P0567 Cruise Control "RESUME" Signal Malfunction

The P0567 trouble code indicates that the vehicle’s cruise control system has detected a malfunction in the RESUME signal circuit. The RESUME function is used to command the cruise control system to return to a previously stored cruising speed after the system has been cancelled, provided the vehicle conditions still allow cruise control operation.

This code does not necessarily mean that the RESUME button itself is defective. The problem can occur anywhere between the steering-wheel cruise-control switch and the module responsible for interpreting the command.

The exact circuit design varies considerably between vehicles. Some systems use separate electrical circuits for each cruise-control function, while others use a shared resistor network, steering-wheel control module, or CAN communication.

What Does the RESUME Function Do?

When cruise control is operating and the driver presses the CANCEL button or temporarily disables cruise control without switching the system completely off, the previously selected speed may remain stored.

Pressing RESUME tells the cruise-control system to use that stored speed again.

For example, suppose the vehicle is cruising at 100 km/h and the driver presses CANCEL because of traffic. If the system retains the stored speed, pressing RESUME may command the vehicle to accelerate back toward 100 km/h.

The RESUME button therefore does not directly control the throttle or transmission. It is primarily an input command to the cruise-control system.

A P0567 occurs when the control module does not see the expected electrical or electronic behavior from this RESUME command.

How the RESUME Signal Reaches the Control Module

The physical implementation depends on the vehicle.

In a relatively simple system, the RESUME switch may be connected directly to the cruise-control or engine control module.

In another design, several cruise-control buttons can share one signal wire through different resistor values. The module measures the voltage and determines which button was pressed according to the resulting voltage level.

For example:

• One voltage range may represent SET.

• Another may represent RESUME.

• Another may represent CANCEL.

• Another may represent COAST.

Modern vehicles may use a steering-wheel control module instead. In this arrangement, pressing RESUME may first be detected by the steering-wheel electronics, after which the command is transmitted to another module over the vehicle communication network.

This distinction is important because P0567 does not always mean there is a simple wire running directly from the RESUME button to the ECU.

What Does P0567 Actually Mean?

The word "Malfunction" is important.

P0567 is not the same as saying:

"RESUME button is broken."

It means that the module has detected behavior from the RESUME input that does not match the expected operating conditions.

Depending on the vehicle, the problem could be:

• RESUME switch failure

• Incorrect switch resistance

• Open circuit

• Short circuit

• Damaged wiring

• Loose or corroded connector

• Damaged steering-wheel clock spring

• Faulty steering-wheel control module

• Incorrect reference voltage

• Poor ground

• Communication problem

• Internal module fault

The diagnostic strategy should therefore determine where the RESUME command is being lost or distorted.

Symptoms of P0567

The most obvious symptom is that the RESUME function does not work correctly.

A driver may experience:

• Cruise control will not resume the previously stored speed.

• Cruise control works with SET but not RESUME.

• Pressing RESUME produces no response.

• Cruise control becomes unavailable.

• Cruise control operates intermittently.

• The cruise-control warning light may appear.

• The check engine light may illuminate on some vehicles.

• Several steering-wheel buttons may stop working together.

• Other cruise-control functions may also become unreliable.

An important diagnostic clue is whether SET, CANCEL, COAST, and other cruise functions continue to work normally.

If every cruise-control function works except RESUME, the fault becomes much more localized.

If SET Works but RESUME Does Not

This is one of the most useful observations when diagnosing P0567.

Suppose the driver can:

• Turn cruise control on.

• Set a speed.

• Increase or decrease the set speed.

• Cancel cruise control.

But pressing RESUME does nothing.

In that situation, a problem specifically affecting the RESUME input becomes more likely.

Depending on the system architecture, the technician should investigate the RESUME switch, its resistor value, the corresponding input voltage, the steering-wheel module, clock spring, or communication path.

There is usually no reason to immediately replace the entire cruise-control system.

RESUME Button Failure

The simplest possibility is a defective RESUME switch.

A switch can develop:

• Internal contact resistance

• Intermittent contact

• Open circuit

• Contamination

• Mechanical damage

• Incorrect resistance value

However, a button that feels normal mechanically can still produce an electrically incorrect signal.

For resistor-based multifunction switches, the important question is not simply whether the button has continuity. The resistance or resulting voltage must fall within the range expected by the control module.

Wiring Problems

A broken or damaged wire can produce P0567 even when the RESUME button itself is perfectly functional.

Possible wiring problems include:

• Open circuit

• Short to ground

• Short to battery voltage

• High resistance

• Damaged insulation

• Poor terminal contact

• Corrosion inside a connector

Intermittent wiring faults can be particularly difficult because the RESUME function may work normally while the steering wheel is in one position and fail after the wheel is moved.

Clock Spring Problems

The steering-wheel clock spring deserves special attention on vehicles where the cruise-control buttons are mounted on the steering wheel.

The clock spring provides the electrical connection between the stationary steering column and the rotating steering wheel.

If one of its internal circuits becomes damaged, some steering-wheel functions may stop working while others continue to operate.

For example, the horn may still work while a cruise-control switch circuit is open.

If P0567 appeared together with other steering-wheel control problems, the clock spring and its connectors should be inspected carefully.

Resistor-Based Cruise Control Switches

Some cruise-control systems use a shared input circuit rather than a separate wire for every button.

In such systems, different buttons produce different resistance values.

The control module measures the resulting voltage and identifies the command.

This means that a problem with the common circuit can potentially affect several buttons.

It also means that measuring only the button for continuity may not provide enough information.

A technician should use the manufacturer's wiring diagram and compare the measured resistance or voltage with the specified values.

Steering-Wheel Control Module Problems

On newer vehicles, the RESUME button may be monitored by a steering-wheel or steering-column electronic module.

