Range Rover P38
19
FUEL SYSTEM
NEW RANGE ROVER
24
DESCRIPTION AND OPERATION
Fuel injectors - (up to 99MY)
A multiport Sequential Fuel Injection (SFI) system is
used which utilises one injector per cylinder. Each
injector comprises a small solenoid which is activated
by the ECM to allow a metered quantity of fuel to pass
into the combustion chamber. Due to the pressure in
the fuel rail and the shape of the injector orifice, the
fuel is injected into the cylinder in a fine spray which
aids combustion. In the unlikely event of total injector
failure or leakage which will cause a rich mixture, a
misfire will occur in the affected cylinder. The fault is
indicated by illumination of the malfunction indicator
light (MIL) on North American specification vehicles.
Fault codes:
•
P0201 - Injector circuit fault, cylinder 1
•
P0202 - Injector circuit fault, cylinder 2
•
P0203 - Injector circuit fault, cylinder 3
•
P0204 - Injector circuit fault, cylinder 4
•
P0205 - Injector circuit fault, cylinder 5
•
P0206 - Injector circuit fault, cylinder 6
•
P0207 - Injector circuit fault, cylinder 7
•
P0208 - Injector circuit fault, cylinder 8
•
P1201 - Injector circuit open or ground short,
cylinder 1
•
P1202 - Injector circuit open or ground short,
cylinder 2
•
P1203 - Injector circuit open or ground short,
cylinder 3
•
P1204 - Injector circuit open or ground short,
cylinder 4
•
P1205 - Injector circuit open or ground short,
cylinder 5
•
P1206 - Injector circuit open or ground short,
cylinder 6
•
P1207 - Injector circuit open or ground short,
cylinder 7
•
P1208 - Injector circuit open or ground short,
cylinder 8
CAUTION: The injectors are extremely
sensitive, they must not be dropped or
contaminated.
CAUTION: When assembling the injector
to the fuel rail, only use clean engine oil to
aid assembly. DO NOT use petroleum jelly
or other forms of grease, as this will contaminate
the injector.
The injectors can be checked using a multimeter to
test the resistance values:
•
Injector resistance at 20
°
C = 16.2 ohms
±
0.5
ohms