System Deactivation Troubleshooting
Can’t deactivate your Child Check-Mate System?
Key is in the wrong position for deactivation to occur.
Determine if your system is deactivated with the ignition in key 'ON' or key 'OFF'. Position the key accordingly before attempting to deactivate your system. Check the instructional decal to confirm if your ignition key must be in the 'ON' or 'OFF' position.
Brown wire hot during deactivation.
If 12v is measured on the brown activation wire during the deactivation phase the system will not deactivate. There must be zero voltage on the brown activation wire during deactivation. The brown wire must be connected so that it sees 12v momentarily for the purpose of activating the system and/or for accessing the road crossing feature.
Front Door/s open, Park brake not set
These signals are module and installation dependant. If this is the case System Tones should be heard indicating what the issue is.
Ground present on the blue deactivation wire/emergency doors open.
Deactivation will not occur if a ground is present on the blue deactivation wire. The Child Check-Mate System has a built in ground detection feature. If a ground is present on the on the deactivation circuit the following ground detection tone will be emitted from the module. If the bus emergency door circuit is used for transmission of the deactivation signal the doors must be closed as open emergency doors typically ground the blue wire.
Yellow ignition wire hot when key is 'OFF'
The yellow ignition wire measures 12V when the key is in off position, select another ignition point that reads 0V when the key is in the 'OFF' position and 12V when the ignition is on.
Blue wire signal transmission loss on deactivation circuit utilizing existing bus wiring.
Remove the RVT from the rear of the bus and connect it directly to the module eliminating the existing bus wiring (blue to blue, black to ground). If the system deactivates we recommend you run a dedicated wire from the module to the rear of the bus where the RVT is located.
Defective RVT
A LED light inside the button will flash when the button is pressed on second generation RVT's indicating that there is power to the RVT. The following Deactivation Tone should be heard from the brain unit when the RVT button is pressed for 3 seconds. If not do the following Detailed procedure to check RVT operation.
Defective Module
Measure your module open circuit deactivation wire voltage by measuring the output voltage coming from the blue wire on the 6-Pin connector. You should measure approximately 10-12v. If you measure a low voltage or zero voltage it may indicate a problem with the module. Please contact technical support
