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Cruise Control System Pinpoint Test 3: Cruise Control Does Not Disengage When The Brakes Are Applied

CRUISE CONTROL DOES NOT DISENGAGE WHEN BRAKES ARE APPLIED - PINPOINT TEST REFERENCE

PINPOINT TEST 3 THE CRUISE CONTROL DOES NOT DISENGAGE WHEN THE BRAKES ARE APPLIED
STEP INSPECTION ACTION
1 CHECK THE CRUISE CONTROL CABLE/ACCELERATOR CABLE
  • Key in OFF position.
    NOTE:
    • Make sure the floor mat, insulation, wiring harness location, and other items do not interfere with the accelerator pedal and linkage.
  • Visually inspect the cruise control cable connections, the throttle body linkage, and the cruise control servo pulley cover.
  • Are the cruise control cable connections, the throttle body linkage, and the cruise control servo pulley cover OK? 
 Yes Go to next step.
No Install new or adjust components as necessary. Test the system for normal operation
2 CHECK THE STOPLAMP OPERATION
  • Check the stoplamps for correct operation by applying and releasing the brake pedal and observing the stoplamps.
  • Do the stoplamps operate correctly? 
 Yes Go to next step.
No See SYMPTOM TROUBLESHOOTING CHART - STOPLAMPS to diagnose the stoplamps.
3 CHECK THE CRUISE CONTROL DEACTIVATOR CIRCUIT
  • Key ON engine OFF (KOEO).
  • Measure the voltage between the cruise control servo connector 0120-101 circuit V/O, harness side and ground while firmly pressing the brake pedal.
  • Is any voltage present? 
 Yes Go to next step.
No Install a new cruise control servo. See CRUISE CONTROL SERVO REMOVAL / INSTALLATION .
4 CHECK CIRCUIT V/O FOR A SHORT TO VOLTAGE
  • Key in OFF position.
  • Disconnect: brake pressure switch (BPS) 0120-04. Key ON engine OFF (KOEO).
  • Measure the voltage between the cruise control servo connector 0120-101 circuit V/O harness side and ground.
  • Is any voltage present? 
 Yes Repair the V/O circuit. Test the system for normal operation.
No Install a new BPP. See CRUISE CONTROL DEACTIVATOR SWITCH REMOVAL / INSTALLATION
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