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 TM 9-2330-331-14&P
0012 00
Table 2. Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ABS WARNING LIGHT
- Continued
NOTE
If blink codes 3, 4, 5, or 6 occur, wheel with fault must be rotated at a speed
higher than 4 mph either by towing or spinning while connected to the towing
vehicle. This will reset the ECU after corrective action is completed.
ABS Diagnostic Blink Codes
Blink Code Problem Area
Action
3
Sensor BU1
Check sensor installation. Replace sensor and sensor cables if
Roadside center
code continues after installation check (WP 0040 00-1).
4
Sensor YE1
Check sensor installation. Replace sensor and sensor cables if
Curbside center
code continues after installation check (WP 0040 00-1).
5
Sensor BU2
Check sensor installation. Replace sensor and sensor cables if
Roadside rear
code continues after installation check (WP 0040 00-1).
6
Sensor YE2
Check sensor installation. Replace sensor and sensor cables if
Curbside rear
code continues after installation check (WP 0040 00-1).
7
External ABS modulator
Verify proper electrical installation. Check power supply. If
valve
code continues, replace ECU (WP 0039 00-1).
9
Internal modulator failure,
Verify proper installation. If code continues, replace ECU
inlet valve #2
10
Internal modulator failure,
Verify proper installation. If code continues, replace ECU
inlet valve #1
11
Internal modulator failure,
Verify proper installation. If code continues, replace ECU
outlet valve
14
Power supply
Verify proper electrical installation. Check power supply. Refer
to towing vehicle TM if code continues.
15
ECU failure
Verify proper installation. If code continues, replace ECU
16
SAE J1708 failure
Replace ECU (WP 0039 00-1).
17
SAE J2497 (PLC) failure
Replace ECU (WP 0039 00-1).
18
Generic I/O failure
Verify proper electrical installation. Check power supply. Refer
to towing vehicle TM if code continues.
ROADSIDE
F
C
R
F
C
R
CURBSIDE
Figure 1. ABS Sensor Locations
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