DTC troubleshooting flow (on-board diagnostic)
- Diagnostic trouble codes (DTCs) are important hints for repairing malfunctions that are difficult to simulate. Perform the specific DTC diagnostic inspection to quickly and accurately diagnose the malfunction.
- The on-board diagnostic function is used during inspection. When a DTC is shown specifying the cause of a malfunction, continue the diagnostic inspection according to the items indicated by the on-board diagnostic function.
Diagnostic index
- The diagnostic index lists the symptoms of specific malfunctions. Select the symptoms related or most closely relating to the malfunction.
Quick diagnosis chart (If mentioned)
- The quick diagnosis chart lists diagnosis and inspection procedures to be performed specifically relating to the cause of the malfunction.
Symptom troubleshooting
- Symptom troubleshooting quickly determines the location of the malfunction according to symptom type.
Scheme 2
- Perform the basic inspection procedure before symptom troubleshooting.
- Perform each step in the order shown.
- The reference column lists the location of the detailed procedure for each basic inspection.
- Although inspections and adjustments are performed according to the reference column procedures, if the cause of the malfunction is discovered during basic inspection, continue the procedures as indicated in the action column. (Scheme 2): Basic Inspection Chart
Using the DTC troubleshooting flow
- DTC troubleshooting flow shows diagnostic procedures, inspection methods, and proper action to take for each DTC.
Typical DTC Troubleshooting Flow Chart. Scheme 3
Using the diagnostic index
- Malfunction symptoms are listed in the diagnostic index under symptom troubleshooting.
- The exact malfunction symptoms can be selected by following the index.
Scheme 4
- The related malfunction cause can be understood.
- The relation between the malfunction symptom and cause is indicated.
- The relation between the malfunction symptom and cause can be detected quickly, and if multiple malfunction symptoms occur, the area which is the common cause among the multiple malfunctions can be specified.
- The effective inspection procedure for the malfunction cause specified from the malfunction symptoms can be selected using the inspection procedure chart. (Scheme 4): Symptom Quick Diagnostic Chart
Scheme 5
- Symptom troubleshooting shows diagnostic procedures, inspection methods, and proper action to be taken for each trouble symptom. (Scheme 5): Symptom Troubleshooting Diagnostic Procedure Chart
Malfunction Diagnosis System
- Use the Mazda Modular Diagnostic System (M-MDS) for malfunction diagnosis.
Scheme 6
- With the ignition switched off, connect the malfunction diagnosis system to the DLC-2 connector shown in the figure. (Scheme 6): Identifying DLC-2 Connector
Oil Leakage Inspection
- Use either of the following procedures to identify the type of oil that is leaking
Road test
INSPECT the following items
Brake operation
Operation of gauges
Engine general performance
Emergency locking retractors and automatic locking retractors
Cruise control system (if equipped)
Operation of meters and gauges, squeaks, rattles, and abnormal noises
After road test
INSPECT for necessary owner information materials, tools, and spare tire in vehicle The following items must be completed just before delivery to your customer.
Load test battery and charge if necessary (Load test result: Volts)
Adjust tire pressure to specification
Install fuses for accessories