TATA Motors Sumo Gold CR-4 Owner's Manual & Service Book page 33

INDICATORS
Glow plug Indicator
(if fitted) :
This indicator lights up when the 'IGN' is switched 'ON'
and goes 'OFF' after a few moments automatically
depending on the engine temperature, indicating readiness
to crank the engine.
NOTICE
Do not crank the engine until this light goes 'OFF'. The
duration of 'ON' time varies with engine block
temperature and it glows for longer duration with a cold
engine.
Service Indicator Lamp:
This symbol indicates the car's engine condition.
1. It comes "ON" when ignition is switched "ON" and once
engine is cranked, it goes "OFF".
2. It remains "ON" if there is a problem in any of the EMS
related / engine components.
NOTICE
If the Service indicator lamp remains "ON" when the
engine is running, the engine's performance deteriorates
marginally & sometimes significantly. Take your car to a
TATA Authorized service centre.
Malfunction Indication Lamp (MIL):
This symbol comes ON when the ignition is turned
"ON" and goes "OFF" once the engine is cranked.
NOTICE
This symbol will remain "ON" for any engine related fault,
which may cause increase in emission levels of the car
beyond the regulatory limit. Take your car to a TATA
Authorized service centre.
On Board Diagnostic (OBD) System:
On board Diagnostics or OBD is an automotive term referring
to a vehicle's self Diagnostic and reporting capability. The
OBD system allows continuous diagnosis of the
components of the vehicle correlated with emissions. This
system warns the driver, by turning "ON" the Malfunction
Indication lamp (MIL) on the instrument cluster, when a
fault causes emission levels to increase.
The OBD system also has a diagnostic connector that can
be interfaced with appropriate diagnostic tools, which makes
it possible to read the fault codes stored in the Electronic
Control Unit, together with a series of specific parameters
for Engine operation and Diagnosis. This check can also
be carried out by the traffic police.
HANDLING
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