2. Machine Control System - Continued.
TEST OR INSPECTION
CID FMI CODE
1. If voltage is 8.0 ± 0.5 DCV, sensor
1. Check voltage at ECM.
supply voltage is correct. Verify same
(a) Turn battery disconnect switch and
diagnostic code is present. If diagnostic
engine start switch to ON position (TM
code is still present, replace machine
ECM (WP 0052 00).
(b) Check voltage at ECM harness
2. If voltage is not 8.0 ± 0.5 DCV, sensor
connector from contact J1-44 (wire
supply voltage is not correct. Go to Test
X800 OR) to contact J1-45 (J764 BR).
Do not disconnect wiring harness from
1. If resistance is greater than 5,000
2. Check for a short to ground.
(a) Turn engine start switch and battery
Ohms, verify same diagnostic code is
disconnect switch to OFF position (TM
present. If diagnostic code is still
present, replace machine ECM (WP
(b) Disconnect wiring harness from ECM
(WP 0052 00).
(c) At ECM harness connector, measure
to Test 3.
resistance between frame ground and
contact J1-45 (wire J764 BR).
1. If, after disconnecting a particular
3. Disconnect sensors.
sensor, resistance changes and is
(a) Engine start switch and battery
greater than 5,000 Ohms, sensor that
disconnect switch remain in OFF
was just disconnected has failed.
Replace sensor in question.
(b) One at a time, disconnect any sensor
2. If, after disconnecting all sensors,
that uses power supply from wiring
harness is shorted to ground. Replace
(c) After disconnecting each sensor, check
wiring harness in question WP 0169 00
resistance from frame ground to
thru WP 0175 00).
contact J1-45 at ECM harness