1225 / 1575
STORME 400NM
SR
NO
DTC
FTB
DESCRIPTION
CAUSES
EFFECT ON VEHICLE
CHECK
POINTS
CORRECTIVE ACTION
MIL
STATUS
CEL
27
P0100
27
Signal rate of change
above threshold
1.
This DTC gets logged when the rate
of change of Air mass flow sensor input
signal is above a maximum calibrated
threshold.
1
. - EMS ECU Apply reduce torque 1
mode:(60% of torque)~
1.
Check 60A fuse connected to battery power supply is not blown
off and also check 10A fuse of ignittion power supply is not
blown off. Replace the fuse if found defective. Check the
sensor connector for proper fitment; damage etc., ensure
proper fitment of the connector with the sensor.
2.
Check sensor for oxidation rust, etc., if noticed clean the
deposits.
3.
Check for electrical continuity between ECU pins A58,A71 and
A04 to sensor connector pins 1,3 & 2. check continuity
between Ignition switch input to sensor connector pin 4 and
rectify electrical discontinuity if noticed.Check ECU pins and
connector pins for damage/rust. In case of rust then clean
them and refit the connector.
4.
Check whether the AMF sensor signal pin A58 is Short circuited
to Battery or ground. If so, then rectify the wiring harness
connections.
5.
Replace AMF sensor in case of any physical damage to sensor
or if the problem still persists.
6.
Replace the EMS ECU if the problem still perists.
7.
After rectification ensure the following before handing over to
customer.
a) Check the Air mass flow sensor reading at ignition key on
shows xx mg/st.
b) Air mass flow reads < xx mg/st when the engine is at idle.
c) Air mass flow reads > xx mg/st when the engine is at fly-up.
ON
OFF
28
P0101
56
Invalid / Incompatible
Configuration~
1. This DTC gets logged if the AMF
sensor is either not learned or wrongly
learnt.
1.
EMS ECU Apply reduce torque 1
mode:(60% of torque).
2.
MI lamp is OFF
1.
Check whether the AMF sensor is learnt according to
specifications.
2.
Relearn the AMF sensor.
3.
If the problem still persists then replace AMF sensor.
4.
If the problem still persists then replace the EMS ECU.
ON
OFF