Revotron 1.2T
138
ECU Dimensions :
ECU Handling and Care :
Earth (Ground) Connection:
•
Ensure all the ground connections are
fixed correctly.
•
DO NOT leave any grounded wire loose
or open.
•
ECU ground pins should be grounded
within 300mm from the ECU.
Power Supply :
At IGNITION ON, ECU starts functioning
and initializes, the power for the main drivers
for the ECU are taken from the MAIN RELAY
power supply. The MAIN RELAY output stage
gives 12 volts when ECU grounds the MAIN
RELAY at IGNITION ON. After IGNITION
OFF the ECU holds the MAIN RELAY
GROUND for some duration known as the
POWER LATCH period so that the vital
functionalities are powered ON for that
duration.
Precaution :
•
Do not disconnect the connector of the
ECU for at least 1 minute after IGNITION
OFF. Never disconnect the connector of
the ECU during IGNITION ON.
•
Ensure that ignition switch is in OFF
position while plugging - in the connector
to the ECU.
Input :
•
Ensure that the Input signal line is as far
as possible away from noise sources
such as High Tension Cable, Horn relay,
Motor etc.
•
Ensure that sealed wire are used for input
line of lambda oxygen Sensor, Crank
Angle Sensor and the wiring is as far as
possible from the noise sources similar to
the ones above. Sensor ground
connections should not be shorted to 12
volts supply.
Output :
Take care to avoid dead-short (solenoid
short-circuit
etc.)and
similar
circuit
misconnection while checking (to avoid any
damage). Use a solenoid which does not use
a fly - back diode (reverse polarity may
damage the Output Power Transistor).
