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 MANUALSMAZDA2009TRIBUTE 4WD L4-2.5LREPAIR AND DIAGNOSISCRUISE CONTROLTESTING AND INSPECTIONPINPOINT TESTSPINPOINT TEST 3: THE SPEED CONTROL SWITCHES DO NOT OPERATE CORRECTLY
2009 Mazda Tribute 4WD L4-2.5L
Pinpoint Test 3: The Speed Control Switches Do Not Operate Correctly
2009 Mazda Tribute 4WD L4-2.5LSECTION Pinpoint Test 3: The Speed Control Switches Do Not Operate Correctly
PINPOINT TEST 3: THE SPEED CONTROL SWITCHES DO NOT OPERATE CORRECTLY
NOTE:Tapping the brake pedal deactivates the speed control. It is necessary to apply the brakes in order to slow the vehicle down.
Normal Operation
Voltage is sent from the PCM to the speed control switches through circuit VES10 (W). When a switch is pressed, the voltage is routed through a specific resistor value for each function. The PCM grounds the reference voltage through circuit RES08 (G/BR). The PCM uses this reference voltage to determine which speed control input function has been selected.
- DTC P0579 (Cruise Control Multifunction Input A Circuit Range/Performance) - sets when the speed control switch circuits are open, shorted to voltage or ground.
- DTC P0581 (Cruise Control Multi-Function Input A Circuit High) - sets when the speed control switch circuits are open or shorted to voltage.
Possible Causes
- Wiring, terminals or connectors
- Clockspring
- Speed control switches
- PCM
Diagnostic Procedure
CAUTION:Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
Step 1-Step 3:
Step 4-Step 6:
Step 7-Step 9:
RENDER: 1.0x
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.