Mazda CX-5 Service & Repair Manual: Low Fuel Warning Light
Purpose
-
The low fuel warning light warns the driver that the remaining fuel level is low.
Function
-
The instrument cluster calculates the fuel quantity based on the following CAN signals, and if a remaining fuel amount of approx. 10 L {2.6 US gal, 2.2 Imp gal} (fuel gauge displays remaining two segments) is detected, the low fuel warning light illuminates.
-
Fuel gauge sender unit voltage signal sent from rear body control module (RBCM)
-
Fuel injection amount signal, vehicle speed signal sent from PCM
Construction
-
The instrument cluster microcomputer controls the low fuel warning light illumination on/off based on the remaining fuel amount calculation that is calculated by the instrument cluster.
-
The low fuel warning light is set in the instrument cluster.
Operation
-
When the ignition is switched ON (engine off or on) the instrument cluster receives (1) the fuel gauge sender unit voltage signal from the rear body control module (RBCM), and the fuel injection amount signal from the PCM.
-
The instrument cluster turns the transistor on (2) if the calculated remaining fuel amount based on each signal is approx. 10 L {2.6 US gal, 2.2 Imp gal}.
-
When the transistor turns on, a ground circuit with the low fuel warning light is established and the low fuel warning light illuminates (3).
Fail-safe
-
Function not equipped.
High Pressure Fuel Pump
Purpose, Function
Applies pressure to fuel sent from the fuel pump equipped on the fuel tank,
and then pumps it to the fuel delivery pipe.
Fuel is sectioned and pumped by the up and ...
No.27 Fuel Refill Concerns
27
FUEL REFILL CONCERNS
DESCRIPTION
Fuel tank does not fill smoothly.
POSSIBLE CAUSE
...
Other materials:
Timing Chain, Chain Tensioner
Purpose, Function
Timing chain
The timing chain transmits the rotation force of the crankshaft to the camshaft
to perform the rotation timing of the crankshaft and camshaft.
Chain tensioner
The chain tensioner constantly maintains the timing chain tension and the
timing ch ...
Heated Oxygen Sensor (HO2 S)
Purpose/Function
Detects the oxygen concentration (theoretical air/fuel ratio) in the exhaust
gas as basic information for mainly determining the fuel injection amount and
as information for determining the deterioration of catalytic converter.
Detects the oxygen concentration ( ...
Keyless Entry System
This system uses the key buttons to remotely lock and unlock the doors and the
liftgate.
The system can start the engine without having to take the key out of your purse
or pocket.
It can also help you signal for attention.
Operating the theft-deterrent system is also possible on theft-deterr ...
