TM 9-2330-335-14&P
0105-6
0105
DIAGNOSTIC TOOL (BLINK CODE CHECK) - CONTINUED
13. Repeat step 9. If there are no other existing faults in the system, the ABS indicator lamp will come ON, go OFF, and
remain OFF.
14. If you have just repaired a sensor gap fault, the ECU is “waiting” to see a 4-mph signal on sensed wheels. Until this 4 mph
is sensed by the ECU, the ABS indicator lamp on the trailer will remain ON.
END OF TASK
ECU/VALVE ASSEMBLY
000105
WARNING
Release all pressure from the air system before you disconnect any components. Pressurized air can
cause serious personal injury.
Removal
000105
1.
Release all pressure from the air system.
2.
Attach labels to identify all air lines.
3.
Disconnect the air lines from the ECU/Valve Assembly.
4.
Disconnect the power (or power/diagnostic) cable, additional relay valve cable (if used), and all sensor cables from the
ECU/Valve Assembly (Figure 5).
5.
Remove the ECU/Valve Assembly from its mounting location:
a.
Bracket-Mounted: Loosen and remove the two mounting bolts and lock nuts that hold the assembly to the cross
member. Remove the assembly.
b.
Nipple-Mounted to Air Tank: Unscrew the assembly from the air tank.
NOTE
•
The ECU/Valve Assembly is supplied with black protective caps on each sensor connector.
•
When a sensor cable is not plugged into a sensor connector, the black cap must remain on the
connector to protect it from dirt and contamination (Figure 5).