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 MANUALSVOLVO2004V70 L5-2.4L VIN 64 B5244S6REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSECM CODES (ENGINE CONTROL MODULE)ECM-E003FAULTY CONFIGURATION3 - CHECKING A SHORT-CIRCUIT IN CAN CABLES
2004 Volvo V70 L5-2.4L VIN 64 B5244S6
3 - Checking A Short-Circuit In CAN Cables
2004 Volvo V70 L5-2.4L VIN 64 B5244S6SECTION 3 - Checking A Short-Circuit In CAN Cables
Checking A Short-circuit In CAN Cables
Connect an ohmmeter between the relevant CAN cable (CAN-L and CAN-H) and the power supply, and between the CAN cable and ground. Twist the connectors and turn the cable harness to different positions at each reading to determine any intermittent short-circuits.
Take The Following Readings:
- The resistance between CAN-L and ground
- The resistance between CAN-L and voltage
- The resistance between CAN-H and ground
- The resistance between CAN-H and voltage.
The resistance must be infinite or very high in all cases (greater than 1 M ohm).
HINT: The reading can be taken from the same connector if the CAN cables, power supply and ground are exposed. If possible, take readings on the rear of the connector to prevent damage to the terminals in the connector. If this is not possible, use the adapter wiring or loose terminal pins to obtain a good contact.
Was a fault detected?
YES: Refer to 4. Identifying Fault Causes In the CAN Network. 4 - Identifying Fault Causes In the CAN Network
NO: Refer to 5. Checking the Traffic Load on the CAN Cables. 5 - Checking the Traffic Load on the CAN Cables
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.