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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 5. Test 8-Volt Return Cir-
Motor Speed Sensor #1
cuit for High Resistance or Open
Data Erratic, Intermittent or
in Cab Lower Wiring Harness.
Incorrect - Continued
1. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Greater -
sure resistance between P-C35
Replace cab lower wiring harness
terminal 45 (WP 0009, Figure 53)
(WP 0266).
and P-C34 terminal 21 (WP
Connect AF-C1 (WP 0009, Figure
0009, Figure 52).
61) on AH-C1 harness connector
(WP 0009, Figure 62).
Install nose front frame cover and
rear front frame cover on machine
(WP 0224).
Connect AH-C2 (WP 0009, Figure
57) on right front drive motor speed
sensor connector (WP 0009, Figure
58) (WP 0166).
Proceed to step 2.
Resistance Less Than 5.0 Ohms -
Replace AWD ECM (WP 0270).
Connect AF-C3 (WP 0009, Figure
51) on P-C34 (WP 0009, Figure 52)
(WP 0200).
Install rear front frame cover on
machine (WP 0224).
Connect AF-C1 (WP 0009, Figure
61) on AH-C1 harness connector
(WP 0009, Figure 62).
Install nose front frame cover on
machine (WP 0224).
Connect AH-C2 (WP 0009, Figure
57) on right front drive motor speed
sensor connector (WP 0009, Figure
58) (WP 0166).
Proceed to step 2.
2. Perform Speed Sensor Test (WP
Motor Speeds Not OK, 2321-02
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 2321-02
Code Not Active - Troubleshooting
complete.
0015-42


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