Table 2. Engine Troubleshooting with Codes for the 120M Motor Grader - Continued.
CDI FMI CODE
0190-08 Engine Speed Sen-
Test Step 1. Test Signal Circuit.
N OT E
Pulse Width, or Period -
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 and ver-
ify 0190-08 is active.
3. Turn the ignition switch to the
Figure 12) harness connector
from the secondary engine speed
5. Turn the ignition switch to the ON
Voltage OK (7.2 - 8.8 volts) -
sure the voltage between EA-C3
Proceed to step 7.
Voltage Less Than 7.2 Volts-
connector terminal 1, and ground.
Proceed to Test Step 2.
Voltage should be 8.0 ± 0.8 volts.
7. Turn the ignition switch and bat-
tery disconnect switch to the OFF
8. Disconnect Engine ECM harness
ure 3) from Engine ECM J2.
less than 5.0 Ohms) - Proceed to
for continuity between EA-C3
connector terminal 2, and Engine
ECM harness connector EA-C1
harness is open, replace engine
control wiring harness (WP 0080).
There should be good continuity.