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Page Title:
VEHICLE HARNESS +5 VOLT SUPPLY. |
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 TM 9-2320-364-20-1
2-13. DDEC II TROUBLESHOOTING (CONT).
A5A VEHICLE HARNESS +5 VOLT SUPPLY.
INITIAL SETUP
Tools and Special Tools
References
Tool Kit, General Mechanic's: Automotive
TM 9-2320-364-10
(Item 74, Appendix G)
TM 9-4910-571-12&P
STE/ICE-R (optional) (Item 3, Appendix G)
Equipment Condition
DDEC Repair Kit (Item 15, Appendix G)
Engine OFF, (TM 9-2320-364-10)
Multimeter (Item 44, Appendix G)
Parking brake applied, (TM 9-2320-364-10)
Reader, Diagnostic (Item 53, Appendix G)
Wheels chocked, (TM 9-2320-364-10)
Remover, Connector (Item 55, Appendix G)
Top engine access cover opened,
(TM 9-2320-364-10)
(Item 95, Appendix G)
Jumperwire
Materials/Parts
Compound, Corrosion Preventive
(Item 34, Appendix C)
Lockwasher (Item 168, Appendix F)
START
1.
KNOWN INFO
TEST OPTIONS
CHECK ENGINE light (CEL)
DDR test.
Is Code 46 (Low Battery
comes ON and stays ON.
Voltage) displayed on DDR?
REASON FOR QUESTION
POSSIBLE PROBLEMS
Low battery voltage is suspect.
4.7 to 5.2 vdc not present on
wire 916 at TPS connector,
terminal C.
Wire 916 and/or 952 open.
Wire 916 shorted to 952 and/or
chassis ground.
Vernier control connector MC38
damaged.
TPS harness connector faulty.
TPS faulty.
Go to Fault A4 Code
NO
DDEC ECM faulty.
46, (Table 2-16).
Wire 240 and/or 241 shorted to
wire 439 and /or chassis
ground.
Wire 952 at vernier control
connector MC38 faulty.
YES
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