SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (AJ]DTC P0116 [AJ]DIAGNOSTIC PROCEDURE
2008 Mazda 6 s Sport, 4D Hatchback, Standard

Diagnostic procedure

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Diagnostic procedure
DTC P0116 [AJ] DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED 
  • Have FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS (Engine cooling system related) been recorded?
 Yes Go to the next step.
No Record FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS on 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 next step.
No Go to the next step.
3 IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA 
  • Is DTC P0116 on FREEZE FRAME DATA?
 Yes Go to the next step.
No Go to troubleshooting for DTC on FREEZE FRAME DATA.
(See DTC TABLE [AJ] ).
4 INSPECT ECT SENSOR CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch off.
  • Disconnect ECT sensor connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 8.
No Go to the next step.
5 INSPECT ECT SENSOR 
 Yes Replace the ECT sensor, then go to Step 8.
No Go to the next step.
6 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch off.
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 8.
No Go to the next step.
7 COMPARE ECT PID VALUE 
  • Prepare a new ECT sensor.
  • Clear the DTC from the PCM memory using the M-MDS.
  • Connect the ECT sensor connector to the new ECT sensor without installing to the engine.
  • Turn the ignition switch to the ON position and record the ECT PID value.
  • Replace the malfunction ECT sensor with new one.
  • Start the engine and wait for 5 min  .
  • Record the ECT PID value.
  • Is the difference between ECT PID values more than 6 °C {42 °F}  ?
 Yes Go to the next step.
No Inspect the thermostat.
  • If the thermostat is normal, go to the next step.
  • If the thermostat is no normal, then go to the next step.
8 VERIFY TROUBLESHOOTING OF DTC P0116 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS.
  • Run Drive Mode 1 and 3.

    (See OBD-II DRIVE MODE [AJ] ).

  • Is the PENDING CODE same DTC present?
 Yes Replace PCM, then go to next step.
(See PCM REMOVAL/INSTALLATION [AJ] ).
No Go to the next step.
9 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to applicable DTC inspection.
(See DTC TABLE [AJ] ).
No Troubleshooting completed.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.