Mazda Protege 5. Manual - part 10

 

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Mazda Protege 5. Manual - part 10

 

 

ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (ZM)]

01–02A–6

Monitoring System

End Of Sie

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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (ZM)]

01–02A–7

01–02A

FOREWORD [ZM]

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When the customer reports a vehicle malfunction, check the malfunction indicator light (MIL) and diagnostic 
trouble code (DTC), then diagnose the malfunction according to following flowchart.
— If the DTC exists, diagnose the applicable DTC inspection. (See 01–02A–15 DTC TABLE [ZM].)
— If the DTC does not exist and the MIL does not illuminate or flash, diagnose the applicable symptom 

troubleshooting. (See 01–03A–7 SYMPTOM DIAGNOSTIC INDEX [ZM].)

* : Malfunction Indicator Light (MIL), Generator Warning Light, Security Light 

End Of Sie

OBD-II PENDING TROUBLE CODES [ZM]

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The following functions are generic functions.

These appear when a problem is detected in a monitored system. The MIL is illuminated when a problem is 
detected in two consecutive drive cycles. The code for a failed system is stored in the PCM memory in the first 
drive cycle. This code is called the pending code. If the problem is not found in the second drive cycle, the PCM 
judges that the system returned to normal or the problem was mistakenly detected, and deletes the pending 
code. If the problem is found in the second drive cycle too, the PCM judges that the system has failed, deletes 
the pending code, illuminates the MIL and store the DTC.

End Of Sie

OBD-II FREEZE FRAME DATA [ZM]

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This is the technical data which indicates the engine’s condition at the time of the first malfunction. This data 
will remain in the memory even if another emission-related DTC is stored, with the exception of the Misfire or 
Fuel System DTCs. Once freeze frame data for the Misfire or Fuel System DTC is stored, it will overwrite any 
previous data and the freeze frame will not be overwritten again.

End Of Sie

OBD-II ON-BOARD SYSTEM READINESS TEST [ZM]

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This shows OBD-II systems operating status. If any monitor function is incomplete, WDS or equivalent will 
identify which monitor function has not been completed. Misfires, Fuel System and Comprehensive 
Components (CCM) are continuous monitoring-type functions. The catalyst, EGR system, evaporation system 
and oxygen sensor will be monitored under drive cycles. The OBD-II diagnostic system is initialized by 
performing the DTC cancellation procedure or disconnecting the negative battery cable.

End Of Sie

OBD-II DIAGNOSTIC MONITORING TEST RESULTS [ZM]

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These results from the intermittent monitor system’s technical data, which are used to determine whether the 
system is normal or not. They also display the system’s thresholds and diagnostic results. The intermittent 
monitor system monitors the oxygen sensor, evaporative purge system, catalyst and the EGR system.

End Of Sie

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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (ZM)]

01–02A–8

OBD-II READ/CLEAR DIAGNOSTIC TEST RESULTS [ZM]

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The following are generic functions.

This retrieves all stored DTCs in the PCM and clears the DTC, Freeze Frame Data, On-Board Readiness Test 
Results, Diagnostic Monitoring Test Results and Pending Trouble Codes.

End Of Sie

OBD-II PARAMETER IDENTIFICATION (PID) ACCESS [ZM]

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The PID mode allows access to certain data values, analog and digital inputs and outputs, calculated values 
and system status information. Since PID values for output devices are PCM internal data values, inspect each 
device to identify which output devices are malfunctioning.

End Of Sie

ON-BOARD DIAGNOSTIC TEST [ZM]

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DTCs Retrieving Procedure

1. Perform the necessary vehicle preparation and visual inspection.
2. Connect WDS or equivalent to the vehicle DLC-2 

16-pin connector located on the left side of the 
steering column.

3. Retrieve DTC using WDS or equivalent.

Pending Trouble Code Access Procedure

1. Perform the necessary vehicle preparation and visual inspection.
2. Connect WDS or equivalent to the vehicle DLC-2 

16-pin connector located on the left side of the 
steering column.

3. Retrieve pending trouble code using WDS or 

equivalent.

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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (ZM)]

01–02A–9

01–02A

Freeze Frame PID Data Access Procedure

1. Perform the necessary vehicle preparation and visual inspection.
2. Connect WDS or equivalent to the vehicle DLC-2 

16-pin connector located on the left side of the 
steering column.

3. Retrieve FREEZE FRAME PID DATA using WDS 

or equivalent.

On-Board System Readiness Tests Access Procedure

1. Perform the necessary vehicle preparation and visual inspection.
2. Connect WDS or equivalent to the vehicle DLC-2 

16-pin connector located on the left side of the 
steering column.

3. Monitor the OBD-II system operating status using 

WDS or equivalent.

PID/DATA Monitor and Record Procedure

1. Perform the necessary vehicle preparation and visual inspection.
2. Connect WDS or equivalent to the vehicle DLC-2 

16-pin connector located on the left side of the 
steering column.

3. Access and monitor DTCs using WDS or 

equivalent.

Z3U0102W001

Z3U0102W001

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