Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMAZDA2008TRIBUTE S SPORT, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 198 (SYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM AJ])ENGINE CONTROL SYSTEM OPERATION INSPECTIONEVAPORATIVE SYSTEM TESTEVAPORATIVE SYSTEM TEST DESCRIPTION
2008 Mazda Tribute s Sport, 4WD
Evaporative system test description
2008 Mazda Tribute s Sport, 4WDSECTION Evaporative system test description
WARNING: This page is about a different car, the 2004 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
- The evaporative system test finds gas leaks in the system using the PCM to monitor changes in the EVAP system leak detection pump air pump load current. This test starts after sending an on-demand test signal from the WDS to the PCM. The PCM controls the Air pump and Change over valve (COV) operation and also stores the load current of the air pump as follows.
- The PCM commands turn the air pump up and retrieve the air pump load current value (LDP_MON PID) as a reference current (LDP_REF PID).
- After retrieving a reference current value, the PCM commands the Change over valve (COV) to open, then captures the air pump load current value (LDP_MON PID) as idle current (LDP_IDL PID). The evaporative system will be pressurized from the phase.
- The PCM continues to monitor the air pump load current value (LDP_MON PID) until the end of the test.
- You can confirm whether any evaporative gas leak occurred or not by reading the test results.
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.
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.