BENDIX EC-30 ABS-ATC CONTROLLER Manual page 26

SECTION G - TROUBLESHOOTING POWER TO THE EC-30
ABS Warning lamp is on and green
VLT LED is off or flashing.
Due to corrosion, damage or poor
termination, the wiring and/or
connectors may be limiting the
electrical current flow to the EC-30
controller. This means that when the
EC-30 ™ controller needs more current,
the voltage level may be dropping. In
order to measure the voltage under
load, place a load, such as a type 1157
stop lamp bulb, between ignition power
(pins B1, K2, K3) and ground (pins A1,
A2, A3) at the 30-pin connector. While
the lamp is in place, measure the
voltage across the pins. It is important
to check each power and ground pin
combination. The operating range of
the EC-30 is 9.0-16.0 VDC. Verify a
measurement equal to battery voltage.
(About 12.0 VDC) The loaded voltage
should drop no more than 1.0 VDC
from the measured unloaded voltage.
With a volt/ohm meter, check the
power and ground wiring. Look for
corroded or damaged wires or
connectors. If repair is made,
reconnect the 30-pin connector to the
EC-30 ™ controller and rerun the
power up sequence.
Go to Section A.
If proper loaded and unloaded voltage
is measured at the 30-pin connector
and no corrosion or damage is found
on the EC-30
replace the EC-30
26
™
™ controller connector,
™
controller.
Turn the ignition off and disconnect the
30-pin connector from the EC-30
controller.
Turn the ignition on and measure voltage
between ignition power (pins B1, K2, K3)
and ground (pins A1, A2, A3) at the 30-
pin connector. It is important to check
each power and ground pin combination.
YES
The operating range of the EC-30
controller is 9.0 -16.0 VDC. Verify a
measurement equal to battery voltage.
(About 12.0 VDC)
With a volt/ohm meter, check the
power wiring, ground wiring and fuse.
Look for corroded or damaged wires
or connectors. When repair is made,
reconnect the 30-pin connector to the
EC-30 ™ controller and rerun the
power up sequence.
Go to Section A.
Measure the loaded
voltage across a type
1157 stop lamp bulb.
30-Pin Connector
K J H G F
A1,A2,A3
B1,K2,K3
™
CONTROLLER
™
™
NO
1
2
3
E D C B A
Ground
Power