1249 / 1575
STORME 400NM
SR
NO
DTC
FTB
DESCRIPTION
CAUSES
EFFECT ON VEHICLE
CHECK
POINTS
CORRECTIVE ACTION
MIL
STATUS
CEL
60
P0203
2B
Signal Cross Coupled
This fault gets logged if the Injector-
Cylinder 3 HSD and LSD pins of EMS
ECU are short circuited across
EMS ECU takes following
recovery actions:
1.
EMS ECU doesn't activate AC
compressor relay eventhough AC
request is activated by customer
and applies default ac torque.
2.
Disables the BRC reading and use
estimation for injector pulse
duration instead of reading for
injector cylinder3.
3.
Disables cruise control function.
4.
Disables RVD (Rail Valve
Discharge) on injector cylinder3.
5.
Disables all DTI iso diagnostics
test.
6.
Disables EGR control and close
EGR valve.
7.
Freezes (Do not activate) IMV
current trim fault.
8.
Increases idle target speed.
9.
Disables DTI iso leak test, DTI iso
IMV test & DTI HPV iso test.
10.
Applies reduce torque 1
mode:(60% of torque).
11.
Disables diagnostic of Rail
Pressure build fault.
12.
Disables SPC(Speed Pilot Control)
strategy, no more SPC trim
update.
13.
Disable Xs ramp torque function
(Torque increase during start up if
start fails).~
1.
Check Injector Connection; Switch ignition off and wait for ten
seconds. Remove injector connector; clean and reconnect
properly.
2.
Check Injector electrical continuity between ECU pins A75 &
A51 and Injector - Cylinder 3 connector pins 2 & 1 as per
circuit schematic; if required correct or replace the harness.
Check whether Cylinder 3 injector's HSD and LSD pins A75 &
A51 are short circuited due to wrong wiring harness
connections. If so then rectify the wiring harnes connections
according to circuit schematics.
3.
Disconnect injector & check if fault dissapear. If dissapear,
injector is faulty, replace injector.
4.
Remove injector, Check continuity and resistance using a multi
meter across injector pins. (Resistance shall be ~ 0.322
ohms).If resistance is not in specifed range then replace
injector.
5.
Check ECU pins for physical damage; replace ECU, if problem
still persists.
6.
After rectification ensure the following before handing over to
customer.
a) Please fit the injector with its connector on wiring harness
and remove ECU connector and check for continity between
injector and the ECU connector.
b) Perform actuator test for the injectors.
ON
OFF