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 MANUALSSUBARU2022IMPREZA BASE, 4D SEDAN, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 3 (LAN COMMUNICATION SYSTEM (DIAGNOSTICS) (HEV))CAN COMMUNICATION CIRCUIT CHECKLISTP-CAN
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans
CAN Communication Circuit Check: List: P-Can
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION P-Can
WARNING: This page is about a different car, the 2022 Subaru Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.
| Resistance value between CAN Hi and Lo | Contents of inspection | Remarks |
|---|---|---|
| Ground short inspection | Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>GROUND SHORT INSPECTION (P-CAN) . | Shorted to ground in the communication circuit or control module. |
| Check power supply short | Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>POWER SHORT INSPECTION (P-CAN) . | Shorted to battery power supply in the communication circuit or control module. |
| More than 56 Ω and less than 64 Ω | Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>MORE THAN 56 Ω AND LESS THAN 64 Ω (P-CAN) . | Combined resistance of end resistance does not have malfunction; short to ground or +B short of the CAN communication circuit is possible, however. |
| 56 Ω or less | Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>56 Ω OR LESS (P-CAN) . | Resistance is lower than combined resistance of end resistance. Short to CAN Hi and CAN Lo on the CAN communication circuit is possible. |
| 64 Ω or more | Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>64 Ω OR MORE (P-CAN) . | Resistance is higher than combined resistance of end resistance. Open circuit of CAN communication circuit is possible. |
| Related lines, more than 56 Ω and less than 64 Ω (Hybrid vehicle control ECU assembly) | Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>RELATED LINES, MORE THAN 56 Ω AND LESS THAN 64 Ω (P-CAN_HYBRID VEHICLE CONTROL ECU ASSEMBLY . | No hybrid data is received. Perform inspection when faulty is detected. |
| Related lines, more than 56 Ω and less than 64 Ω (EBBCM) | Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>RELATED LINES, MORE THAN 56 Ω AND LESS THAN 64 Ω (P-CAN_EBBCM) . | No EBBCM data is received. Perform inspection when faulty is detected. |
| Related lines, more than 56 Ω and less than 64 Ω (central gateway) | Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>RELATED LINES, MORE THAN 56 Ω AND LESS THAN 64 Ω (P-CAN_CENTRAL GATEWAY) . | No central gateway data is received. Perform inspection when faulty is detected. |
| Related lines, more than 56 Ω and less than 64 Ω (Inverter with converter assembly) | Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>RELATED LINES, MORE THAN 56 Ω AND LESS THAN 64 Ω (P-CAN_INVERTER WITH CONVERTER ASSEMBLY . | No Inverter with converter assembly data is received. Perform inspection when faulty is detected. |
| Related lines, more than 56 Ω and less than 64 Ω (Electric vehicle charger assembly (charge control ECU)) | Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK>INSPECTION>RELATED LINES, MORE THAN 56 Ω AND LESS THAN 64 Ω (P-CAN_ELECTRIC VEHICLE CHARGER ASSEMBLY (CHARGE CONTROL ECU) . | No Electric vehicle charger assembly (charge control ECU) data is received. Perform inspection when faulty is detected. |
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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.