Pic. 7.71. Block diagram of a constant speed system
System components and their operation
Pic. 7.72. Location of cruise control components
The location of the components of the constant speed system is shown in fig. 7.72. and 7.73.
Pic. 7.73. Connecting the cables and electrical connectors of the cruise control system: 1 – connection of a cable of an accelerator pedal and the case of a socket in gathering; 2 - connection of the cable of the cruise control drive and the connector of the sector of the electric drive of the cruise control system; 3 – a socket of the electric drive of system of the cruise-control; 4 - sector of the electric drive of the cruise control system; 5 - electric drive of the cruise control system
Withdrawal
Disconnect the battery.
Disconnect the accelerator and ATP control cables from the throttle body.
Disconnect the accelerator cable from the accelerator pedal.
Pic. 7.74. Accelerator cable support clips
Loosen the accelerator cable support clip bolts (pic. 7.74).
Turn away bolts of fastening of an ATP drive, remove a drive.
Installation is carried out in the reverse order.
Checking the main switch SPPS
Pic. 7.75. Scheme for checking the main switch SPPS
Check circuits of the switch according to the table in figure 7.75.
If the test results are negative, replace the switch.
Checking the brake light switch
Pic. 7.76. Brake light switch test circuit
Check switch circuits with switch button pressed and released (pic. 7.76).
Checking work
Checking and adjusting the operation of the system is carried out with the electrical loads turned off.
Warm up the engine until the idle speed stabilizes. Check that the speed is in accordance with the technical standards.
Switch off the ignition.
Make sure there are no sharp kinks in the control cables.
Press the accelerator pedal: the throttle lever should move from lock to lock smoothly, without jerking.
Check cable tension adjustment.
If there is excessive slack or no slack at all, adjust cable tension.
Troubleshooting Guide
With a large slack in the cables when moving uphill, there will be a significant drop in the speed of movement
If there is no cable slack, the idle speed will be higher than normal.
Cable adjustment
Connect the cable to the drive pulley.
Pull the cable sheath until the slack in the cable is selected. screw the nut «b» until it touches the bracket.
Pic. 7.77. Accelerator cable adjustment diagram
Loosen the nut «b» for one turn (pic. 7.77).
Tighten locknut «A».
As a result of the actions taken, the deflection of the cable between the roller and the bracket should be approximately 1 mm (drive roller stops).