Blue Bird bus child check alarm always running can not cancel

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Blue Bird bus child check alarm always running can not cancel
CHILD CHECK-MATE wiring PDF download here.

1. Test. Problem shows as title.

2. Check the power of connector to the Child Check Module
   There are 6 wires, normal, as following shows:
   BATTERY - RED WIRE
   GROUND - BLACK WIRE
   IGNITION - YELLOW WIRE
   FRONT WARNING BUZZER - BLUE WIRE
   OVERHEAD FLASHING LIGHTS - BROWN WIRE
   VEHICLE HORN - GREEN WIRE
   Also compared to the normal unit. The power of 6 pins are the same.

3. Check the RVT (Rear Vehicle Transmitter& Reset Button)
   Unscrew the RVT, cut the three wires(Blue, Red, Black), replaced with new one, same problem. Can not cancel the alarm.

4. Connect the new RVT directly to the Child Check Module. Blue–>Blue, Red–>Red, Black–>Black. Key on, press the brake to activate the Child Check Module, press the RVT for several seconds, key off, the alarm was cancelled. Problem was the blue wire.

5. Split one blue wire from the fuse box to the very end interior, reconnecting the RVT blue wire.
   

   
   
   
   
   
   
   
   
   
   
   
   
   

6. Test. Normal. Child check alarm can cancel.