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ELECTRICAL
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7. DIAGNOSTIC TROUBLESHOOTING TABLE FOR BOTH EMS AND ICU, WITH DTCS
Following chart has useful information, under different operating conditions, which may occur on vehicle.
This is valid for TATA SAFARI STORME EMS ECU
DTC CODES
STATUS LAMP
(“
LOCK” SYMBOL
)
SR.
NO
SCENARIO
(
BETWEEN IMMO
AND EMS
)
EMS
IMMO IGN OFF IGN ON
VEHICLE
STARTING
REMARKS
1.
CAN_H wire open
circuit
-
-
Blink
OFF
No
NO_RESPONSE
and CAN_MUTE
error
2.
CAN_L wire open
circuit
-
-
Blink
OFF
No
NO_RESPONSE
and CAN_MUTE
error
3.
CAN_H and
CAN_L wires
swapped
-
-
Blink
OFF
No
CAN_OFF and
CAN_MUTE error
4.
CAN_H and
CAN_L short
-
-
Blink
OFF
No
CAN_OFF and
CAN_MUTE error
5.
Both CAN_H and
CAN_L open
-
-
Blink
OFF
No
Service Lamp
come ON
6.
No battery supply
to ICU
-
P0560
P0562 OFF
OFF
Yes
No degradation in
Immo function
7.
No Ignition supply
to ICU
U0167
-
Blink
Blink
No
Service Lamp
come ON
8.
No Ground
connection to ICU
U0167
P560
P562
OFF
OFF
No
Service Lamp
come ON
9.
Different AES key
code in EMS and
ICU
U0426
U0401 Blink
ON
No
-
10. Battery supply <
8V
U0426
P0560
P0562 Blink
OFF
No
-
11. Battery supply >
16V
U0426
P0560
P0563 Blink
OFF
No
-
12.
Mechanical key
(
without
transponder
)
P0513
B1343 Blink
ON
No
-
13.
Wrong E-key
(
mismatch of
transponder and
code in ICU
)
P0513
B1342/
P0513 Blink
ON
No
-
14. Immobilizer unit
not connected
U0167
-
OFF
OFF
No
Service Lamp
come ON