The module may then transmit the command to the appropriate control unit.

In this architecture, P0567 could result from:

• A defective steering-wheel module

• Incorrect module input

• Power or ground problems

• Communication failure

• Configuration problems

• Internal electronic failure

If other steering-wheel buttons are also malfunctioning, checking the module and communication network becomes more important.

CAN Communication Can Also Be Relevant

Modern cruise-control systems may exchange commands over the vehicle's communication network.

For example, the RESUME command may be detected by one module and transmitted to the ECU or another cruise-control controller.

If communication between these modules is interrupted, the ECU may not receive the expected RESUME command.

Therefore, when diagnosing P0567 on a modern vehicle, it is useful to perform a complete vehicle scan, rather than reading only the engine ECU.

A communication-related fault code stored in another module can sometimes provide the missing clue.

Diagnosing P0567 Correctly

A good diagnostic process begins with determining whether the problem is isolated to RESUME or affects the entire cruise-control input system.

1. Scan all available control modules

Do not limit the diagnosis to the engine ECU if the vehicle uses multiple modules.

Look for:

• Additional cruise-control codes

• Steering-wheel module codes

• Communication codes

• Brake-switch codes

• Power supply codes

A second code can completely change the diagnostic direction.

2. Check cruise-control live data

If the scan tool provides cruise-control switch status, observe the data while pressing the RESUME button.

For example, the data may change from:

RESUME OFF → RESUME ON

when the button is pressed.

If the physical button is pressed but the scan tool never sees RESUME ON, the fault is likely somewhere in the input path before the module recognizes the command.

If the scan tool correctly sees RESUME ON but the cruise control does not respond, the problem may lie further downstream in the cruise-control logic or in another required condition.

3. Test the switch

Depending on the design, test:

• Continuity

• Resistance

• Reference voltage

• Signal voltage

Do not use a generic resistance value as a specification. The correct value depends on the vehicle's circuit design.

4. Inspect the clock spring

If the switch is mounted on the steering wheel, inspect the clock spring and related connectors when the symptoms indicate a rotating-wheel electrical problem.

5. Check wiring under load

A wire can show continuity with a multimeter but still have excessive resistance when the circuit is operating.

Where appropriate, perform voltage-drop testing and gently manipulate the harness while monitoring the signal.

6. Check power and ground

A control module or steering-wheel module with an unstable power or ground supply can generate confusing input-related faults.

7. Check communication

If the vehicle uses a networked steering-wheel control system, verify communication between the relevant modules.

Can a Brake Switch Cause P0567?

A brake-switch problem does not normally mean that the RESUME circuit itself is defective.

However, the brake switch is an important part of cruise-control operation.

The system generally will not resume cruise control if it believes the brake pedal is being pressed.

Therefore, if P0567 is accompanied by brake-switch codes such as P0571, P0572, or P0573, the brake input should be investigated as part of the overall diagnosis.

This is especially important when the RESUME button appears to work correctly in live data but the cruise-control system refuses to activate.

Can P0567 Disable the Entire Cruise Control System?

Yes, depending on the vehicle's strategy.

Some systems treat an unreliable cruise-control input as a safety-related fault and disable cruise control completely.

Other vehicles may allow some functions to continue operating while the RESUME function is unavailable.

Therefore, the presence or absence of cruise-control operation cannot by itself identify the failed component.

P0567 vs. Other Cruise-Control Input Codes

P0567 specifically concerns the RESUME signal.

Other cruise-control codes may refer to different commands or circuits, such as:

• P0568 – Cruise Control "SET" Signal Malfunction

• P0569 – Cruise Control "COAST" Signal Malfunction

• P0570 – Cruise Control "CANCEL" Signal Malfunction

• P0575 – Cruise Control Input Circuit Malfunction

• P0577 – Cruise Control Input Circuit High

• P0578 – Cruise Control Multi-Function Input "A" Circuit Stuck

• P0580 – Cruise Control Multi-Function Input "A" Circuit Low

The exact definitions can vary slightly by manufacturer, but the diagnostic principle remains the same: determine which input the control module considers invalid and then trace that signal through the actual vehicle architecture.

Is P0567 a Serious Problem?

P0567 is generally not an indication of an immediate engine or transmission failure.

The primary concern is the loss or incorrect operation of cruise control.

However, cruise-control systems are safety-related driver-assistance systems. If the system detects an abnormal control input, it may disable cruise control intentionally rather than risk responding incorrectly to a driver command.

The vehicle can often still be driven normally, but the cruise-control system may remain unavailable until the fault is corrected.

Should You Replace the RESUME Button?

Not automatically.

This is one of the most common mistakes with input-circuit fault codes.

A P0567 code tells you that the control module has detected a problem with the RESUME signal. It does not identify the failed component with certainty.

Replacing the switch without checking the signal can waste time if the actual problem is:

• A broken clock-spring circuit

• A connector terminal

• A damaged wire

• A reference-voltage problem

• A steering-wheel module

• A communication fault

The best approach is to verify what the module sees when the RESUME button is pressed.

Final Diagnostic Summary

P0567 – Cruise Control "RESUME" Signal Malfunction indicates that the vehicle has detected an abnormality in the RESUME command used by the cruise-control system.

The fault may be inside the RESUME switch, but it can also originate in the resistor network, wiring, connectors, clock spring, steering-wheel module, communication network, or control module.

The most valuable diagnostic question is:

Does the control module recognize the RESUME command when the button is pressed?

If the button is physically operated but the live-data status never changes, concentrate on the switch and the signal path leading to the module.

If the module correctly recognizes RESUME but cruise control still refuses to resume, investigate the conditions and modules that determine whether a RESUME command is allowed to operate.

This approach is much more reliable than replacing the RESUME switch simply because P0567 is stored.