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TM 9-2320-364-20-2
2-1470
34. ENGINE BRAKE DOES NOT OPERATE IN LOW (CONT).
12.
Repair wire 211
(see schematic
Fig 2-38) or notify
DS Maintenance.
Verify repair, go to
Step 18 of this Fault.
YES
NO
Reverse light operates
indicating 10 to 14 vdc to wire
1871.
Dash lights operate indicating
10 to 14 vdc to circuit breaker
CB7.
Engine brake harness OK.
Circuit breaker CB7 OK.
Wire 1712 OK.
Engine brake switch OK.
Wire 1713 OK.
Wire 1711 OK.
Wire 508 OK.
DDEC ECM OK.
TRANS relay R7 OK.
Wire 1839 OK.
Wire 211 faulty.
Relay R8 wire 1871 faulty.
Wire 213 faulty.
ATEC ECU faulty.
Retarder relay R8 faulty.
Wire 1716 faulty.
Circuit breaker CB11 wire 1871
faulty.
Wire 1711 faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
If continuity is not measured,
wire 211 is faulty.
WARNING
Is continuity measured on
wire 211 between connector
MC9, terminal 3F and retarder
relay R8, terminal 30?
Read WARNING
on Page 2-1471
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