Section 08
ENGINE MANAGEMENT (4-TEC)
Subsection 03
(COMPONENT INSPECTION AND ADJUSTMENT)
SMR2003_027 _08_03A.FM
08-03-25
Voltage Test
Check the voltage output from EMS ECU to the man-
ifold air pressure sensor (MAPS).
Disconnect connector from MAPS and connect a
voltmeter to the terminals of the wiring harness
as per the following table.
Remove and reinstall the safety lanyard to activate
the EMS ECU.
If voltage test is good, replace the MAPS.
If voltage test is not good, check the continuity of
the MAPS circuit.
Resistance Test
Disconnect the EMS ECU connector A on the EMS
ECU.
Using a multimeter, check continuity of circuits 12,
28 and 40.
If wiring harness is good, try a new EMS ECU.
Refer to EMS ECU REPLACEMENT procedures
elsewhere in this section.
Otherwise, repair the connectors or replace the
wiring harness between EMS ECU connector and
the MAPS.
Replacement
Disconnect MAPS connector and remove the MAPS.
Install the new MAPS paying attention to index its
tab into the adaptor notch. Apply Loctite 243 (blue)
on screw then torque to 10 N•m (89 lbf•
in
).
EXHAUST GAS TEMPERATURE
SENSOR (EGT)
1. Muffler
2. Exhaust gas temperature sensor (EGT)
Resistance Test
Disconnect the connector from the EGT and check
the resistance of the sensor itself.
The resistance should be between 2280
Ω
and
2740
Ω
at 20°C (68°F).
Otherwise, replace the EGT.
If resistance tests good,
reconnect
the EGT and
disconnect the EMS ECU connector A on the EMS
ECU.
Using a multimeter, recheck resistance value be-
tween terminals 10 and 26.
If resistance value is correct, try a new EMS ECU.
Refer to EMS ECU REPLACEMENT procedures
elsewhere in this section.
If resistance value is incorrect, repair the connec-
tor or replace the wiring harness between EMS
ECU connector and the EGT.
Replacement
Disconnect EGT connector and remove EGT.
Apply Loctite 518 on threads of the EGT then in-
stall.
Replug connector.
CONNECTION
VOLTAGE
terminal
1 with engine ground
5 V
terminal
2 with engine ground
0 V
terminal
3 with engine ground
0 V
2
F18D2IA
1
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Summary of Contents for 2003 GTI LE RFI
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Page 767: ...NOTE www SeaDooManuals net ...
Page 768: ...NOTE www SeaDooManuals net ...
Page 769: ...F00Z0D 2003 GTI MODEL WARNING www SeaDooManuals net ...
Page 770: ...F00Z0C 2003 GTI LE MODEL WARNING www SeaDooManuals net ...
Page 771: ...F00Z0E 2003 GTI LE RFI MODEL WARNING www SeaDooManuals net ...
Page 772: ...F00Z0J 2003 RX DI MODEL WARNING www SeaDooManuals net ...
Page 773: ...F00Z0I 2003 GTX DI MODEL WARNING www SeaDooManuals net ...
Page 774: ...F00Z0K 2003 XP DI MODEL WARNING www SeaDooManuals net ...
Page 775: ...F00Z0F 2003 GTX 4 TEC MODEL WARNING www SeaDooManuals net ...
Page 776: ...F00Z0G 2003 GTX 4 TEC MODEL WITH AUXILIARY DESS MODULE WARNING www SeaDooManuals net ...
Page 777: ...F00Z0B 2003 GTX 4 TEC AND GTX 4 TEC SUPERCHARGED MODELS WARNING www SeaDooManuals net ...
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