1327 / 1575
STORME 400NM
SR
NO
DTC
FTB
DESCRIPTION
CAUSES
EFFECT ON VEHICLE
CHECK
POINTS
CORRECTIVE ACTION
MIL
STATUS
CEL
221
P020A
92
Cylinder 1 Injection Timing
This DTC gets logged due to the
mechanical failure of the injector of
cylinder 1 or MDP (minimum drive
pulse) related issue of Injector of
cylinder 1.
1.
EMS ecu doesn't activate AC
compressor relay even though AC
request is activated by customer
and applies default ac torque.
2.
EMS ecu Freeze (Do not activate)
IMV current trim fault.
3.
EMS ecu Increases idle target
speed.
4.
Apply reduce torque 1 mode:(60%
of torque) or reduce torque
mode:(80% of torque).
5.
EMS ecu disable's SPC (Speed
Pilot Control) strategy, no more
SPC trim update.
6.
EMS ecu disables the AFR
controller.
7.
MI Lamp light on & Display
message on IC shows: Engine
system fault.
8.
EMS ecu disables cruise control
function.
9.
EMS ecu disables RVD on injector
Cylinder 1.
10.
EMS ecu Enters into SPC (Speed
Pilot Control) extended mode
(wider area…)
11.
EMS ecu disables IMV resistance
estimation.
1.
Check Injector Connection; Switch ignition off and wait for ten
seconds. Remove injector connector; clean and reconnect
properly.
2.
Perform Injector cylinder 1 buzzing test using I/O Control
command. IF buzzing test fails then check step 3 thoroughly.
3.
Check Injector electrical continuity between EMS ECU pins
A26, A27 and Injector cylinder 1 connector pins 2, 1
respectively as per circuit schematic; if any issue is found then
correct the wiring harness connections.
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 specified range then replace
injector.
5.
Swap the Injectors of cylinders 1 and 2, if problem P0201
disappears then it is confirmed that Injector of Cylinder 1 is
faulty and replace the injector of cylinder 1.
6.
Replace injector if problem still persists.
7.
Check ECU pins for physical damage; replace ECU, if problem
still persists.
8.
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 continuity between
injector and the ECU connector.
b) Perform actuator test for the injectors.
OFF
ON