TM 9-2320-302-20
0013 00-12
ANTI-LOCK BRAKE SYSTEM TROUBLESHOOTING AND TESTING - CONTINUED
0013 00
DIAGNOSTICS - CONTINUED
Table 5. Troubleshooting and Repair.
BLINK CODE
ACTION REQUIRED
REFERENCE
2-1
2-2
2-3
2-4
2-5
2-6
Check the ABS modulator valve, valve cable,
and connections.
Perform resistance check.
3-1
3-2
3-3
3-4
3-5
3-6
Adjust the wheel sensor to touch the tooth
wheel. Check the sensor gap. Check for loose
wheel bearings or excessive hub runout.
Perform sensor adjustment, sensor voltage test, or
Pro-link component test.
4-1
4-2
4-3
4-4
4-5
4-6
Check sensor, sensor cable, and connectors.
Perform resistance check.
5-1
5-2
5-3
5-4
5-5
5-6
Check for tire size mismatch or tooth wheel
difference.
Review tire size range.
6-1
6-2
6-3
6-4
6-5
6-6
Check for damaged tooth wheel.
7-1
Check for proper data link connection (J1922
and J1939)
Refer to wiring diagrams.
7-2
Check the ATC valve, valve cables, and
connectors. (Not used on M915A3)
Perform resistance check.
7-3
Check the brake relay connections.
Refer to wiring diagrams.
7-4
Check the ABS warning light connections.
7-5
Verify proper ATC set-up. (Not used on
M915A3)
7-6
Verify the accuracy of the blink code and clear
it from the ECU memory.
Review blink code diagnostics.
8-1
Check vehicle voltage and supply to the ECU
(11 to 14 volts).
Refer to wiring diagrams. Perform voltage check.
