LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2006 >> 6 i, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3) >> DTC P0112 >> Diagnostic Procedure

Diagnostic Procedure

DTC P0112 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 FREEZE FRAME DATA on repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Check for related Service Bulletins and/or online 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 INSPECT IAT SENSOR TERMINAL 
  • Turn the ignition switch off.
  • Disconnect MAF/IAT sensor connector.
  • Inspect for bent terminal of MAF/IAT sensor terminals D and E (part-side).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 7.
No Go to the next step.
4 CLASSIFY IAT SENSOR MALFUNCTION OR HARNESS MALFUNCTION 
  • Connect WDS or equivalent to DLC-2.
  • Access IAT PID.
  • Verify IAT value when disconnecting MAF/IAT sensor connector.
  • Does IAT value change?
 Yes Replace MAF/IAT sensor, then go to Step 7.
No Go to the next step.
5 INSPECT IAT SIGNAL CIRCUIT FOR SHORT TO GROUND 
  • Turn the ignition switch off.
  • Disconnect PCM connector.
  • Inspect continuity between MAF/IAT sensor terminal D (wiring harness-side) and body ground.
  • Is there continuity?
 Yes Repair or replace harness for short to ground, then go to Step 7.
No Go to the next step.
6 INSPECT IAT CIRCUITS FOR SHORT 
  • Inspect continuity between MAF/IAT sensor terminals D and E (wiring harness-side).
  • Is there continuity?
 Yes Repair or replace harness for short, then go to Step 7.
No Go to the next step.
7 VERIFY TROUBLESHOOTING OF DTC P0112 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Turn ignition switch to ON (Engine off).
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Start engine and warm it up completely.
  • Is same DTC present?
 Yes Replace PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION ).
No Go to the next step.
8 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE ).
No Troubleshooting completed.
scientia non olet · About LEMON Manuals