Page 319 of 1007

ENGINE MANAGEMENT SYSTEM - SIEMENS
18-3-14 REPAIRS
5.Release throttle pedal switch from bracket on
throttle pedal assembly.
6.Release clips securing switch bracket to pedal
assembly and remove bracket.
Refit
1.Fit switch bracket to throttle pedal assembly
and secure with clips
2.Position switch and push fully into bracket on
pedal assembly.
3.To correctly position throttle pedal switch, move
throttle pedal to the closed position and ensure
that switch is in contact with tang on throttle
pedal.
4.Connect multiplug to throttle pedal switch.
5.Connect throttle inner cable to throttle pedal
and secure with clip.
6.Position throttle pedal assembly to bulkhead, fit
and tighten nuts to 25 Nm (18 lbf.ft).
Sensor - combined - manifold absolute
pressure/Intake air temperature (MAP/
IAT)
$% 19.22.26
Remove
1.Disconnect battery earth lead.
2.Remove engine acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
3.Disconnect multiplug from MAP/IAT sensor.
4.Remove 2 screws securing MAP/IAT sensor to
inlet manifold chamber, remove sensor.
Refit
1.Clean MAP/IAT sensor and mating face on inlet
manifold chamber.
2.Position MAP/IAT sensor, fit and tighten
screws.
3.Connect multiplug to MAP/IAT sensor.
4.Fit engine acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
5.Connect battery earth lead.
M19 3182
M19 3197
Page 320 of 1007
ENGINE MANAGEMENT SYSTEM - SIEMENS
REPAIRS 18-3-15
Sensor - throttle position (TP) - NAS - up
to 03MY
$% 19.22.49
Remove
1.Disconnect battery earth lead.
2.Remove 2 nuts and release throttle pedal from
studs.
3.Release TP sensor multiplug from bracket and
disconnect from main harness.
4.Remove nut and release lever from sensor.
5.Remove 2 nuts and bolts and remove sensor.Refit
1.Fit TP sensor and tighten nuts and bolts to 10
Nm (7 lbf.ft).
2.With throttle pedal held closed, fit lever to
sensor and tighten nut to 10 Nm (7 lbf.ft).
3.Position throttle pedal, connect multiplug and
secure to pedal bracket.
4.Fit pedal to studs and tighten nuts to 25 Nm (18
lbf.ft).
5.Connect battery earth lead.
6.Use TestBook/T4 to confirm correct operation.
Page 321 of 1007
ENGINE MANAGEMENT SYSTEM - SIEMENS
18-3-16 REPAIRS
Sensor - throttle position (TP) - NAS -
from 03MY
$% 19.22.49
Remove
1.Ensure ignition is switched off.
2.Remove 2 nuts and release throttle pedal and
TP sensor assembly from studs.
3.Disconnect multiplug from TP sensor.
4.Remove throttle pedal and TP sensor
assembly.
Refit
1.Position throttle pedal and TP sensor assembly
and connect multiplug.
2.Fit throttle pedal and TP sensor assembly to
studs and tighten nuts to 25 Nm (18 lbf.ft).
Page 333 of 1007
FUEL DELIVERY SYSTEM - PETROL
19-2-12 REPAIRS
Sensor - heated oxygen (H02S) - pre-
catalyst - LH - KV6 - Non NAS
$% 19.22.16
Remove
1.Raise front of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
2.Remove underbelly panel.
+ EXTERIOR FITTINGS, REPAIRS,
Panel - underbelly.
3.Release and disconnect HO2S multiplug.
4.Release HO2S harness from clip.
5.Remove HO2S from LH exhaust manifold.Refit
1.Clean HO2S and exhaust manifold mating
face.
2.Fit HO2S and tighten to 55 Nm (41 lbf.ft).
3.Connect multiplug to HO2S, and secure to
support bracket and harness clip.
4.Fit underbelly panel.
+ EXTERIOR FITTINGS, REPAIRS,
Panel - underbelly.
5.Remove stand(s) and lower vehicle.
Page 334 of 1007
FUEL DELIVERY SYSTEM - PETROL
REPAIRS 19-2-13
Sensor - heated oxygen (H02S) - pre-
catalyst - LH - KV6 - NAS
$% 19.22.16
Remove
1.Disconnect battery earth lead.
2.Remove engine acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
3.Remove underbelly panel.
+ EXTERIOR FITTINGS, REPAIRS,
Panel - underbelly.
4.Release and disconnect HO2S multiplug.
5.Release HO2S harness from clip.
6.Remove HO2S.Refit
1.Clean HO2S and mating face.
2.Fit H02S and tighten to 55 Nm (40 lbf.ft).
3.Connect H02S multiplug and fit to bracket.
4.Fit H02S harness to clip.
5.Fit underbelly panel.
+ EXTERIOR FITTINGS, REPAIRS,
Panel - underbelly.
6.Fit engine acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
7.Connect battery earth lead.
M19 3505
M19 3483
Page 335 of 1007
FUEL DELIVERY SYSTEM - PETROL
19-2-14 REPAIRS
Sensor - heated oxygen (H02S) - front -
K1.8
$% 19.22.16
Remove
1.Release and disconnect HO2S multiplug.
2.Release HO2S harness from clip on cylinder
block.
3.Using a 22 mm crowsfoot spanner, remove
HO2S.Refit
1.Clean HO2S, sealing washer and mating faces.
2.Fit HO2S and tighten to 55 Nm (41 lbf.ft).
3.Connect HO2S multiplug and secure to support
bracket.
4.Secure HO2S harness to cylinder block clip.
Page 336 of 1007
FUEL DELIVERY SYSTEM - PETROL
REPAIRS 19-2-15
Sensor - heated oxygen (H02S) - pre-
catalyst - RH - KV6 - Non NAS
$% 19.22.17
Remove
1.Raise front of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
2.Remove LH front road wheel.
3.Release RH HO2S multiplug from coolant rail
bracket and disconnect multiplug.
4.Remove HO2S from RH exhaust manifold.Refit
1.Clean HO2S and exhaust manifold mating
face.
2.Fit HO2S and tighten to 55 Nm (41 lbf.ft).
3.Connect RH HO2S multiplug, secure multiplug
in coolant rail bracket.
4.Fit LH front road wheel and tighten nuts to 115
Nm (85 lbf.ft).
5.Remove stands and lower vehicle.
M30 0996
Page 337 of 1007

FUEL DELIVERY SYSTEM - PETROL
19-2-16 REPAIRS
Sensor - heated oxygen (H02S) pre-
catalyst - RH - KV6 - NAS
$% 19.22.17
Remove
1.Disconnect battery earth lead.
2.Remove engine acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
3.Release and disconnect HO2S multiplug.
4.Release HO2S harness from clips.
5.Remove HO2S.
Refit
1.Clean HO2S and mating face.
2.Fit H02S and tighten to 55 Nm (40 lbf.ft).
3.Connect H02S multiplug and fit to bracket.
4.Fit harness into clips.
5.Fit engine acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
6.Connect battery earth lead.
Sensor - mass air flow (MAF) - NAS
$% 19.22.25
Remove
1.Disconnect battery earth lead.
2.Remove engine acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
3.Disconnect multiplug from MAF sensor.
4.Release clip and remove MAF sensor.
Refit
1.Fit MAF sensor and secure with clip.
2.Connect multiplug to MAF sensor.
3.Fit engine acoustic cover.
+ ENGINE - K SERIES KV6, REPAIRS,
Cover - engine acoustic.
4.Connect battery earth lead.
M19 3483
M19 3482
M19 3480