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Cruise Control System Pinpoint Test 2: Set Speed Fluctuates

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 DIAGNOSIS .
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  .
G03728040Courtesy of MAZDA MOTORS CORP.
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