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
0172-03 Intake Manifold Air
2. Turn ignition switch to the OFF
Temperature Sensor Voltage
position.
Above Normal - Continued
3. Disconnect the intake manifold
temperature sensor EA-C8 (WP
0009, Figure 23 harness connec-
tor.
4. Turn the ignition switch to the ON
position.
5. Using a digital multimeter, mea-
Voltage OK (5.0 0.05 volts) -
sure the engine coolant tempera-
Proceed to step 6.
ture sensor signal circuit 967-BU
Voltage More Than 5.05 Volts - Pro-
between EA-C8 (WP 0009, Figure
ceed to step 9.
23 harness connector terminal 1,
and ground.
Voltage should be 5.0 0.05 volts.
6. Install a jumper wire between the
intake manifold temperature sen-
sor harness connector EA-C8
(WP 0009, Figure 23 terminal 1,
and terminal 2.
7. Turn the ignition switch to the ON
position.
N OT E
Wait at least 30 seconds in order for diagnostic codes to become active.
8. Using MSD (WP 0006), select
0172 -04 Becomes Active - Sensor
Engine ECM C6.6 120M, and
faulty, replace intake manifold
check if diagnostic code 0172-04
temperature sensor (WP 0105).
is active.
0172 -03 Remains Active - Proceed
to Test Step 2.
9. Turn the ignition switch and
battery disconnect switch to the
OFF position.
10. Remove jumper wire from the
intake manifold temperature
sensor harness connector EA-C8
(WP 0009, Figure 23 terminal 1,
and terminal 2.
11. Disconnect the Engine ECM har-
ness connector EA-C1 (WP 0009,
Figure 3) from Engine ECM J2.
0011-103
Change 1
