Mazda 2: Foreword
- When the customer reports a vehicle malfunction, check the malfunction
indicator lamp (MIL) indication and
diagnostic trouble code (DTC), then diagnose the malfunction according to
the following flowchart.
- If a DTC exists, diagnose the applicable DTC inspection. (See DTC
TABLE ).
- If a DTC does not exist and the MIL does not illuminate or flash,
diagnose the applicable
symptom troubleshooting. (See QUICK DIAGNOSTIC CHART ).

*: Malfunction Indicator Lamp (MIL), Generator Warning Light, Security Light
OBD-II PENDING TROUBLE CODE
- These appear when a problem is detected in a monitored system. 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 PCM determines that the system has returned to normal
or the
problem was mistakenly detected, it deletes the pending code. If the problem
is found
in the second drive cycle, too the PCM determines that the system is
malfunctioning,
and the DTC is stored.
OBD-II FREEZE FRAME DATA
- This is technical data which indicates the engine 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 DATA will not be overwritten again.
OBD-II ON-BOARD SYSTEM READINESS TEST
- This shows the OBD-II systems operating status. If any monitor function
is incomplete,
the M-MDS 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.
OBD-II READ/CLEAR DIAGNOSTIC TEST RESULTS
- 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.
OBD-II PARAMETER IDENTIFICATION (PID) ACCESS
- 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.
READ NEXT:
DTC Reading Procedure
1. Connect the M-MDS (IDS) to the DLC-2.
2. After the vehicle is identified, select the following items from the
initialization screen of
the IDS.
Select "Self Test".
Select
Using the OBD-II Drive Mode, the monitoring item requested by OBD-II
regulations can be easily diagnosed.
Performing the Drive Mode inspects the OBD-II system for proper
operation and must be p
SEE MORE:
ELECTRIC POWER STEERING (EPS) SYSTEM WIRING DIAGRAM
ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS
On-Board Diagnostic (OBD) Test Description
The OBD test inspects the integrity and function of the EPS and outputs
the results when
requested by the specific tests.
On-board diagnostic test al
WARNING
Never adjust the steering wheel while
the vehicle is moving:
Adjusting the steering wheel while the
vehicle is moving is dangerous. Moving
it can very easily cause the driver
to abruptly turn to the left or right.
This can lead to loss of control or an
accident.
Steering Wheel Adj
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