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 TM 9-2320-364-20-1
2-13. DDEC II TROUBLESHOOTING (CONT).
D5 ENGINE BRAKE INOPERATIVE.
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Tool Kit, General Mechanic's: Automotive
Engine OFF, (TM 9-2320-364-10)
(Item 74, Appendix G)
Parking brake applied, (TM 9-2320-364-10)
DDEC Repair Kit (Item 15, Appendix G)
Wheels chocked, (TM 9-2320-364-10)
Reader, Diagnostic (Item 53, Appendix G)
Top engine access cover opened,
(TM 9-2320-364-10)
References
TM 9-2320-364-10
START
1.
KNOWN INFO
TEST OPTIONS
DDR test.
Engine brake faulty.
Is DDEC ECM operating
engine brake properly?
REASON FOR QUESTION
POSSIBLE PROBLEMS
If DDR always displays OFF,
DDEC ECM faulty.
DDEC ECM is faulty.
Damaged DDEC ECM terminals
or connectors.
Go to Electrical
Troubleshooting
NO
(Para 2-20)
Faults 34 and 35.
YES
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