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.
Hybrid Powertrain Control Module (HPCM)
2014 Subaru Impreza Sport LimitedSECTION Hybrid Powertrain Control Module (HPCM)
WARNING: This page is about a different car, the 2014 Subaru XV Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.
| Terminal No. (terminal symbol) | Item | Measuring condition | Measurement value | Note |
|---|---|---|---|---|
| (B605) No. 1 | Linear solenoid output | - | Cannot be measured | - |
| (B605) No. 2 | Main power supply 1 | Always | 11 - 15 V | - |
| (B605) No. 3 | Main power supply 2 | Always | 11 - 15 V | - |
| (B605) No. 4 | LIN communication | - | Cannot be measured | LIN communication line |
| (B605) No. 5 | GND1 | Always | 0 V | - |
| (B605) No. 6 | GND2 | Always | 0 V | - |
| (B605) No. 7 | (Not used) | - | - | - |
| (B605) No. 8 | (Not used) | - | - | - |
| (B605) No. 9 | (Not used) | - | - | - |
| (B605) No. 10 | HEV CAN H | - | Cannot be measured | CAN communication line |
| (B605) No. 11 | HEV CAN L | - | Cannot be measured | CAN communication line |
| (B605) No. 12 | MAIN CAN H | - | Cannot be measured | CAN communication line |
| (B605) No. 13 | MAIN CAN L | - | Cannot be measured | CAN communication line |
| (B605) No. 14 | PU CAN H | - | Cannot be measured | CAN communication line |
| (B605) No. 15 | PU CAN L | - | Cannot be measured | CAN communication line |
| (B605) No. 16 | (Not used) | - | - | - |
| (B605) No. 17 | (Not used) | - | - | - |
| (B605) No. 18 | Oil pressure SW input | Engine running | 11 - 15 V | - |
| When ignition switch is ON | 0 V | - | ||
| (B605) No. 19 | (Not used) | - | - | - |
| (B605) No. 20 | (Not used) | - | - | - |
| (B605) No. 21 | IG SW input | Ignition switch ON | 11 - 15 V | - |
| (B605) No. 22 | Starter drive request signal | Model without push button start at cranking | 8 - 14 V | - |
| Model with push button start at cranking | Waveform | - | ||
| (B605) No. 23 | P range SW input | P range | Less than 1 V | - |
| Except for P range | 8 V or more | - | ||
| (B605) No. 24 | R range SW input | R range | Less than 1 V | - |
| Except for R range | 8 V or more | - | ||
| (B605) No. 25 | N range SW input | N range | Less than 1 V | - |
| Except for N range | 8 V or more | - | ||
| (B605) No. 26 | D range SW input | D range | Less than 1 V | - |
| Except for D range | 8 V or more | - | ||
| (B606) No. 1 | GND1 for sensors | Always | 0 V | - |
| (B606) No. 2 | GND2 for sensors | Always | 0 V | - |
| (B606) No. 3 | Brake booster pressure sensor input 1 | Always | 0.5 - 4.5 V | - |
| (B606) No. 4 | Brake booster pressure sensor input 2 | Always | 0.5 - 4.5 V | - |
| (B606) No. 5 | (Not used) | - | - | - |
| (B606) No. 6 | (Not used) | - | - | |
| (B606) No. 7 | Sensor power supply output 1 | When ignition switch is ON | 4.5 V or more | - |
| (B606) No. 8 | (Not used) | - | - | - |
| (B606) No. 9 | Sensor power supply output 3 | When ignition switch is ON | 4.5 V or more | - |
| (B606) No. 10 | (Not used) | - | - | - |
| (B606) No. 11 | Brake stroke sensor input 1 | When brake pedal is depressed | Approx. 1 V or more | - |
| When brake is not depressed | Approx. 1 V | - | ||
| (B606) No. 12 | (Not used) | - | - | - |
| (B606) No. 13 | (Not used) | - | - | - |
| (B606) No. 14 | ISG CRK output | When ignition switch is ON | Less than 1 V | - |
| (B606) No. 15 | ISG INH output | When ignition switch is ON | Less than 2 V | - |
| (B606) No. 16 | Brake vacuum pump relay output | When brake vacuum pump operates | 9 V or more | - |
| When brake vacuum pump not activated | 0 V | - | ||
| (B606) No. 17 | Sensor power supply output 2 | When ignition switch is ON | 4.5 V or more | - |
| (B606) No. 18 | Battery voltage 2 monitor input | Always | 11 - 15 V | - |
| (B606) No. 19 | Vacuum pump relay monitor input | When brake vacuum pump operates | 9 V or more | - |
| When brake vacuum pump not activated | 0 V | - | ||
| (B606) No. 20 | Brake stroke sensor input 2 | When brake pedal is depressed | Approx. 4 V or less | - |
| When brake is not depressed | Approx. 4 V | - | ||
| (B606) No. 21 | (Not used) | - | - | - |
| (B606) No. 22 | Battery relay CLOSE output | - | - | - |
| (B606) No. 23 | Battery relay OPEN output | - | - | - |
| (B606) No. 24 | GND3 for sensors | Always | 0 V | - |
RENDER: 1.0x
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.