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TM 9-2320-364-20-1
A5A VEHICLE HARNESS +5 VOLT SUPPLY (CONT).
4.
KNOWN INFO
WARNING
TEST OPTIONS
Read WARNING
CHECK ENGINE light (CEL)
Are there
comes ON and stays ON.
STE/ICE-R #92.
10,000 ohms
ECM supply voltage OK.
4.7 to 5.2 vdc present on
or less measured between
REASON FOR QUESTION
wire 916 at TPS connector,
wire 916 and 952 at TPS
terminal C.
Resistance less than or equal to
connector, terminals A to C
10,000 ohms at TPS harness
and wire 417 at TPS
connector indicates short.
connector, terminal B and a
POSSIBLE PROBLEMS
known good ground?
Wire 916 and/or 952 open.
Wire 916 shorted to 952 and/or
chassis ground.
Vernier control connector MC38
damaged.
If readings are more
TPS harness connector faulty.
than 10,000 ohms, go
NO
TPS faulty.
to Step 9 of this Fault.
DDEC ECM faulty.
Wire 240 and/or 241 shorted to
wire 439 and /or chassis
ground.
Wire 952 at vernier control
connector MC38 faulty.
YES
5.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
CHECK ENGINE light (CEL)
Voltage test.
comes ON and stays ON.
STE/ICE-R #89.
Are there
ECM supply voltage OK.
more than
4.7 to 5.2 vdc present on
REASON FOR QUESTION
or equal to 4.7 volts measured
wire 916 at TPS connector,
on wire 916 to wire 952 at
terminal C.
Reading less than 4.7 vdc at
vernier control harness
No open in wires 916 and 952.
vernier control harness
connector MC38, terminals
connector indicates wire 916
C to A?
(+5 volt line) is shorted to return
POSSIBLE PROBLEMS
line wire 952 or ground.
Wire 916 shorted to 952 and/or
chassis ground.
Repair wires 916
Vernier control connector MC38
and/or 952 (see
damaged.
schematic Fig 2-1) or
TPS harness connector faulty.
NO
notify DS
TPS faulty.
Maintenance.
DDEC ECM faulty.
Verify repair, go to
Wire 240 and/or 241 shorted to
Step 12 of this Fault.
wire 439 and /or chassis
ground.
Wire 952 at vernier control
connector MC38 faulty.
YES
2-388

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