Freelander System Description and Operation
ENGINE MANAGEMENT SYSTEM - SIEMENS
18-4-38 DESCRIPTION AND OPERATION
1671
ECM cooling fan signal
Short to battery
No
No
A
1672
Serial link with
immobilisation ECU
Code implausible
No
No
A
1676
ECM, throttle monitoring/ self
test
Engine torque versus driver
demand implausible
No
Yes
B
1677
ECM, throttle monitoring/ self
test
Engine speed versus driver
demand implausible
No
No
B
1678
Throttle
Potentiometer 1 defective
Yes
Yes
B
1679
Throttle
Potentiometer 2 defective
Yes
Yes
B
1689
Brake vacuum enhancer
solenoid valve – Up to 2003
model year
Short circuit to battery
No
No
A
1690
Brake vacuum enhancer
solenoid valve – Up to 2003
model year
Short circuit to earth
No
No
A
1691
Brake vacuum enhancer
solenoid valve – Up to 2003
model year
Open circuit
No
No
A
1692
Main relay
Main relay fault
No
No
A
1697
Ambient pressure
Value not plausible
No
No
A
1698
Ambient pressure
Failure value stored
No
No
A
1699
Ambient pressure
Learning not successful
No
No
A
2122
APP sensor - Potentiometer
1
Short circuit to earth or open
circuit
Yes
Yes
A
2123
APP sensor - Potentiometer
1
Short circuit to battery
Yes
Yes
A
2127
APP sensor - Potentiometer
2
Short circuit to earth or open
circuit
Yes
Yes
A
2128
APP sensor - Potentiometer
2
Short circuit to battery
Yes
Yes
A
2138
APP sensor - Potentiometer
comparison
Switch D/E voltage correlation
No
Yes
B
P Code No.
Component/Signal
Fault Description
Warning Lamp
Drive Cycle
SERVICE
ENGINE
(MIL)
SERVICE
ENGINE
SOON
