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.
Checking the wiring
Check the signal cable. Check for a short-circuit to ground.
Take readings between:
- Engine Control Module (ECM) terminal #B48 (#B58) and terminal #2 of control module cooling fan.
If no faults are found via the aforementioned fault tracing, replace the control module cooling fan.
Remedy as necessary.
Other information:
- To connect the breakout box, see Connecting the breakout box
- For information about signals:
- For 5 cylinder turbocharged engines -2001, see Signal specification
- For 5 cylinder turbocharged engines 2002, see Signal specification
- For B5254T2 -2004, see Signal description
- For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see SIGNAL SPECIFICATION (B5204T5, B5234T3, B5234T7 AND B5244T3 -2004)
- For B5254T4 2004, see SIGNAL SPECIFICATION (B5254T4 2004)
- For 5 cylinder turbocharged engines 2005-, see Signal specification .
- See Checking wiring and terminals .
- Continue
Refer to Information
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.