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 MANUALSVOLVO2003V70 2.4 L5-2.4L VIN 61 B5244SREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSECM CODES (ENGINE CONTROL MODULE)ECM-4310SIGNAL TOO HIGH
2003 Volvo V70 2.4 L5-2.4L VIN 61 B5244S
Signal Too High
2003 Volvo V70 2.4 L5-2.4L VIN 61 B5244SSECTION Signal Too High
Signal too high
Checking components and connections
Check the signal cable from engine control module (ECM) terminal #B7 (#B17) to leak diagnostic pump terminal #1. Check for a short-circuit to supply voltage.
Check the signal cable from engine control module (ECM) terminal #B40 (#B50) to leak diagnostic pump terminal #3. Check for a short-circuit to the 12V supply voltage.
Remedy as necessary.
Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- For information about signals, see Signal specification Signal Description / Specification
- To access or replace the leak diagnostic pump, see Leak diagnostic pump, replacing Service and Repair
- To fault-trace the wiring and terminals, see Checking wiring and terminals Checking Wiring And Terminals.
Continue - Verification
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Verification
Information
Fault-tracing information
In case of this defect, troubleshooting is not followed by verification.
The information can be displayed again or the fault-tracing for this fault can be interrupted.
Do you want to view the information again?
Yes - Attempt New Test
No - Fault Found
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Attempt New Test - Checking components and connections
FAULT FOUND - Fault Found
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - FAULT-TRACING FAILED
No - Attempt New Test
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FAULT-TRACING FAILED - FAULT-TRACING FAILED
Attempt New Test - Checking components and connections
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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.