Table 2. Engine Troubleshooting with Codes for the 120M Motor Grader - Continued.
CDI FMI CODE
0262-03 5 Volt Sensor DC
Test Step 1. Test 5-Volt Supply
Supply Voltage Above Nor-
mal Code - 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.
Engine ECM C6.6 120M and
verify WP 0337-11 is active.
2. Turn ignition switch and battery
disconnect switch to the OFF
3. Disconnect the following:
a. Harness connector EA-C7
intake manifold pressure
b. Harness connector EA-C6
fuel rail pressure sensor.
Harness connector EA-C5
d. Harness connector FE-C6
the turbocharger air inlet
4. Disconnect the Engine ECM har-
Figure 3) from the Engine ECM
continuity between ECM harness
harness is shorted, replace engine
control wiring harness (WP 0080).
ure 3) terminal 46 and all other
EA-C1 terminals. There should be