1237 / 1575
STORME 400NM
SR
NO
DTC
FTB
DESCRIPTION
CAUSES
EFFECT ON VEHICLE
CHECK
POINTS
CORRECTIVE ACTION
MIL
STATUS
CEL
replace corresponding injectors.
17.
If vehicle is able to start then start the vehicle and perform
"Pump pressure build capacity test' - If test result shows not
ok then replace HP pump.
18.
Check whether High pressure pump is functioning
properly/able to build pressure else replace high pressure
pump.
19.
Check whether IMV is Stuck closed, if so replace the IMV.
20.
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 a
very rail pressure value in 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.
(feedback and demand parameters can be monitored by using
diagnostic tool)
46
P0191
85
Signal Above Allowable
Range
This fault gets logged If the difference
between the rail pressure demand and
the rail pressure feedback is greater
than a calibrated maximum threshold for
rail pressure.
EMS ECU takes following
recovery actions:
1.
Disables cruise control function.
2.
Activates delayed engine stop
request.
3.
Disables cylinder balance
correction, diag and tooth learning
strategy.
4.
Applies reduce torque 1
mode:(60% of torque).
5.
Disables SPC strategy, no more
sPC trim update.
1.
Check 30A fuse connected to EMS power relay and battery
(+ve) power supply is not blown off . Replace if required.
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.
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.Check 30A fuse connected to EMS power
relay is functioning properly. Replace if found faulty.
4.
check whether the IMV control pin of EMS A77 is short circuited
to ground/battery because of wrong wiring harness
connections. If so rectify the wrong connections to make the
connections inline with circuit schematics.
5.
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.
6.
Check whether adequate fuel level is available in the tank.
7.
Check high pressure fuel lines for leakage.
8.
Check fuel filter is not clogged.
ON
OFF