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.
Cycle Outputs
A scan tool may be used in order to command the EHPS pump speed enable message ON or OFF. This can be very helpful in determining if a certain portion of a circuit or a component is in working order. The following tests are available under the Special Functions selection. The following can be commanded ON or OFF:
- EHPS pump speed
- BPP sensor minimum position learn
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Park brake set with the ignition switch ON/Ignition Switch in RUN/Automatic Transmission in PARK/Air Conditioning is OFF | |||
| Brake Pedal Travel | Data | mm | -50 to 200 mm |
| BPP Sensor Rate | Data | ms | 0 to +10%/25 ms |
| BPP Sensor Input Volts | Data | Volts | 0 to 5 Volts |
| BPP Sensor Output Volts | Data | Volts | 0 to 5 Volts |
| EHPS 42 V Bus Voltage | Data | Volts | 0 to 76 Volts |
| EHPS Ignition 0 | Data | OFF/ON | ON |
| EHPS Ignition 1 | Data | OFF/ON | ON |
| EHPS Demand | Data | % | -100 to +100% |
| EHPS Demand Speed | Data | RPM | 0 to +7500 RPM |
| EHPS ECU Temperature | Data | °C | -180 to +180°C (-238 to +302°F) |
| EHPS Manifold Temperature | Data | °C | -180 to +180°C (-238 to +302°F) |
| EHPS Motor Current | Data | A | 0 to +200 A |
| EHPS Motor RPM | Data | RPM | 0 to +7500 RPM |
| Steering Wheel Rate | Data | °/s | 0 to 2048°/s |
| Steering Wheel Sensor Phase A Volts | Data | Low/High | Low |
| Steering Wheel Sensor Phase B Volts | Data | Low/High | High |
| Vehicle Speed | Data | km/h | 0 |
NO RELATED
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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.