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TM 9-2320-364-20-2
2-860
5. CODE 21: THROTTLE SENSOR INOPERATIVE (CONT).
“CHECK TRANS” light ON.
“DO NOT SHIFT” light OFF.
“DO NOT SHIFT” light will not
go out at start up.
Transmission shifts delayed or
hard.
Throttle position sensor OK.
Wire 908 OK.
Wire(s) 104, 106A, 124 OK.
DDEC ECM OK.
Throttle position control OK.
Transmission ECU OK.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Verify repair.
YES
NO
Fault corrected.
6.
Does TCL stay ON longer
than five seconds?
Go to Fault Index
(Table 2-26).
If TCL lights for approximately
five seconds and then goes
OUT after engine is started and
running, fault has been
corrected.
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