TM-9-2320-283-13-P
ANTI-LOCK BRAKE SYSTEM (ABS) M915A1
TECHNICAL MANUAL; OPERATOR AND FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST (RPSTL)
AUGUST 2012
TM-9-2320-283-13-P - Page 75 of 400
TM 9-2320-283-13&P
0012
0012-11
Table 5. ECU–Continued.
2nd Blink Code
Fault
Corrective Action
8
ECU (16)
9
ECU (17)
10
ECU (18)
11
ECU (1A)
12
ECU (1B)
13
ECU (80)
Table 6. Miscellaneous.
1st Blink Code
Location
Corrective Action
12
Miscellaneous
2nd Blink Code
Fault
Corrective Action
1
Stop lamp switch not
detected
a. ECU has not detected the presence of stop lamp switch
since ignition power was applied (note: stop lamp switch
input may be applied to the ECU controller using either
hardwire input of J1939).
b. Check for brake switch input into ECU (see system wiring
schematic). With service brake released, check for presence
of stop lamp bulb. With service brake applied, verify
system voltage is now present at stop lamp switch input to
ECU.
c. Check for damaged wiring between ECU, stop lamp switch,
and bulb.
d. Check for corroded or damaged connectors.
e. Check for damaged or reversed J1939 wiring.
f. Check for corroded or damaged connectors on J1939 link.
g. Verify presence of engine ECU on J1939 link.
h. Verify ECU configuration.
2
Stop lamp switch defective
a. Apply and release service brake. Check for brake switch
input into ECU (see system wiring schematic).
b. With service brake released, check for presence of stop
lamp bulb.
c. With service brake applied, verify system voltage is now
present at stop lamp switch input to ECU.
d. Check for damaged wiring between ECU, stop lamp switch,
and bulb.
e. Check for corroded or damaged connectors.
f. Check for reversed J1939 wiring.
g. Check for corroded or damaged connectors on J1939 link.
h. Verify presence of engine ECU on J1939 link.
i. Verify ECU configuration.
DIAGNOSTIC TROUBLE CODE TABLES–CONTINUED
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