1215 / 1575
STORME 400NM
SR
NO
DTC
FTB
DESCRIPTION
CAUSES
EFFECT ON VEHICLE
CHECK
POINTS
CORRECTIVE ACTION
MIL
STATUS
CEL
14
P0088
2A
Signal Stuck In Range
This fault gets logged if rail pressure is
too high in Undefined control state MI
Lamp is ON;
EMS ECU takes following recovery
actions:
1.
Disables cruise control
function.
2.
Activates delayed engine stop
request.
3.
Disables Pilot & Post injection.
4.
Disable RVD on injector cylinder 1
5.
Disable RVD on injector cylinder.2
6.
Disable RVD on injector cylinder 3
7.
Disable RVD on injector cylinder 4
8.
Increase idle target speed.
9.
Applies reduce torque 1
mode:(60% of torque).
1.
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 135 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.
2.
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. Rectify wiring harness connections in
case of any issue.
3.
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.
4.
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.
5.
Check whether adequate fuel level is available in the tank.
6.
Check high pressure fuel lines for leakage.
7.
Check fuel filter is not clogged.
8.
Check low pressure fuel lines for air entry.
9.
Check & ensure IMV and rail pressure sensor connectors for
proper fitment.
10.
Check rail pressure sensor for oxidation, rust etc, if observed
clean deposit.
11.
Check harness for damages; Replace / Repair if harness is
damaged.
12.
Check ECU pins and connector, Replace if found defective.
13.
If vehicle is unable to start the perform 'Static injector back leak
test', Please check if any injector back leak is abnormally high
compared to other injectors, then replace corresponding
injectors.
14.
If vehicle is able to start then start the vehicle and perform
'Dynamic IMV test' - If test result shows IMV is faulty then
replace IMV.
15.
If vehicle is able to start then start the vehicle and perform
'Dynamic injector back leak test', Please check if any injector
back leak is abnormally high compared to other injectors, then
replace corresponding injectors.
16.
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.
17.
Check whether High pressure pump is functioning properly/able
to build pressure else replace high pressure pump.
18.
Check whether IMV is stuck closed, if so replace the IMV.
19.
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).
ON
OFF