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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).
8.
KNOWN INFO
TEST OPTIONS
WARNING
READ WARNING
CHECK ENGINE light (CEL)
Visual inspection.
on Page 2-229
comes ON and stays ON.
Wires 952 and 419 not open.
REASON FOR QUESTION
TPS OK.
TPS terminals and connector
Are DDEC ECM terminals and
OK.
Damage to terminals or
connectors (DDEC ECM and
Wires 417 and 916 not shorted.
connectors can affect signal to
harness side) free from
Vehicle harness connector
DDEC ECM.
damage?
and power harness
connector not shorted.
POSSIBLE PROBLEMS
Repair harness
DDEC ECM terminals faulty.
connector terminals
DDEC ECM faulty.
(Para 7-101) or
NO
replace DDEC ECM
(Para 7-56).
Verify repair, go to
Step 9 of this Fault.
YES
Replace DDEC ECM
(Para 7-56).
Verify repair, go to
Step 9 of this Fault.
9.
KNOWN INFO
TEST OPTIONS
CHECK ENGINE light (CEL)
Verify repair.
Does CEL stay ON longer
comes ON and stays ON.
than five seconds?
Wires 952 and 419 not open.
REASON FOR QUESTION
TPS OK.
TPS terminals and connector
OK.
If CEL lights for approximately
Wires 417 and 916 not shorted.
five seconds and then goes
Vehicle harness connector
OUT after ENGINE switch is
and power harness
turned to ON, Fault has been
connector not shorted.
corrected.
DDEC ECM terminals OK.
DDEC ECM OK.
POSSIBLE PROBLEMS
Fault corrected.
NO
YES
Go to Fault Index
2-228
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