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Table 1. All-Wheel Drive (AWD) Code Troubleshooting - Continued.
Table 1. All-Wheel Drive (AWD) Code Troubleshooting - Continued.

Maintenance Manual For Motorized Road Grader Model 120M - 1
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TM 5-3805-293-23-1
0015
Table 1. All-Wheel Drive (AWD) Code Troubleshooting - Continued.
CDI FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
2321-02 Right Front Drive
Test Step 6. Test Right Front Drive
Motor Speed Sensor #1
Motor Speed Sensor #1 Circuit
Data Erratic, Intermittent or
and 8-Volt Return Circuit For Short
Incorrect - Continued
to Voltage.
1. Turn ignition switch and battery
disconnect switch to the OFF
position.
2. Remove jumper wire from AH-C2
terminal 1 and terminal 2 (WP
0009, Figure 57).
3. Turn battery disconnect switch
and ignition switch to the ON
position.
4. Using a digital multimeter, mea-
Voltage Greater Than 0.3 Volts -
sure voltage of circuit between
Proceed to step 5.
AH-C2 terminal 3 (WP 0009, Fig-
Voltage 0.3 Volts or Lower - Pro-
ure 57) and ground.
ceed to Test Step 11.
5. Using a digital multimeter, mea-
Voltage Greater Than 0.3 Volts -
sure voltage of circuit between
Proceed to Test Step 7.
AH-C2 terminal 2 (WP 0009, Fig-
Voltage 0.3 Volts or Lower - Pro-
ure 57) and ground.
ceed to Test Step 11.
Test Step 7. Test for Shorted Right
Motor Speed Harness.
1. Turn ignition switch and battery
disconnect switch to the OFF
position.
2. Remove nose front frame cover
from machine (WP 0224).
3. Disconnect clutch drive solenoid
AF-C1 harness connector (WP
0009, Figure 61) from right motor
speed AH-C1 harness connec-
tor (WP 0009, Figure 62).
4. Using a digital multimeter, test for
No Continuity - Proceed to step 5.
continuity between AH-C1 termi-
Continuity - Replace right motor
nal 3 and all other circuits in AH-
speed harness (WP 0202).
C1 (WP 0009, Figure 62). There
Proceed to step 6.
should be no continuity.
5. Using a digital multimeter, test for
No Continuity - Proceed to Test
continuity between AH-C1 termi-
Step 8.
nal 2 and all other circuits in AH-
Continuity - Replace right motor
C1 (WP 0009, Figure 62). There
speed harness (WP 0202).
should be no continuity.
Proceed to step 6.
0015-43


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