TM 5-3805-296-23-2
0073
Table 1. 1278 Apron Lower Proportional Solenoid Diagnostic Codes Continued.
073
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 4. Test Hitch Wiring
1278-05 Apron Lower
Harness for High Resistance or
Solenoid Current Below
Open.
Normal Continued
1. Remove jumper wire from
terminal 8 and terminal 10
of connector AE-C5
(WP 0012, Figure 145).
2. Connect jumper wire between
terminal 8 and terminal 10
of connector E-C2
(WP 0012, Figure 143).
3. Lower left frame access plate
(WP 0376).
4. Remove four bolts
(Figure 6, Item 1), washers
(Figure 6, Item 2), bushings
(Figure 6, Item 3), and splash
shield (Figure 6, Item 4) from
machine.
Figure 6. Splash Shield and Retaining Hardware.
0073
5. Disconnect connector E-C1
(WP 0012, Figure 140)
from connector W-C3
(WP 0012, Figure 139).
6. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Proceed to Test Step 5.
between connector E-C1
Resistance Greater Than 5.0 Ohms
terminal 8 and terminal 10
Replace hitch wiring harness
(WP 0012, Figure 140).
(WP 0401).
Proceed to Test Step 6.
