Doran SCC-AM-00 Kurulum ve Kullanım Kılavuzu - Sayfa 15

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Sayfayı Yazdır

1. Basic Operation

IX. Troubleshooting

Problem

Horn does not activate when I turn off accessory

power and open the front door, but I can hear a

relay inside the SCC module clicking on and off.

Horn does not activate when I turn off

accessory power and open the

front door, and I do not hear any relays

clicking inside the SCC module.

Horn activates immediately when the

ignition/accessory switch is turned off.

Horn does not activate when I turn off accessory

power and open the front door, and I do not

hear any relays clicking inside the SCC module.

TO FLASHER UNIT DOOR INPUT

RECONNECT TO FLASHER DOOR INPUT

If the front door switch is activates+12V/+24V at the output, the door switch

wire should read "0" Volts when the door is closed, and +12V or +24V when

the door is open, then P7 on the SCC should be used. If the front door switch

is grounds the switch output, the door switch wire should read +5 to

+12V/+24V when the door is closed, and "0" Volts when the door is open. In

this case the door switch wire should be connected to P8.

(1.) Sometimes another device is connected to the same door switch and it

"grounds" the SCC door input through "leakage" when the power is off to the

device (sometimes the flasher unit will cause this). In this case the SCC door

input must be isolated from the other device(s), or a separate door switch or

contact must be used for the SCC. A diode has been provided on the SCC

that may provide isolation from the other device. (See Fig. 6)

After the grounding door switch is directly connected to the SCC, connect the

other device (flasher) to P9. Retest the operation of each device, as the

device attached to P9 will not go completely to 0V when the door switch is

grounded.

(2.) Door Switch is wired in conjunction with dome lights and a (new) dooro

jamb Switch is required to activate SCC-AM properly

(3.) Check that door is not open or ajar causing the system to go to

into warning mode

Check that the monitor has been ARMED. The yellow LED should be

illuminated. If not illuminated, check ARM input (P6) "Warn LTS" that

must receive a Bat + logic high after the ignition input is on.

DETACH AND INSULATE WIRE

FRONT DOOR

SWITCH

GND

FIGURE 6

Check the connection on the horn relay wire. Verify that you have

made a secure connection.

TO RESET SWITCH at Rear of Bus

Solution