Operation Condition; Rear Sensor; Troubleshoot - Mazda C860 V7 281A Installation Instructions Manual

11．OPERATION CONDITION
■
Is available when the ignition is switched ON and shift lever is in the R position.
■
The sensor detects obstructions when the shift lever is in the R position.
・ Alarm (beeper) sound
■
The beeper operates (sounds) as follows while the system is operating.
◇Back sensor
Distance between the vehicle
and the obstruction
Approx.130-100cm (4.3-3.3 ft)
Approx.100-50cm (3.3-1.6 ft)
Within approx.40cm (1.3 ft)
* The closer the obstruction is approached the faster the continuous sound is emitted.
12．TROUBLESHOOT
Malfunction symptom
Alarm sound (buzzer) does not activate even though
there is an obstruction around the sensor.
Alarm sound (buzzer) activates even though there is
no obstruction around the sensor.
06DE4313B

◇ Rear sensor

Distance between the vehicle
Beeper
sound*
and the obstruction
Approx.60-50cm (2.0-1.6 ft)
Slow
intermittent
sound
Approx.50-40cm (1.6-1.3 ft)
Fast
intermittent
sound
Within approx.40cm (1.3 ft)
Continuous
sound
Inspection
Is the ignition switched ON?
Is each part connected correctly?
(Each connector, reverse signal line,
ground terminal)
Is there a device generating ultrasonic
waves near the vehicle?
(Air compressor, high-pressure car
washer, impact wrench, or electric drill)
Is the shift lever in the R position?
Is the ground detected?
* If beep sound stops after placing
cardboard on the ground, the ground
may be detected.
40
Beeper
sound*
Slow
intermittent
sound
Fast
intermittent
sound
Continuous
sound
Action
Switch the ignition ON.
Connect each part correctly.
Take the device away from the
ultrasonic wave generation
source.
Shift the shift lever to the R
position.
Install the sensor correctly.