LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0325 Or DTC P0326 >> Diagnostic Procedures

Diagnostic Procedures

  1. If QUICK TEST was not performed, go to QUICK TEST  under SELF-DIAGNOSTIC SYSTEM. If QUICK TEST was performed, go to next step.

  2. Check Voltage Between Sensor & SIG RTN

    Verify KS is installed properly and harness connector is connected securely. Complete COMPREHENSIVE COMPONENT MONITOR REPAIR VERIFICATION DRIVE CYCLE . Turn ignition on, engine off. Access KSI PID. If KSI PID reading is less than 0.5 volt, go to next step. If KSI PID is more than 0.5 volt, go to step  6.

  3. Check KS Resistance

    Disconnect KS harness connector. Disconnect PCM 104-pin harness connector. Connect Breakout Box (49-UN01-130) to PCM harness connector only. See Figure. Measure resistance between breakout box terminal No. 87 (2.0L) or terminal No. 32 (3.0L) and breakout box terminal No. 57. If resistance reading is more than 5.35 megohms, go to next step. If resistance reading is less than 4.39 megohms, go to step  5. If resistance reading is 4.39-5.35 megohms, go to step  7.

  4. Check For Open Of KS(+) Circuit

    Measure the resistance of KS(+) circuit (Yellow/Red wire) between breakout box terminal No. 57 and KS harness connector. If resistance reading is less than 5.0 ohms, replace KS. After repair, go to step  8. If resistance reading is more than 5.0 ohms, repair open in Yellow/Red wire between KS and PCM 104-pin harness connector terminal No. 57. See WIRING DIAGRAMS article. After repair, go to step  8.

  5. Check KS Circuits For Short To Ground In Harness

    Measure resistance of KS(+) circuit (Yellow/Red wire) between breakout box terminal No. 57 and KS harness connector. Measure the resistance of KS(-) circuit (Dark Green/Violet wire) between ground and breakout box terminal No. 87 (2.0L) or terminal No. 32 (3.0L). If resistance reading is more than 10,000 ohms, go to next step. If resistance reading is less than 10,000 ohms, repair short circuit. See WIRING DIAGRAMS article. After repair, go to step  8.

  6. Check KS(+) Circuit For Short To Power In Harness

    Connect PCM to breakout box 104-pin harness connector. Turn ignition on, engine off. Measure voltage of KS(+) circuit (Yellow/Red wire) between breakout box terminal No. 57 and negative battery terminal. If voltage reading for KS(+) was less than one volt, replace PCM. After repair, go to step  8. If voltage reading for KS(+) was more than one volt, repair short in Yellow/red wire between PCM 104-pin harness connector terminal No. 57 and KS harness connector. See WIRING DIAGRAMS article. After repair, go to step  8.

  7. Check PCM For Short To Ground

    Reconnect PCM 104-pin harness connector to PCM. Measure resistance between KS(+) and KS(-) circuits at KS harness connector. See WIRING DIAGRAMS article. If resistance reading is more than 10,000 ohms, replace KS. After repair, go to next step. If resistance reading is less than 10,000 ohms, replace PCM. After repair, go to next step.

  8. Verify Trouble Shooting Of DTCs Completed

    Reconnect all disconnected connectors. Clear DTCs from PCM memory using scan tool. Perform QUICK TEST  under SELF-DIAGNOSTIC SYSTEM. If same DTC is present, replace faulty PCM. Repeat QUICK TEST  under SELF-DIAGNOSTIC SYSTEM. If same DTC is not present, go to applicable procedure for other DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no DTCs are set, trouble shooting is complete.
scientia non olet · About LEMON Manuals