Freelander System Description and Operation
ENGINE MANAGEMENT SYSTEM - SIEMENS
18-4-36 DESCRIPTION AND OPERATION
1227
APP sensor potentiometer 2
Open circuit or short circuit to
earth
No
Yes
—
1228
APP sensor potentiometer 2
Short circuit to battery
No
Yes
—
1231
Fuel pump relay
Short circuit to earth
No
No
A
1232
Fuel pump relay
Short circuit to battery
No
No
A
1320
Misfire detection
Reluctor adaption fault
No
No
B
1321
Misfire detection
Reluctor tooth pattern fault
No
No
B
1322
Ignition system
Ignition fault on more than two
cylinders
No
No
A
1351
Ignition coil 1
Short circuit to battery
No
No
A
1352
Ignition coil 2
Short circuit to battery
No
No
A
1353
Ignition coil 3
Short circuit to battery
No
No
A
1354
Ignition coil 4
Short circuit to battery
No
No
A
1355
Ignition coil 5
Short circuit to battery
No
No
A
1356
Ignition coil 6
Short circuit to battery
No
No
A
1383
Ignition feedback resistor
Open circuit
No
No
A
1391
Ignition coil 1
Spark duration too short
No
No
A
1392
Ignition coil 2
Spark duration too short
No
No
A
1393
Ignition coil 3
Spark duration too short
No
No
A
1394
Ignition coil 4
Spark duration too short
No
No
A
1395
Ignition coil 5
Spark duration too short
No
No
A
1396
Ignition coil 6
Spark duration too short
No
No
A
1450
DMTL pump motor
Change-over valve stuck
Yes
No
A
1451
DMTL pump motor
Reference current unstable
Yes
No
A
1452
DMTL pump motor
Reference current below limit
Yes
No
A
1453
DMTL pump motor
Reference current above limit
Yes
No
A
1454
DMTL change-over valve
Short circuit to battery
Yes
No
A
1455
DMTL change-over valve
Short to earth
Yes
No
A
1456
DMTL change-over valve
Open circuit
No
No
—
1470
VIS balance valve motor
Valve always open
No
No
B
1471
VIS balance valve motor
Valve always closed
No
No
B
1472
VIS power/ butterfly valves
motor
Valves always open
No
No
B
1473
VIS power/ butterfly valves
motor
Valves always closed
No
No
B
1474
VIS balance valve motor
Short circuit to battery
No
No
B
1475
VIS balance valve motor
Open circuit or short circuit to
earth
No
No
B
1476
VIS power/ butterfly valves
motor
Short circuit to battery
No
No
B
1477
VIS power/ butterfly valves
motor
Open circuit or short circuit to
earth
No
No
B
1488
DMTL pump motor
Open circuit or short circuit to
earth
Yes
No
—
1489
DMTL pump motor
Short circuit to earth
Yes
No
A
1490
DMTL pump motor
Short circuit to battery
Yes
No
A
1537
A/C compressor clutch relay
Short circuit to earth
No
No
A
1538
A/C compressor clutch relay
Short circuit to battery
No
No
A
1540
APP sensor
Both signals implausible
Yes
Yes
B
1541
APP sensor
Signal implausible
No
Yes
—
1564
Cruise control interface ECU
MFL signal bit pattern implausible
No
No
A
P Code No.
Component/Signal
Fault Description
Warning Lamp
Drive Cycle
SERVICE
ENGINE
(MIL)
SERVICE
ENGINE
SOON