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Page Title:
CODE 42 SYNCHRONOUS REFERENCE SENSOR (SRS). |
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 TM 9-2320-364-20-1
2-13. DDEC II TROUBLESHOOTING (CONT).
A4 CODE 42 SYNCHRONOUS REFERENCE SENSOR (SRS).
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Tool Kit, General Mechanic's: Automotive
Engine OFF, (TM 9-2320-364-10)
(Item 74, Appendix G)
Parking brake applied, (TM 9-2320-364-10)
STE/ICE-R (optional) (Item 3, Appendix G)
Wheels chocked, (TM 9-2320-364-10)
DDEC Repair Kit (Item 15, Appendix G)
Top engine access cover opened,
Multimeter (Item 44, Appendix G)
(TM 9-2320-364-10)
Reader, Diagnostic (Item 53, Appendix G)
Jumperwire
References
TM 9-2320-364-10
TM 9-4910-571-12&P
START
1.
KNOWN INFO
TEST OPTIONS
CHECK ENGINE light (CEL)
DDR test.
Is Code 42 the only code
comes ON and stays ON.
displayed on DDR?
REASON FOR QUESTION
POSSIBLE PROBLEMS
Isolate Fault.
DDEC ECM and/or engine
harness connector faulty.
DDEC ECM faulty.
Wires 112 and/or 111 are
shorted.
Wires 112 and/or 111 are open.
SRS and/or engine harness
connector faulty.
For both Codes 42
SRS faulty.
and 41, go to Step 3
of this Fault.
NO
Other codes, go to
Fault Index
YES
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