1998 JAGUAR X308 Workshop Manual

Page 1177 of 2490

JAGUAR X308 1998 2.G Workshop Manual Th
e engine management system provides optimum control of
 the engine under all operating conditions using several 
strategically placed sensors and any necessary actuators. Electronic engine control

Page 1178 of 2490

JAGUAR X308 1998 2.G Workshop Manual Throttle Position (TP) Sensor 
Location 
 
P
 arts List 
sen
d
 s the ECM a signal indica
ting throttle plate angle  
is
  the main input to the ECM from the driver  
i
s
  a dual Hall effect

Page 1179 of 2490

JAGUAR X308 1998 2.G Workshop Manual generates a signal when th
e dr
ive plate passes the sensor  
sen
 ds the ECM signals indicating crankshaft position and engine speed  
is e

ssential for calculating spark timing  
En

gine

Page 1180 of 2490

JAGUAR X308 1998 2.G Workshop Manual  
is
  of the hot-wire type (the resistan
ce of the wire varies as incoming air  passing over it has a cooling effect)  
provides f
 eedback to the ECM to perm
it monitoring of mass air flow

Page 1181 of 2490

JAGUAR X308 1998 2.G Workshop Manual  
P
 arts List 
It

em
Par
 t Number
De
 scription
1—PI032

 VVT solenoid 2 
2—PI027

 KS 2 
3—PI004

 ECT sensor 
4—PI026

 KS 1 
5—PI031

 VVT solenoid 1 
6—PI035

 MAFS (on vehicle) 
7

Page 1182 of 2490

JAGUAR X308 1998 2.G Workshop Manual  
Ite
 m
Par
t
  Number
De
scr
 iption
1—Engine
 
 management fuse box 
2—Engine 
control module (E
 CM) 
Circuit Diagrams (extracts only) 
ECM Su
pply Voltage

Page 1183 of 2490

JAGUAR X308 1998 2.G Workshop Manual  
It
em
De
 scription
1Mechanica

l guard 
position sensor (potentiometer)
2Pedal demand sensors (pot
 entiometers)
3Thro

ttle position sensor
4Engine

 control 
module (ECM)
5Throttl
 e motor power

Page 1184 of 2490

JAGUAR X308 1998 2.G Workshop Manual  
Ite
m
Part
  Number
Descr
 iption
1—Knock
 sensors, banks 1 and 2
  
2—Engine 
control module (E
 CM) 
Knock
 Sensor