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Page Title:
VEHICLE HARNESS +5 VOLT SUPPLY (CONT). |
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 TM 9-2320-364-20-1
A5A VEHICLE HARNESS +5 VOLT SUPPLY (CONT).
11.
KNOWN INFO
WARNING
TEST OPTIONS
Read WARNING
Is 4.7
CHECK ENGINE light (CEL)
Voltage test.
on Page 2-397
to 5.2 vdc
comes ON and stays ON.
STE/ICE-R #89.
ECM supply voltage OK.
measured at
4.7 to 5.2 vdc present on
REASON FOR QUESTION
wire 916 at vernier control
wire 916 at TPS connector,
connector MC38, terminal C
terminal C.
Both readings of 4.7 to 5.2 vdc
and a known good ground
No open in wires 916 and 952.
at vernier control harness
No short in wires 916 and 952.
and wire 952 at vernier
connector indicates wire 952
Vernier control connector
control connector MC38,
open from connector to DDEC
MC38 OK.
ECM.
terminal A and a known good
TPS harness connector OK.
ground?
TPS OK.
DDEC ECM OK.
No short in wires 240 and 241.
Repair wires 916
and/or 952 (see
POSSIBLE PROBLEMS
schematic 2-1) or
NO
notify DS
Wire 952 at vernier control
Maintenance.
connector MC38 faulty.
Verify repair, go to
Step 12 of this Fault.
YES
Go to Step 6 of this
Fault.
2-396
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