TM 9-2320-302-20
0013 00-7
ANTI-LOCK BRAKE SYSTEM TROUBLESHOOTING AND TESTING - CONTINUED
0013 00
DIAGNOSTICS - CONTINUED
A.
Blink Code: 1
B.
Blink Code: 2
C.
Blink Code: 4
Figure 8. System Configuration Codes.
Table 2. Blink Code Identification.
NOTE
Blink code switch is located on ABS Electronic Control Unit (ECU) behind passenger’s seat.
3.
Diagnostic Mode. To enter the diagnostic mode, press and hold the blink code switch for one second, then release.
FIRST DIGIT (TYPE OF FAULT)
SECOND DIGIT (SPECIFIC LOCATION OF FAULT)
1. No Faults
1. No Faults
2. ABS modulator valve
3. Too much sensor gap
4. Sensor short or open
5. Sensor signal erratic
6. Tooth wheel
1. Right front steer axle (curb side)
2. Left front steer axle (driver side)
3. Right forward/rear tandem drive axle (curb side)
4. Left forward/rear tandem drive axle (driver side)
5. Right rearmost tandem drive axle (curb side)
6. Left rearmost tandem drive axle (driver side)
7. System function
1. J1922 or J1939 datalink
2. ATC valve (not used on M915A3)
3. Retarder relay (third brake)
4. ABS warning lamp
5. ATC configuration (not used on M915A3)
6. Reserved for future use
8. ECU
1. Low power supply
2. High power supply
3. Internal fault
4. System configuration error
5. Ground
