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HOMESERVICE MANUALSMAZDA2006B4000 BASE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE SYMPTOM TROUBLESHOOTING - (5 OF 5)SYMPTOM TROUBLESHOOTING CHART - CRUISE CONTROLCRUISE CONTROL SYSTEM PINPOINT TEST 2: SET SPEED FLUCTUATES
2006 Mazda B4000 Base, Automatic

Cruise Control System Pinpoint Test 2: Set Speed Fluctuates

2006 Mazda B4000 Base, AutomaticSECTION Cruise Control System Pinpoint Test 2: Set Speed Fluctuates
CRUISE CONTROL SYSTEM PINPOINT TEST 2: SET SPEED FLUCTUATES

PINPOINT TEST 2 SET SPEED FLUCTUATES
STEP INSPECTION ACTION
1 CHECK SPEED CONTROL CABLE/THROTTLE BODY LINKAGE
  • Key in OFF position.
  • Remove the speed control cable from the speed control servo. Visually inspect the core wire and check the speed control cable by pulling on the cable and noting the throttle movement.
  • Is the speed control cable OK? 
 Yes Go to next step.
No Install a new speed control cable or repair the throttle body linkage. For speed control cable installation, See CRUISE CONTROL ACTUATOR CABLE REMOVAL / INSTALLATION . Test the system for normal operation. See SYMPTOM TROUBLESHOOTING CHART - CRUISE CONTROL  .
2 CHECK THE SPEEDOMETER
  • Check the speedometer for correct operation by driving the vehicle.
  • Does the speedometer fluctuate? 
 Yes Repair the speedometer. See INSTRUMENT CLUSTER .
No Install a new cruise control servo. See CRUISE CONTROL SERVO REMOVAL / INSTALLATION . Test the system for normal operation. See SYMPTOM TROUBLESHOOTING CHART - CRUISE CONTROL  .
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.
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  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.