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HOMESERVICE MANUALSMAZDA2006B4000 BASE, AUTOMATICREPAIR AND DIAGNOSISELECTRICALGAUGESTROUBLESHOOTING (INSTRUMENTATION/DRIVER INFORMATION)PINPOINT TEST 15: SPEED CONTROL INDICATOR IS NEVER ONPOSSIBLE CAUSES
2006 Mazda B4000 Base, Automatic

Possible Causes

2006 Mazda B4000 Base, AutomaticSECTION Possible Causes
  • circuit (O/LB) open
  • cruise control servo
  • instrument cluster
    CAUTION:
    • Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
SPEED CONTROL INDICATOR NEVER ON PINPOINT TEST REFERENCE

PINPOINT TEST 15 SPEED CONTROL INDICATOR IS NEVER ON
STEP INSPECTION ACTION
1 CHECK SPEED CONTROL OPERATION
  • Test drive the vehicle and operate the cruise control.
  • Does the cruise control operate correctly? 
 Yes Go to next step.
No See SYMPTOM TROUBLESHOOTING CHART - CRUISE CONTROL to continue diagnosis of the cruise control system.
2 CHECK THE SPEED CONTROL INDICATOR CIRCUIT
  • Key OFF.
  • Disconnect: Speed control servo 0120-101.
    NOTE:
    • If the fuse fails, repair the circuit for a short to voltage.
  • Connect a fused (5A) jumper wire between the cruise control servo 0120-101 pin 1, circuit (O/LB), harness side and ground.
  • Key ON.
  • Does the cruise control indicator Illuminate? 
 Yes Install a new cruise control servo. See CRUISE CONTROL SERVO REMOVAL / INSTALLATION . Test the system for normal operation.
No Go to next step.
3 CHECK CIRCUIT (O/LB) FOR AN OPEN
  • Key OFF.
  • Disconnect: Instrument cluster 0922-102.
  • Measure the resistance between the instrument cluster 0922-102 pin 15, circuit (O/LB), harness side and the cruise control servo 0120-101 pin 1, circuit (O/LB), harness side.
  • Is the resistance less than 5 ohms? 
 Yes Go to next step.
No Repair circuit (O/LB) for an open. Test the system for normal operation.
4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
  • Disconnect all the instrument cluster connectors.
  • Check for:
    • Corrosion
    • pushed-out pins
    • incorrectly installed bulb sockets
    • burnt-out bulbs
  • Connect all the instrument cluster connectors and make sure they seat correctly.
  • Operate the system and verify the concern is still present.
  • Is the concern still present? 
 Yes Install a new instrument cluster. See INSTRUMENT CLUSTER . Test the system for normal operation.
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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.