BENDIX BW1670 Manual de usuario Pagina 19

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19
TROUBLESHOOTING
SECTION VI B
TESTING FOR THE FRONT MODULATOR
START HERE
from Section VI A
Go to modulator, inspect wiring connector. Disconnect
connector and test resistance between pins on modulator.
Resistance values here for Bendix
®
M-21
modulator.
Hold to Source (C to B): ......................... Read 3.5 to 5 Ohms
Exhaust to Source (A to B): .................... Read 3.5 to 5 Ohms
Exhaust to Hold (A to C): ........................ Read 7 to 10 Ohms
Test each pin to vehicle ground and note no continuity
Are resistance values correct?
Replace the front (M-21
)
modulator
NO
Reconnect connector to modulator. Turn ignition
on and pass magnet over “RESET” on EC-14
controller and remove. Note reaction of red LEDs
Are any red LEDs
illuminated?
Repeat the “Initial Start-up
Procedure”
Are same red LEDs
illuminated?
YES
NO
Go to Section IV
“Inspection for Illuminated
red LEDs” and retest
YES
Repair or replace
modulator wire harness
C
HOLD
A
EXHAUST
B
SOURCE
NO
RESETTING
EC-14
CONTROLLER
MAGNET
HERE
YES
Connector on M-21
Front Modulator
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