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
5. If removed, install splash shield
1278-03 Apron Lower
(Figure 3, Item 4), four bushings
Solenoid Voltage Above
(Figure 3, Item 3), washers
Normal Continued
(Figure 3, Item 2), and bolts
(Figure 3, Item 1) on machine.
6. If lowered, install left frame access
plate (WP 0376).
7. Install cover (Figure 2, Item 3), four
washers (Figure 2, Item 1), and
bolts (Figure 2, Item 2) on
machine.
8. Install hydraulic tube clamp
(Figure 1, Item 4), two washers
(Figure 1, Item 2), and bolts
(Figure 1, Item 3) on mounting
boss (Figure 1, Item 1) and
hydraulic tube (Figure 1, Item 5).
9. Troubleshooting complete.
NOTE
1278-05 Apron Lower
Solenoid Current Below
Always inspect harness connectors that are involved in the circuit. Poor
Normal
connections can often be the cause of a problem in an electrical circuit.
Verify that all connections in the circuit are clean and secure and that all
connections are in good condition. If a problem with the connection is
found, correct the problem and verify that this malfunction or diagnostic
code is active before performing this procedure.
Perform open or short-circuit test at each harness connection to identify
the correct harness to replace.
Tag all wiring harnesses to aid in installation.
Perform this test only if condition is active.
DIAGNOSTIC CODE SET CONDITION
Transmission/Chassis ECM Detects Below Normal Current on Apron Lower
Solenoid Circuit R770.
POSSIBLE CAUSE
Implement Wiring Harness High Resistance or Open.
Draft Frame and Bowl Side Wiring Harness High Resistance or Open.
Hitch Wiring Harness High Resistance or Open.
Main Cab Wiring Harness High Resistance or Open.
Apron Lower Solenoid.
Transmission/Chassis ECM.
0073-7
