Cruise Control: Testing and Inspection

SYSTEM BLOCK DIAGRAM








COMPONENT PARTS AND FUNCTION OUTLINE

COMPONENTS LOCATION








NAME SYMBOL
Actuator A
Clutch switch B
Cruise control module C
Cruise main switch D
Pulley assembly E
Speed control switch (in multi function switch) F
Stop lamp switch G
Vacuum motor H
Vehicle speed sensor I





COMPONENTS

REMOVAL AND INSTALLATION
1. Remove the battery negative terminal.





2. Remove the pulley cover.
3. Disconnect the accelerator cable and pulley assembly connection.
4. Disconnect the cruise control cable and pulley assembly connection.





5. Disconnect the throttle body cable and pulley assembly connection with turning throttle lever to full open position.
6. Disconnect the vacuum pump connector and remove the vacuum pump assembly.
7. Remove the actuator bracket and disconnect vacuum hose.
8. Installation is the reverse order of removal.

PARTS INSPECTION

CRUISE CONTROL MAIN SWITCH
1. Operate the switch, and check for the continuity between the terminals.





2. If continuity is not as specified, replace the switch.

STOP LAMP SWITCH

Stop Lamp Switch:

After operating the stop lamp switch, check for continuity between the terminals.

P/N POSITION SWITCH
1. Disconnect the connector.





2. Check that there is continuity between connector terminals 10 and 11 when the shift lever is moved to the "N" range.

CRUISE VACUUM PUMP (CONTROL VALVE, RELEASE VALVE)
1. Remove the auto-cruise vacuum pump connector.





2. Measure the resistance value between connector terminal 1 and 2. and connector terminals 2 and 4.

Standard value : 50-60 Ohms

3. Check that the solenoid valve makes an operating noise when battery voltage is impressed between terminals 2 and 1, and connector terminals 2 and 4.
4. If there is a malfunction of the solenoid valve. Replace the cruise vacuum pump assembly.

MOTOR
1. Remove the cruise vacuum pump connector.
2. Check that the motor revolves when battery voltage applied between connector terminals 2 and 3.

ACTUATOR
1. Remove the actuator.

Fig. 10 Actuator Inspection:

2. Apply negative pressure to the actuator with the vacuum pump and check that the holder moves more than 35 mm (1.38 in.). In addition, check that there is no change in the position of the holder when negative pressure is maintained in then inspect and adjust the cruise control cable.