TM 5-3805-293-23-1
0011
Table 2. Engine Troubleshooting with Codes for the 120M Motor Grader - Continued.
CDI FMI CODE
ERROR/EVENT
CORRECTIVE ACTION
0549-02 Throttle Lock
11.
Turn the ignition switch and bat-
Switch Data Erratic, Intermit-
tery disconnect switch to the OFF
tent, or Incorrect - Contin-
position.
ued
12.
Disconnect connector FA-C17
(WP 0009, Figure 14) from
Engine ECM connector J1.
13. Install a jumper wire between har-
ness connector FA-C23 (WP
0009, Figure 17) terminals 20 and
14.
14. Using a digital multimeter, test for
Continuity - ECM faulty, replace
continuity between the harness
Engine ECM (WP 0067).
connector FA-C17 (WP 0009, Fig-
Connect connector R-C1 (WP 0009,
ure 14) terminal 51 and ground.
Figure 33) to connector P-C3 (WP
There should be continuity.
0009, Figure 34).
Connect harness connector A-C9
(WP 0009, Figure 30) to throttle hold
mode switch.
No Continuity - Rear chassis wiring
harness is open, replace rear chassis
wiring harness (WP 0189).
Connect connector R-C1 (WP 0009,
Figure 33) to connector P-C3 (WP
0009, Figure 34).
Connect harness connector A-C9
(WP 0009, Figure 30) to throttle hold
mode switch.
Test Step 7. Throttle Lock Switch
Automatic Position Open.
1. Disconnect harness connector A-
C9 (WP 0009, Figure 30) from
throttle lock switch.
2. Using a digital multimeter, mea-
Voltage Less Than 18 - 24 Volts -
sure for voltage between harness
Proceed to step 3.
connector A-C9 (WP 0009, Figure
Voltage Within 18 - 24 Volts -
30) terminal 6 and terminal 5
Replace throttle lock switch (WP
ground.
0275).
Voltage should be 18-24 Volts DC.
3. Disconnect connector R-C1 (WP
0009, Figure 33) from connector
P-C3 (WP 0009, Figure 34).
0011-139
Change 1