Verifying DTCs Using Security Indicator Light (Immobilizer System)

NOTE:

If multiple DTCs are detected, only those having the lowest numbers of those detected will be indicated by the security light.
A DTC is displayed 10 times by switching the ignition ON (engine off or on) once.

Switch the ignition ON (engine off or on).
Wait for approx. 1 min until the security indicator light displays a DTC.
NOTE:
- If the following DTCs are detected when the ignition is switched ON (engine off or on), the DTC is displayed after the security indicator light is flashed or illuminated for approx. 1 min.
- If a DTC 16 or below is detected, the security indicator light flashes for approx. 1 min.
- If a DTC 22 or 23 is detected, the security indicator light illuminates for approx. 1 min.
- DTC 21 is displayed when the ignition is switched ON (engine off or on) and the security indicator light illumination turns off for approx. 1 min.
Read DTCs by the number of times the security indicator light flashes as shown in the figure below.
Example: DTC 13

Fig 1: Security Indicator Light Flashing Pattern
Courtesy of MAZDA MOTORS CORP.
Repair the malfunctioning part according to the applicable DTC troubleshooting based on the DTC which was verified by the number of times the security indicator light flashed. (See DTC TABLE (START STOP UNIT) .)