Section 08 ENGINE MANAGEMENT (4-TEC)
Subsection 02 (COMPONENT INSPECTION AND ADJUSTMENT)
EXHAUST GAS TEMPERATURE
SENSOR (EGTS)
2
F18D2IA
1
TYPICAL
1. Muffler
2. Exhaust gas temperature sensor (EGTS)
Resistance Test
Disconnect the connector from the EGTS and
check the resistance of the sensor itself.
The resistance should be between 2280
and
2740
at 20°C (68°F).
Otherwise, replace the EGTS.
If resistance tests good, reconnect the EGTS and
disconnect the ECM connector A on the ECM.
Using a multimeter, recheck resistance value be-
tween terminals 10 and 26.
If resistance value is correct, try a new ECM. Refer
to ECM REPLACEMENT procedures elsewhere in
this section.
If resistance value is incorrect, repair the connec-
tor or replace the wiring harness between ECM
connector and the EGTS.
Replacement
Disconnect EGTS connector and remove EGTS.
Apply Loctite 518 on threads of the EGTS then
install.
Replug connector.
KNOCK SENSOR (KS)
1
R1503motr174A
1. Knock sensor (KS)
Dynamic Test
Using the vehicle communication kit (VCK) with
the B.U.D.S. software, monitor the knock sensor
using the FAULTS section.
Start the engine and bring engine RPM above
5000 RPM. If no fault code occurs, the knock
sensor is good.
Otherwise, do the following.
Ensure sensor and cylinder head contact surfaces
are clean and mounting bolt and washer are cor-
rect and properly torqued down.
NOTE:
It is necessary to remove intake manifold
to inspect contact surfaces. Refer to INTAKE SYS-
TEM section.
Check the knock sensor resistance.
Disconnect the connector from knock sensor har-
ness.
Ensure to unplug knock connector located at en-
gine bracket. The knock sensor adaptor contains
resistors and must be disconnected to correctly
measure knock sensor resistance.
smr2004-Complete Line Up
429
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Summary of Contents for 2006 GTI
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