Home/Mazda/RX-8/Mazda RX-8 I (2003-2008)/Repair manual/Testing & Diagnostics/On-Board Diagnostic (Engine Control System) 13BMSP: Overview
Contents Wiring diagrams Section: Testing & Diagnostics All sections

On-Board Diagnostic (Engine Control System) 13BMSP: Overview Mazda RX-8 I

Testing & Diagnostics 10 illustrations ~319 words

Scheme 1

Scheme 1: CONTROL SYSTEM WIRING DIAGRAM

Scheme 2

Scheme 2

Scheme 3

Scheme 3: MONITORING SYSTEM AND CONTROL SYSTEM DEVICE RELATIONSHIP CHART

OBD-II PARAMETER IDENTIFICATION (PID) ACCESS

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

Scheme 4

Scheme 4: DTC Reading Procedure
  1. Perform the necessary vehicle preparation and visual inspection.
  2. Connect the WDS or equivalent to the vehicle DLC-2 16-pin connector located in the driver compartment.
  3. Retrieve the DTCs using the WDS or equivalent.

Scheme 5

Scheme 5: Pending Trouble Code Access Procedure
  1. Perform the necessary vehicle preparation and visual inspection.
  2. Connect the WDS or equivalent to the vehicle DLC-2 16-pin connector located in the driver compartment.
  3. Retrieve the pending trouble codes using the WDS or equivalent.

Scheme 6

Scheme 6: Freeze Frame PID Data Access Procedure
  1. Perform the necessary vehicle preparation and visual inspection.
  2. Connect the WDS or equivalent to the vehicle DLC-2 16-pin connector located in the driver compartment.
  3. Record the freeze frame PID data using the WDS or equivalent.

Scheme 7

Scheme 7: On-Board System Readiness Tests Access Procedure
  1. Perform the necessary vehicle preparation and visual inspection.
  2. Connect the WDS or equivalent to the vehicle DLC-2 16-pin connector located in the driver compartment.
  3. Monitor the OBD-II systems operating status using the WDS or equivalent.

Scheme 8

Scheme 8: PID/DATA Monitor and Record Procedure
  1. Perform the necessary vehicle preparation and visual inspection.
  2. Connect the WDS or equivalent to the vehicle DLC-2 16-pin connector located in the driver compartment.
  3. Access and monitor PIDs using the WDS or equivalent.

Scheme 9

Scheme 9: Diagnostic Monitoring Test Results Access Procedure
  1. Perform the necessary vehicle preparation and visual inspection.
  2. Connect the WDS or equivalent to the vehicle DLC-2 16-pin connector located in the driver compartment.
  3. Access to the diagnostic monitoring test results and read the test results using the WDS or equivalent.

Scheme 10

Scheme 10: AFTER REPAIR PROCEDURE
  1. Connect the WDS or equivalent to the DLC-2.
  2. Cycle the ignition switch off, then to the ON position (Engine off).
  3. Record DTC if retrieved.
  4. Clear all diagnostic data using the WDS or equivalent.