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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
2320-02 Left Front Drive
Resistance Less Than 5.0 Ohms -
Motor Speed Sensor #2
Replace AWD ECM (WP 0270).
Data Erratic, Intermittent or
Connect AF-C3 (WP 0009, Figure
Incorrect - Continued
51) on P-C34 (WP 0009, Figure 52)
(WP 0200).
Install rear front frame cover on
machine (WP 0224).
Connect AF-C2 (WP 0009, Figure
63) on AK-C1 (WP 0009, Figure 64).
Install nose front frame cover on
machine (WP 0224).
Connect AK-C2 (WP 0009, Figure
59) on left front drive motor speed
sensor connector (WP 0009, Figure
60) (WP 0166).
Proceed to step 2.
2. Perform Speed Sensor Test (WP
Motor Speeds Not OK, 2320-02
0023) and verify motors speeds
Code Active - Repeat
are 920 50 rpm in forward and -
troubleshooting code from the
920 50 rpm in reverse.
beginning.
Motor Speeds OK and 2320-02
Code Not Active - Troubleshooting
complete.
Test Step 6. Test Left Front Drive
Motor Speed Sensor #2 Circuit
and 8-Volt Return Circuit For Short
to Voltage.
1. Turn ignition switch and battery
disconnect switch to the OFF
position.
2. Remove jumper wire from AK-C2
terminal 1 and terminal 2 (WP
0009, Figure 59).
3. Turn battery disconnect switch
and ignition switch to the ON
position.
Voltage Greater Than 0.3 Volts on
4. Using a digital multimeter, mea-
One or More Test Points - Proceed
sure voltage between AK-C2 ter-
to Test Step 7.
minal 2 (WP 0009, Figure 59)
and ground.
Voltage 0.3 Volts or Lower on Both
Test Points - Proceed to Test Step
11.
0015-24


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