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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 432 (ON-BOARD DIAGNOSTIC (ENGINE CONTROL SYSTEM 13BMSP])DTC P0507DIAGNOSTIC PROCEDURE
1999 Mazda 626 ES, 2.5 D, Standard

Diagnostic procedure

1999 Mazda 626 ES, 2.5 D, StandardSECTION Diagnostic procedure
WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0507 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has FREEZE FRAME DATA been recorded?
 Yes Go to the next step.
No Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Verify related Service Bulletins and/or on-line repair information availability.
  • Is any related repair information available?
 Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
3 VERIFY RELATED PENDING CODE OR STORED DTC 
  • Turn the ignition switch off, then to the ON position (Engine off).
  • Verify the related PENDING CODE or stored DTCs.
  • Are other DTCs present?
 Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No Go to the next step.
4 INSPECT VACUUM HOSE FOR POOR CONNECTION 
 Yes Go to the next step.
No Connect the vacuum hose correctly, then go to Step 10.
(See INTAKE-AIR SYSTEM HOSE ROUTING DIAGRAM .)
5 INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION 
 Yes Repair or replace the malfunctioning part according to the inspection results.
Then go to Step 10.
No Go to the next step.
6 INSPECT IAT SENSOR 
 Yes Replace the MAF/IAT sensor, then go to Step 10.
(See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION .)
No Go to the next step.
7 INSPECT ECT SENSOR 
 Yes Replace the ECT sensor, then go to Step 10.
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION .)
No Go to the next step.
8 INSPECT APP SENSOR 
 Yes Replace the APP sensor, then go to Step 10.
(See ACCELERATOR PEDAL REMOVAL/INSTALLATION .)
No Go to the next step.
9 INSPECT ECCENTRIC SHAFT POSITION SENSOR 
 Yes Replace the eccentric shaft position sensor, then go to the next step.
(See ECCENTRIC SHAFT POSITION SENSOR REMOVAL/INSTALLATION .)
No Go to the next step.
10 VERIFY TROUBLESHOOTING OF DTC P0507 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Start the engine.
  • Is the PENDING CODE same as DTC present?
 Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION .)
No Go to the next step.
11 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No DTC troubleshooting completed.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.