MRCC CANNOT BE SET [RADAR UNIT]

id1503a1011200

Item
MRCC CANNOT BE SET [RADAR UNIT]
Description
•  The vehicle speed and the distance between the vehicles cannot be set using the cruise control switch.
Possible Causes
•  DSC or TCS is turned off
•  Vehicle speed is outside of operation condition range
•  Driver's seat belt is not fastened
•  Buckle switch malfunction
•  Door latch switch malfunction
•  Cruise control switch malfunction
•  Selector lever position malfunction
•  Radar unit malfunction

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY DTCs
•  Display the radar unit DTC using the M-MDS.
•  Is a DTC displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [RADAR UNIT])
No
Go to the next step.
2
VERIFY DRIVING CONDITION
•  Ask the customer if the condition was any of the following conditions when the malfunction occurred.
?  DSC or TCS is turned off
?  Vehicle speed is outside of operation conditions described in technical guide
?  Driver's seat belt is not fastened
•  Is any of the above driving conditions met?
Yes
The vehicle is normal.
Complete the symptom troubleshooting.
No
Go to the next step.
3
VERIFY WARNING/INDICATOR LIGHT ON CONDITION
•  Verify whether the following instrument cluster warning/indicator lights are turned on or flashing.
?  Seat belt warning indication
?  Door-ajar warning indication
•  Are any of the above indications displayed?
Yes
Verify the type of warning/indicator light displayed.
If the seat belt warning indication is turned on or flashing:
•  Go to the next step.
If the door-ajar warning indication is turned on or flashing:
•  Go to Step 5.
No
Go to Step 6.
4
INSPECT BUCKLE SWITCH (DRIVER)
•  Inspect the buckle switch (driver).
•  Is the buckle switch (driver) normal?
Yes
Go to Step 6.
No
Replace the driver's front buckle, then go to Step 6.
(See FRONT BUCKLE REMOVAL/INSTALLATION)
5
INSPECT FRONT AND REAR DOOR LATCH SWITCHES (RH/LH)
•  Inspect the front and rear door latch switches (RH/LH).
•  Are the front and rear door latch switches (RH/LH) normal?
Yes
Go to the next step.
No
Replace the malfunctioning door latch and lock actuator, then go to the next step.
(See FRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION)
(See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION)
6
INSPECT CRUISE CONTROL SWITCH
•  Inspect the cruise control switch.
•  Is the cruise control switch normal?
Yes
Go to the next step.
No
Replace the cruise control switch, then go to the next step.
(See CRUISE CONTROL SWITCH REMOVAL/INSTALLATION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM])
7
VERIFY SELECTOR LEVER POSITION RECOGNITION CONDITION
•  Operate the selector lever and verify whether the selector lever position is correctly indicated in the instrument cluster.
•  Is the selector lever position correctly indicated in the instrument cluster?
Yes
Go to the next step.
No
Replace the selector cable, then go to the next step.
(See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION)
8
INSPECT RADAR UNIT
•  Inspect the radar unit.
•  Is the radar unit normal?
Yes
Complete the symptom troubleshooting.
No
Replace the radar unit.
(See RADAR UNIT REMOVAL/INSTALLATION)