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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 493 (Symptom Troubleshooting [Engine Control System BP, BP With TC)) >> No.9 Fast Idle/Runs On >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
NO.9 FAST IDLE/RUNS ON [BP, BP WITH TC] DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1
  • Connect WDS or equivalent to DLC-2.
  • Access ECT PID.
  • Start and warm up engine to normal operating temperature.
  • Is ECT PID reading between 112°C {234°F} and 82°C {180°F}  ?
 Yes Go to the next step.
No If ECT PID is higher than 112°C {234°F}  :
Go to NO.17 COOLING SYSTEM CONCERNS-OVERHEATING .
If ECT PID is less than 82°C {180°F}  :
Go to NO.18 COOLING SYSTEM CONCERNS-RUNS COLD .
2
  • Connect WDS or equivalent to DLC-2.
  • Turn ignition switch to ON.
  • Retrieve any DTC.
  • Is "PASSED" displayed?
 Yes No DTC displayed: 
  • Go to the next step.
No DTC displayed: 
  • Go to appropriate DTC test.
3
  • Is there air leakage felt or heard at intake-air system components while racing engine to higher speed?
 Yes Repair or replace parts if necessary.
No Verify accelerator control cable free play.
(See ACCELERATOR CABLE INSPECTION/ADJUSTMENT )
4
  • Verify test results.
    • If okay, return to diagnostic index to service any additional symptoms.
    • If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
      • If vehicle is repaired, troubleshooting completed.
      • If vehicle is not repaired or additional diagnostic information is not available, replace PCM.
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