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TM 9-2320-364-20-1
A4 CODE 46 LOW BATTERY VOLTAGE (CONT).
2.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
CEL comes on and stays on.
DDR test.
POSSIBLE PROBLEMS
REASON FOR QUESTION
Is 10 vdc or less measured at
Less than +10 volts on DDR
DDEC ECM power harness
DDEC ECM input?
indicates battery supplied +12
connector faulty.
volts are faulty.
DDEC ECM faulty.
CB22 and/or CB23 power input
wires 240/241 faulty.
Circuit breaker CB22 and/or
CB23 faulty.
CB22 and/or CB23 output wires
240/241 faulty.
Go to Step 4 of this
NO
Fault.
YES
3.
KNOWN INFO
TEST OPTIONS
CAUTION
Read CAUTION
CEL comes on and stays on.
Visual inspection.
REASON FOR QUESTION
POSSIBLE PROBLEMS
Are DDEC ECM terminals and
Damaged DDEC ECM or power
DDEC ECM power harness
connectors (DDEC ECM and
terminals or connectors can
connector faulty.
harness side) free from
affect signal or voltage to DDEC
DDEC ECM faulty.
ECM.
damage?
CB22 and/or CB23 power input
wires 240/241 faulty.
Circuit breaker CB22 and/or
CB23 faulty.
CB22 and/or CB23 output wires
240/241 faulty.
Repair power
harness connector
terminals (Para 7-101)
or replace DDEC
NO
ECM (Para 7-56).
Verify repair, go to
Step 7 of this Fault.
YES
Replace DDEC ECM
(Para 7-56).
Verify repair, go to
Step 7 of this Fault.
2-338

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