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.
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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 600 (SYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM L3 WITH TC))ENGINE CONTROL SYSTEM OPERATION INSPECTIONELECTRONIC THROTTLE CONTROL SYSTEM INSPECTIONTHROTTLE POSITION (TP) SWEEP INSPECTION
2008 Mazda 6 s Sport, 4D Hatchback, Standard
Throttle position (TP) sweep inspection
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Throttle position (TP) sweep inspection
WARNING: This page is about a different car, the 2007 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the M-MDS to the DLC-2.
- Reform the KOER self-test function.
(See KOEO/KOER SELF TEST ).
- Verify that none of the following DTCs are displayed:
- P0122, P0123, P0222, P0223, P2100, P2101, P2102, P2103, P2107, P2108, P2119, P2122, P2123, P2127, P2128, P2135, P2138
- If any one DTC is displayed, perform the DTC inspection.
- P0122, P0123, P0222, P0223, P2100, P2101, P2102, P2103, P2107, P2108, P2119, P2122, P2123, P2127, P2128, P2135, P2138
- Access the TP_REL PID.
- Verify that the PID reading is within the CTP value. (See
PCM INSPECTION
).
- If the PID reading is out of range, perform the following:
- Remove the air duct from the throttle valve body.
- Verify that the throttle valve opens when the accelerator pedal is depressed.
- If the throttle valve opens, inspect the throttle position sensor and the related wiring harness.
- If the throttle valve does not open, inspect the throttle actuator control motor and the related wiring harness.
- If the PID reading is out of range, perform the following:
- Gradually depress the throttle pedal and verify that the PID reading increases lineally.
- If the PID reading drops momentarily, inspect the following:
- Throttle position sensor
- If the PID reading drops momentarily, inspect the following:
- Fully depress the throttle pedal and verify that the PID reading is within the WOT value. (See
PCM INSPECTION
).
- If the PID reading is out of range, perform the following:
- Remove the air duct from throttle valve body with connector connected.
- Verify that the throttle valve opens when throttle pedal is depressed.
- If the throttle valve opens, inspect the throttle position sensor and the related wiring harness.
- If the throttle valve does not open, inspect the throttle actuator control motor and the related wiring harness.
- If the PID reading is out of range, perform the following:
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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.