1235 / 1575
STORME 400NM
SR
NO
DTC
FTB
DESCRIPTION
CAUSES
EFFECT ON VEHICLE
CHECK
POINTS
CORRECTIVE ACTION
MIL
STATUS
CEL
update.
16.
Disables rail pressure sensor
learning, uses rail pressure
feedback recovery value and
freezes over pressure fault..
17.
Apply reduce torque 2 mode:(70%
of torque cut off at 2700erpm).
18.
IMV gets fully open.
8.
Check ECU; if problem still persists replace the ECU.
9.
After rectification ensure the following before handing over to
customer.
a) Rail pressure at ignition key on is < 10 bar.
b) By removing the rail pressure sensor connector shows rail
pressure value of XX bar.
c) High pressure leak detection test can be carried out.
d) Please drive the vehicle on road,check and ensure rail
pressure feed-back follows the demand continuously.
44
P0191
67
Signal incorrect after event
This fault gets logged when the rail
pressure after Ignition on is much
greater than rail pressure memorized
when powering OFF the system and
engine stopped.(previous power off) or
when the rail pressure after Ignition on is
much less than rail pressure memorized
when powering OFF the system and
engine stopped.(previous power off) or if
EMS ECU finds the rail pressure after
Ignition on is much greater than rail
pressure memorized when powering
OFF the system and engine stopped
(previous power off) for some ingnition
On Off cycles.
EMS ECU takes following
recovery actions::~
1.
Disables cruise control function.
2.
Activates delayed engine stop
request.
3.
Disable RVD on injector cylinder 1
4.
Disable RVD on injector cylinder 2
5.
Disable RVD on injector cylinder 3
6.
Disable RVD on injector cylinder 4
7.
Disables all DTI iso diag test.
8.
Freezes(will not activates) IMV
current trim fault.
9.
Disables cylinder balance
correction, diagnostics and tooth
learning strategy.
10.
Disables dTI iso leak test, DTI iso
IMV test & DTI HPV iso test.
11.
IMV gets fully open.
12.
Disables PWC strategy (Pilot main
waves compensation).
13.
Disables pressure sensor learning,
uses recovery value for rail
pressure feedback and freezes
over pressure fault.
14.
Disable diagnostic of rail pressure
control build fault.
15.
Applies reduce torque 2
mode:(70% of torque cut off at
2700erpm).
16.
Disables the rail pressure control
fault detection.
17.
Disables SPC(Speed pilot control)
strategy, no more sPC trim
update.
1.
Check whether the vehicle has been pushed for some time, if
so then erase the DTC and hadover the vehicle back to the
customer.
2.
Check electrical continuity between ECU pin no A38, A35 A19
to Rail pressure sensor connector no 3 ,1, 2. Check whether
the Rail pressure sensor signal pin A35 is either shorted to
battery/Ground. If so then rectify the wiring harness
connections to make them inline with circuit
schematics.Check 30A fuse connected to EMS power relay is
functioning properly. Replace if found faulty.
3.
Check electrical continuity of wiring harness between ECU pin
A77 and IMV connector pin 2 & EMS main relay supply and
IMV connector pin 1. rectify wiring harness connections in
case of any issue.
4.
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.
5.
Check for P0641 fault, if found then rectify the fault by following
its rectification procedure.
6.
If the problem still persists then replace Rail + Rail pressure
sensor.
7.
Check EMS ECU pins for physical damage, if so replace EMS
ECU~8. If problem still persists then replace EMS ECU.
OFF
ON