Initial Inspection and Diagnostic Overview

AUTO-CRUISE CONTROL SYSTEM OPERATION CHECK

AUTO-CRUISE CONTROL SETTING
1. Switch ON the main switch.
2. Drive at the desired speed within the range of approximately 40-200 kph (25-124 mph).
3. Switch ON the SET switch.
4. Check to be sure that when the switch is released the speed is the desired constant speed.

NOTE: If the vehicles speed decreases to approximately 15 kph (9 mph) below the set speed because of climbing a hill for example, the auto-cruise control will be cancelled.




SPEED-INCREASE SETTING
1. Set to the desired speed.
2. Switch ON the RESUME switch.
3. Check to be sure that acceleration continues while the switch is hold, and that when it is released the constant speed at the time when it was released becomes the driving speed.




SPEED REDUCTION SETTING
1. Set to the desired speed.
2. Switch ON the SET switch.
3. Check to be sure that deceleration continues while the switch is pressed, and that when it is released the constant speed at the time when it was released becomes the driving speed.

NOTE: When the vehicle speed reaches the low limit [approximately 40 kph (25 mph)] during deceleration, the auto-cruise control will be cancelled.

RETURN TO THE SET SPEED BEFORE CANCELLATION AND AUTO-CRUISE CONTROL CANCELLATION




1. Set the auto-cruise speed control.
2. When any of the following operations are performed while at constant speed during auto-cruise control, check if normal driving is resumed and deceleration occurs.
1. Switch ON the CANCEL switch.
2. The brake pedal is depressed.
3. The selector lever is moved to the "N" range.




3. At a vehicle speed of 40 kph (25 mph) or higher, check if when the RESUME switch is switched ON, vehicle speed returns to the speed before auto-cruise control driving was cancelled, and constant speed driving occurs.
4. When the main switch is turned to OFF while driving at constant speed, check if normal driving is resumed and deceleration occurs.

AUTO-CRUISE VACUUM PUMP




1. Disconnect the vacuum hose from the electric vacuum pump and connect a vacuum gauge to the vacuum pump.
2. Disconnect the electric vacuum pump connector.




3. Connect terminal (1) to the battery (+) terminal, and connect terminals (2) and (3) to the battery (-) terminal.
4. Check to be sure that the vacuum gauge shows a reading of 53 kPa (398 mmHg, 15.7 in.Hg) or more when terminal (4) is connected to the battery (-) terminal.




5. In this condition, check to be sure that the vacuum gauge shows a 20 kPa (150 mmHg, 6 in.Hg) or less when terminals (2) and (3) are disconnected from the battery.