Table 2. Engine Troubleshooting with Codes for the 120M Motor Grader - Continued.
CDI FMI CODE
0549-02 Throttle Lock
Test Step 1. Verify Diagnostic Code
Switch Data Erratic, Intermit- and Parameter Status.
tent, or Incorrect - Contin-
N OT E
· Always inspect the harness connectorsthat are involved in the circuit.
Poor connections can often be the cause of a problem in an electrical
circuit. Verify that all connections in the circuit are clean and secure,
and that all connections are in good condition. If a problem with a
connection is found, correct the problem and verify that this diagnostic
code is active before performing this procedure.
Perform open or short circuit test ateach harness connection to identify
correct harness to replace.
Perform this test only if condition is active.
Engine ECM C6.6 120M.
2. Start and run the engine.
N OT E
Wait at least 30 seconds in order for diagnostic codes to become active.
3. Verify diagnostic code 0549-02 is
4. Turn the engine OFF.
5. Turn the ignition switch to the ON
6. Position the throttle hold mode
switch to the OFF position (TM 5-