With Scan Tool
DIAGNOSIS SYSTEM
A. Check the indicator.
1. Turn the ignition switch ON.
2. Check that the CRUISE MAIN indicator light comes ON when the cruise control main switch is turned ON, and that the indicator light goes OFF when the main switch is turned OFF.
HINT: If the indicator check result is not normal, proceed to troubleshooting the combination meter.
B. Check the DTC.
HINT: If a malfunction occurs in the No. 1 vehicle speed sensor or actuator, etc. during cruise control driving, the ECU actuate AUTO CANCEL of the cruise control and turns ON and OFF the CRUISE MAIN indicator light to inform the driver of a malfunction. At the same time, the malfunction is stored in memory as a DTC.
USING TOYOTA HAND-HELD TESTER
1. Hook up the TOYOTA hand-held tester to the DLC 2.
2. Monitor the ECU data by following the prompts on the tester screen.
HINT: TOYOTA hand-held tester has a "Snapshot" function which records the monitored data.
Please see the TOYOTA hand-held tester operator's manual for further details.