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.
Power Short Inspection (P-Can)
Wiring diagram:
CAN communication system Ref. to WIRING SYSTEM (CROSSTREK MODEL (HEV))>CAN COMMUNICATION SYSTEM>WIRING DIAGRAM .
Main wiring harness or related lines may be shorted to battery circuit, or shorted to battery circuit in one of the control modules.
- CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS
.
- Turn the ignition switch to OFF.
- Turn the ignition switch to ON.
- Using a tester, measure the voltage between the ECM connector and chassis ground.
Connector & terminal
(B134) No. 4 (+) - Chassis ground (-):
(B134) No. 15 (+) - Chassis ground (-):
Is the voltage 5 V or less?
Yes: Currently, it is normal.
No: Go to 2.
- CHECK CONTROL MODULE
.
With the tester connected, disconnect control module.
Connector & terminal
(B134) No. 4 (+) - Chassis ground (-):
(B134) No. 15 (+) - Chassis ground (-):
Did the voltage change to 5 V or less?
Yes: Replace the control module whose voltage has changed.
No: Repair or replace the short circuit of the harness between ECM and BCM.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.