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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.
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
CHECK ENGINE light (CEL)
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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