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.
Scan Tool Data List
The scan tool data lists contain all of the cruise control related parameters that are available on the scan tool. The parameters in the list are arranged in alphabetical order. The data list column indicates the location of the parameter within the scan tool menu selections.
Use the scan tool data lists as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all of the diagnostic procedures with in Vehicle DTC Information.
Use the scan tool data lists only after the following is determined:
- There is no published DTC procedure nor published symptom procedure for the customer concern.
- The DTC or symptom procedure indicated by the diagnostic system check does not resolve the customer concern.
The typical data values are obtained from a properly operating vehicle under the conditions specified in the first row of the scan tool data list table. Comparison of the parameter values from the suspect vehicle with the typical data values may reveal the source of the customer concern.
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Operating Conditions: The ignition ON/The engine is ON/The transmission is in Park or Neutral/The cruise control On/Off switch is OFF | |||
| Cruise Control Active | ECM Data | No/Yes | No |
| Cruise Disengage 1-8 History | ECM Data | The last reason for cruise control disengagement | Varies |
| Cruise Inhibit Reason | ECM Data | Reason why the Cruise Control System is inhibited | Varies |
| Cruise On/Off Switch | ECM Data | On/Off | Off |
| Cruise Resume/Accel Switch | ECM Data | On/Off | Off |
| Cruise Set/Coast Switch | ECM Data | On/Off | Off |
| Engine Speed | ECM Data | RPM | Varies |
| Stop Lamp Pedal Switch | ECM Data | Applied/Released | Released |
| TCC Brake Pedal Switch | ECM Data | Applied/Released | Released |
| Traction Control Status | ECM Data | Active/Inactive | Inactive |
| Vehicle Speed Sensor | ECM Data | km/h (mph) | 0 km/h (0 mph) |
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Operating Conditions: The ignition ON/The engine is ON/The transmission is in Park or Neutral/The cruise control On/Off switch is OFF | |||
| Cruise Control Active | PCM Data | No/Yes | No |
| Cruise On/Off Switch | PCM Data | On/Off | Off |
| Cruise Resume/Accel. Switch | PCM Data | On/Off | Off |
| Cruise Set/Coast Switch | PCM Data | On/Off | Off |
| Engine Speed | PCM Data | RPM | Varies |
| Ignition 1 Signal | PCM Data | Volts | Varies |
| Initial Brake Apply Signal | PCM Data | Applied/Released | Released |
| Stop Lamp Pedal Switch | PCM Data | Applied/Released | Released |
| Stop Lamp Pedal Switch Signal | PCM Data | Volts | Varies |
| TAC Stop Lamp Pedal Switch | PCM Data | Applied/Released | Released |
| Traction Control Status | PCM Data | Active/Inactive | Inactive |
| Vehicle Speed Sensor | PCM Data | km/h (mph) | 0 km/h (0 mph) |
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Operating Conditions: The ignition ON/The engine is ON/The transmission is in Park or Neutral/The cruise control On/Off switch is OFF | |||
| Reduced Engine Power | TAC Data | Active/Inactive | Inactive |
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Operating Conditions: The ignition ON/The engine is ON/The transmission is in Park or Neutral/The cruise control On/Off switch is OFF | |||
| Reduced Engine Power | TAC Data | Active/Inactive | Inactive |
| TAC/PCM Communication Signal | TAC Data | Ok/Fault | Ok |
| TAC Vehicle Speed Signal | TAC Data | Ok/Fault | Ok |
| Vehicle Speed Circuit History | Output Driver Data | Ok/Open/Short/Invalid State | Ok |
| Vehicle Speed Circuit Status | Output Driver Data | Ok/Fault/Invalid State | Ok |
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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.