1283 / 1575
STORME 400NM
SR
NO
DTC
FTB
DESCRIPTION
CAUSES
EFFECT ON VEHICLE
CHECK
POINTS
CORRECTIVE ACTION
MIL
STATUS
CEL
107
P0480
13
Circuit Open
This fault gets logged if the Fan 1 relay
drive pin of EMS ECU is open circuited
EMS ECU doesn't activate AC
compressor relay even though AC
request is activated by customer and
applies default ac torque
1.
Check 30A fuse connected to power supply and EMS power
relay is not blown off. Replace the fuse if found faulty.
2.
Check the fan 1 control relay connection; Perform necessary
repairs if connection is faulty.
3.
Check whether supply is available to relay contact 1 at ignition
on condition.
4.
Check electrical continuity between ECU to Fan 1 Relay
connector as per circuit schematic; Replace relay if problem
persists. And perform actuator test. Check ECU pins and
connector pins for damage/rust. In case of rust then clean
them and refit the connector.
5.
Replace main relay if its contacts are stuck open.
6.
Check ECU, Replace ECU; if problem persists.
7.
Confirmatory check after rectification~ Perform Actuator test for
fan and visually check that fan is operating also ensure fan 1
in rotating in right direction.
OFF
ON
108
P0481
00
No Subtype information
This fault is a grouping fault for all Fan 1
related faults: P0481-13, P0481-12,
P0481-11.
1.
As this fault is a grouping fault for the following faults: P0481-
13, P0481-12,P0481-11.
2.
Follow the rectification procedure of any of the above
mentioned faults with which this fault code is appearing for
resolving this fault.
OFF
OFF
109
P0481
11
Circuit Short To Ground
This fault gets logged if the Fan 2 relay
drive pin in EMS ECU is Short circuited
to Ground.~2. This fault will be logged
only if Ignition is ON at the instant of
fault detection by EMS ECU.
EMS ECU doesn't activate AC
compressor relay even though AC
request is activated by customer and
applies default ac torque~
1
Check 30A fuse connected to power supply and EMS power
relay is not blown off. Replace the fuse if found faulty.
2
Check the fan 2 control relay connection; Perform necessary
repairs if connection is faulty.
3
Check whether supply is available to relay contact 1 at ignition
on condition.
4
Check electrical continuity between ECU pin to Fan 2 Relay
connector as per circuit schematic; Replace relay if problem
persists. And perform actuator test. Check ECU pins and
connector pins for damage/rust. In case of rust then clean
them and refit the connector.
5
Check whether the EMS ECU fan 2 relay drive pin is short
circuited to ground, if so then rectify the wiring harness
connections according to circuit schematics.
6
Check ECU, Replace ECU; if problem persists.
7
Confirmatory check after rectification~ Perform Actuator test
for fan and visually check that fan is operating. also ensure
fan 2 is rotating in right direction.
OFF
ON