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
2771-03 Throttle Hold Set/
Test Step 1. Verify Diagnostic Code
Accel Switch Above Normal
and Parameter Status.
- Continued
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.
1. Connect MSD (WP 0006). Select
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 2771-03 is
Diagnostic Code 2771-03 Active -
active.
Proceed to Test Step 2.
Test Step 2. Test Throttle Hold Set/
Accel Switch Circuit.
1. Turn the ignition switch and bat-
tery disconnect switch to the OFF
position.
2. Remove control switch panel (WP
0275).
3. Disconnect the control switch
panel harness connector A-C11
(WP 0009, Figure 41) from throttle
hold set/accel switch.
4. Using a digital multimeter, test for
Continuity - Proceed to step 5.
continuity between throttle hold
No Continuity - Replace throttle hold
set/accel switch connector termi-
set/accel switch (WP 0275).
nal 2 and terminal 1.
5. While the throttle hold set/accel
Continuity - Proceed to Test Step 3.
switch is depressed use a digital
No Continuity - Replace throttle hold
multimeter and test for continuity
set/accel switch (WP 0275).
on throttle hold set/accel switch
connector pin 2 and 3.
Change 1
0011-190
