TM-9-2330-335-14-P

SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)

SEPTEMBER 2008

TM-9-2330-335-14-P - Page 598 of 640

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).