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Home >> Mazda >> 2023 >> 3 Select, 4D Hatchback >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Symptom Troubleshooting - Adjustable Speed Limiter (ASL) >> Vehicle Speed Cannot Be Set To Desired Speed >> Diagnostic Procedure

Diagnostic Procedure

VEHICLE SPEED CANNOT BE SET TO DESIRED SPEED (ADJUSTABLE SPEED LIMITER (ASL)) DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY ALL SYSTEM DTCs 
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any DTCs displayed?
Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No Go to the next step.
2 INSPECT CRUISE CONTROL SWITCH FOR MALFUNCTION  Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification. (See CRUISE CONTROL SWITCH REMOVAL/INSTALLATION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM] .)
Repair completion verification VERIFY THAT VEHICLE IS REPAIRED 
  • Install/connect the part removed/disconnected during the troubleshooting procedure.
  • Has the malfunction symptom been eliminated?
Yes Complete the symptom troubleshooting. (Explain contents of repair to customer)
No Refer to the CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)] .)
If the CAN communication is normal, perform the diagnosis from Step 1.