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.
Component Function Check
- CHECK HIGH PRESSURE FUEL PUMP FUNCTION
WITH CONSULT
- Start engine.
- Check "FUEL PRES SEN V" in "DATA MONITOR" mode with CONSULT.
Monitor Item Condition Values/Status FUEL PRES SEN V Engine speed: Idle 820 - 1, 220 mV Engine speed: Revving engine from idle to 4, 000 rpm quickly 820 - 3, 060 mV
WITHOUT CONSULT
- Start engine.
- Check the voltage between ECM harness connector and ground.
ECM Condition Voltage + - Connector Terminal Connector Terminal F111 105 M160 175 [Engine is running] - Warm-up condition
- Idle speed
NOTE: The pulse cycle changes depending on rpm at idleBATTERY VOLTAGE (11 - 14 V)* [Engine is running] - Warm-up condition
- Engine speed: 2, 000 rpm
BATTERY VOLTAGE (11 - 14 V)* Is the inspection result normal?
YES: INSPECTION END
NO: Proceed to "DIAGNOSIS PROCEDURE ".
Use the Manual With the Right Hardware
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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.
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