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 CHECKINSPECTION62 Ω OR MORE (MAIN-CAN)

2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans

62 Ω Or More (Main-Can)

2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION 62 Ω Or More (Main-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.

Wiring diagram:

CAN communication system Ref. to WIRING SYSTEM (CROSSTREK MODEL (HEV))>CAN COMMUNICATION SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

Courtesy of SUBARU OF AMERICA, INC.

NOTE:

When the CAN communication circuit is measured, combined resistance of end resistance (120 Ω) in ECM and end resistance (120 Ω) in the central gateway control module can be measured. The combined resistance is more than 52 Ω and less than 62 Ω with the stabilizing circuit included. When the measured resistance value is 62 Ω or more, either one of the end resistances, or stabilizing circuit, or main wiring harness may have malfunction such as open circuit.

CHECK CONTROL MODULE .
1. Disconnect the connectors of the ECM and central gateway control module.
2. Using a tester, measure the resistance between control module terminals.
  Connector & terminal
  
  (B134) No. 3 - (B134) No. 14:
  
  (i366) No. 22 - (i366) No. 7:
Is the resistance 114 - 126 Ω?

Yes: Go to 2.

No: Replace the control module whose value is out of the specification.
CHECK HARNESS (MAIN-CAN) .
1. Disconnect the steering angle sensor connector.
2. Using a tester, measure the resistance between steering angle sensor connector and ECM connector, and between steering angle sensor connector and central gateway control module connector.
  Connector & terminal
  
  (i74) No. 3 - (B134) No. 3:
  
  (i74) No. 2 - (B134) No. 14:
  
  (i74) No. 3 - (i366) No. 22:
  
  (i74) No. 2 - (i366) No. 7:
Is the resistance less than 10 Ω?

Yes: It is possible that temporary poor communication occurs.

No: Repair or replace the open circuit of harness.

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.