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Page Title:
CODE 21 THROTTLE POSITION SENSOR (TPS) SIGNAL VOLTAGE HIGH (CONT). |
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 TM 9-2320-364-20-1
A4 CODE 21 THROTTLE POSITION SENSOR (TPS) SIGNAL VOLTAGE HIGH (CONT).
2.
KNOWN INFO
TEST OPTIONS
WARNING
READ WARNING
CHECK ENGINE light (CEL)
DDR test.
on Page 2-221
comes ON and stays ON.
REASON FOR QUESTION
POSSIBLE PROBLEMS
Are any codes (except 21)
Isolate Fault.
displayed on DDR with
Wires 952 and/or 419 are open.
TPS is faulty.
TPS MC6 disconnected?
TPS terminals and/or connector
are faulty.
Wires 417 and/or 916 shorted.
Vehicle harness connector
and/or power harness
connector shorted.
DDEC ECM terminals faulty.
DDEC ECM faulty.
For Code 21, go to
NO
Step 6 of this Fault.
YES
3.
KNOWN INFO
TEST OPTIONS
WARNING
READ WARNING
Resistance test.
CHECK ENGINE light (CEL)
on Page 2-221
STE/ICE-R #91.
comes ON and stays ON.
REASON FOR QUESTION
POSSIBLE PROBLEMS
Are there 5 ohms or less
measured between wires 952
Resistance greater than 5 ohms
Wires 952 and/or 419 are open.
and 417 at vehicle harness
at vehicle harness connector
TPS is faulty.
indicates open in return line wire
connector MC18, terminals D2
TPS terminals and/or connector
952 and/or signal line
and C3?
are faulty.
wire 417.
Wires 417 and/or 916 shorted.
Vehicle harness connector
and/or power harness
Repair wires 952
connector shorted.
and/or 417 (see
DDEC ECM terminals faulty.
schematic Fig 2-1)
DDEC ECM faulty.
NO
or notify
DS Maintenance.
Verify repair, go to
Step 9 of this Fault.
YES
2-220
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