1204 / 1575
SAFARI 400NM
SR
NO
DTC
FTB
DESCRIPTION
CAUSES
EFFECT ON VEHICLE
CHECK
POINTS
CORRECTIVE ACTION
MIL
STATUS
CEL
1
P0001
18
Circuit current below
threshold.
This fault gets logged if the IMV current
feedback received by EMS ECU is less
than a Minimum current threshold
calibrated for IMV.
EMS ECU takes following recovery
actions:
1.
Disables
IMV
resistance
estimation.
2.
Freezes (will not activate) IMV
current trim fault.
3.
Disables DTI iso leak test, DTI iso
IMV test & DTI HPV iso test.
4.
IMV gets fully open.
5.
Disables diagnostic of F M RPC
build fault.
6.
Disables the rail pressure control
fault detection.
1.
Check 30A fuse connected to EMS power relay and battery
(+ve)
power supply is not blown off. Replace if required.
2
. Ensure IMV connector is properly connected to the IMV.
3
. There is no mud, dirt, foreign particle accumulation on the
connector.
4
. Check electrical continuity of wiring harness between ECU pin
A77
and IMV connector pin 2, EMS ECU main relay supply and
IMV
connector pin 1 as per circuit schematics. Correct if necessary.
5
. Check whether the IMV control pin of EMS A77 is short
circuited to
Ground because of wrong wiring harness connections. If so
rectify the
wrong connections to make the connections inline with circuit
schematics.
6
. Check wiring harness resistance between IMV and ECU and
check
whether it is according to the design specifications (xx to xx
ohms).
7
. Check IMV internal resistance whether it is according to the
design
specifications (5.3 ohms at 20 degrees C). Replace IMV if the
resistance is not according to specifications.
8
. Perform IMV buzzing test using I/O Control Command, if IMV is
not
buzzing then replace IMV.
9
. Replace ECU if problem persists.
10
. After rectification perform actuator test for IMV and ensure the
result is positive.
OFF
ON