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Diagnostic procedure

DTC P0101 DIAGNOSTIC PROCEDURE CHART

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 CURRENT INPUT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT? 
  • Connect the M-MDS or equivalent to the DLC-2.
  • Start the engine.
  • Access the TP and MAF PIDs.
  • Read the MAF PID when the TP PID is more than 50%  .
  • Is the MAF PID less than 9 g/s {1.2 lb/min}? 
 Yes Verify that the TP PID changes smoothly while gradually opening throttle valve.
No Go to the next step.
4 VERIFY CURRENT INPUT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT? 
  • Connect the M-MDS or equivalent to the DLC-2.
  • Start the engine.
  • Access the ECT, RPM and MAF PIDs.
  • Warm-up the engine until the ECT PID is more than70°C{158°F}  .
  • Read the MAF PID when the RPM PID is less than 2,000 rpm  .
  • Is the MAF PID more than 65 g/s {8.6 lb/min}? 
 Yes Go to Step 6.
No Intermittent concern exists. Perform the INTERMITTENT CONCERN TROUBLESHOOTING .
5 VERIFY TROUBLESHOOTING OF DTC P0101 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS or equivalent.
  • Start the engine.
  • Access the TP PID.
  • Drive the vehicle for 5 s or more  when the TP PID is more than 50%  .
  • Is the PENDING CODE same as the DTC present?
 Yes Replace the PCM, then go to Step 9. (See PCM REMOVAL/INSTALLATION )
No Go to Step 9.
6 INSPECT MAF SENSOR 
 Yes Replace the MAF/IAT sensor, then go to Step 8. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION )
No Go to the next step.
7 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.
8 VERIFY TROUBLESHOOTING OF DTC P0101 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS or equivalent.
  • Start the engine.
  • Access the ECT and RPM PIDs.
  • Warm-up the engine until the ECT PID is more than70°C {158°F}  .
  • Drive the vehicle for 5 s or more  when the RPM PID is less than 2,000 rpm  .
  • Is the PENDING CODE same as the DTC present?
 Yes Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION )
No Go to the next step.
9 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection. (See DTC TABLE ).
No DTC troubleshooting completed.
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