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.
Cruise Control, Engine Control, Switches - Symptom Related Diagnostic Procedures (Convertible)
2004 Volvo C70 2.4 63SECTION Cruise Control, Engine Control, Switches - Symptom Related Diagnostic Procedures (Convertible)
- Checking Control Module Communication (B5234T3;B5254T;1998)
- Checking Diagnostic Trouble Codes (DTCS) (B5234T3;B5254T;1998)
- Checking Disconnected Park/Neutral Position (PNP) Function Circuit (B5234T3;B5254T;1998)
- Checking Disconnected Stop (Brake) Light Circuit (B5234T3;B5254T;1998)
- Checking Disconnected Switch, Brake Valve Or Clutch Valve (B5234T3;B5254T;1998)
- Checking Disengagement Cause (B5234T3;B5254T;1998)
- Checking Non-Connected Or Disconnected Power Supply (B5234T3;B5254T;1998)
- Checking On/Off Selector Switch, Brake Valve And Clutch Valve (B5234T3;B5254T;1998)
- Checking Park/Neutral Position (PNP) Switch (B5234T3;B5254T;1998)
- Checking Resume Switch (B5234T3;B5254T;1998)
- Checking Safety Disengagement (B5234T3;B5254T;1998)
- Checking Set- Switch (B5234T3;B5254T;1998)
- Checking Set+ Switch (B5234T3;B5254T;1998)
- Checking The Stop (Brake) Light Switch (B5234T3;B5254T;1998)
- Checking The Vacuum System (B5234T3;B5254T;1998)
- Service Work (B5234T3;B5254T;1998)
- Diagnostic Test Mode (DTM) 2. Cruise control (gasoline engines)
- Diagnostic Test Mode (DTM) 5. Cruise control (gasoline engines)
- Erasing diagnostic trouble codes (DTCs). Cruise control
- Reading off diagnostic trouble codes (DTCs). Cruise control (gasoline engines)
- Conditions
- Test driving
- Reading off diagnostic trouble codes (DTCs)
- Connecting Volvo Scan Tool
- Connecting the Volvo Scan Tool (ST)
- Communication problems
- Checking control module communication
- Checking Volvo Scan Tool (ST) power supply
- Checking Volvo Scan Tool (ST)
- Checking control module ground terminal
- Checking for an open-circuit
- Checking the control module power supply
- Checking fuse
- Checking for a short-circuit
- Checking 15-supply to fuse
- Checking communication cable to data link connector (DLC)
- Checking the communication cable
- Checking control module communication
- Checking for contact resistance and oxidation
- Connection
- Information
- Connection of Volvo Scan Tool (ST)
- Fault-tracing information
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.