DTC U0320:09 [RADAR UNIT]
id1502a6019000
|
Description |
Steering angle signal malfunction |
|---|---|
|
Detection condition
|
• There is an error in the steering angle signal sent from the electric power steering (EPS) control module.
|
|
Fail-safe
|
• Inhibits the Mazda radar cruise control (MRCC) system control
• Inhibits the smart brake support (SBS) system control
• Inhibits the distance recognition support system (DRSS) control
|
|
Possible cause
|
• DTCs are stored in the start stop unit.
• DTCs are stored in the electric power steering (EPS) control module.
• Electric power steering (EPS) control module malfunction
• Radar unit malfunction
|
|
System wiring diagram
|
Not applicable
|
Diagnostic Procedure
|
Step |
Inspection |
Action |
|
|---|---|---|---|
|
1
|
VERIFY START STOP UNIT DTCs
• Retrieve the start stop unit DTCs using the M-MDS.
• Are any other DTCs displayed?
|
Yes
|
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [START STOP UNIT].)
|
|
No
|
Go to the next step.
|
||
|
2
|
VERIFY ELECTRIC POWER STEERING (EPS) CONTROL MODULE DTCs
• Retrieve the electric power steering (EPS) control module DTCs using the M-MDS.
• Are any other DTCs displayed?
|
Yes
|
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
|
|
No
|
Go to the next step.
|
||
|
3
|
VERIFY IF MALFUNCTIONING LOCATION IS ELECTRIC POWER STEERING (EPS) CONTROL MODULE DEPENDING ON REPEATABILITY
• Clear the DTC for the radar unit using the M-MDS.
(See CLEARING DTC [RADAR UNIT].)
• Retrieve the radar unit DTCs using the M-MDS.
(See DTC INSPECTION [RADAR UNIT].)
• Is the same DTC displayed?
|
Yes
|
Replace the electric power steering (EPS) control module, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
4
|
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Clear the DTC for the radar unit using the M-MDS.
(See CLEARING DTC [RADAR UNIT].)
• Retrieve the radar unit DTCs using the M-MDS.
(See DTC INSPECTION [RADAR UNIT].)
• Is the same DTC displayed?
|
Yes
|
Replace the radar unit, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
5
|
VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
|
Yes
|
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [RADAR UNIT].)
|
|
No
|
DTC troubleshooting completed.
|
||