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Page Title: CODE 33 TURBO BOOST SENSOR (TBS) SIGNAL VOLTAGE HIGH (CONT).
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TM 9-2320-364-20-1
A4 CODE 33 TURBO BOOST SENSOR (TBS) SIGNAL VOLTAGE HIGH (CONT).
4.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
CHECK ENGINE light (CEL)
Visual inspection.
comes ON and stays ON.
Wire 452 not open.
REASON FOR QUESTION
Are TBS terminals and
POSSIBLE PROBLEMS
Damage to TBS terminals can
connectors free from
affect signal to TBS.
TBS connector faulty.
damage?
TBS sensor faulty.
Wires 416 and/or 432 shorted.
Wires 439, 432, 241 and/or 240
shorted.
DDEC ECM connector faulty.
DDEC ECM faulty.
Repair TBS connector
(Para 7-101).
NO
Verify repair, go to
Step 8 of this Fault.
YES
Replace TBS sensor
(Para 7-63).
Verify repair, go to
Step 8 of this Fault.
5.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
CHECK ENGINE light (CEL)
comes ON and stays ON.
STE/ICE-R #92.
Are there
Wire 452 not open.
more than
TBS connector OK.
REASON FOR QUESTION
10,000 ohms or an open
TBS sensor OK.
circuit measured between
Resistance less than or equal to
wires 416 and 432 at engine
POSSIBLE PROBLEMS
10,000 ohms at engine harness
harness connector, terminals
connector indicates signal line
Wires 416 and/or 432 shorted.
W1 and P1?
wire 432 is shorted to engine
Wires 439, 432, 241 and/or 240
Wire 416 (+5 volt line).
shorted.
DDEC ECM connector faulty.
DDEC ECM faulty.
Repair wires 432
and/or 416 (see
schematic Fig 2-2) or
NO
notify DS
Maintenance.
Verify repair, go to
Step 8 of this Fault.
YES
2-268

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