If a malfunction occurs in the cruise control system, during cruise control operation, the ECM actuates the automatic cancel control and blinks the cruise MAIN indicator light to inform the driver of a malfunction. At this time, the ECM memorizes the malfunction in the form of 5-digit and 2-digit DTC (Diagnostic Trouble Code).
The 5-digit DTC can be read by connecting a hand-held tester to the DLC3.
The 2-digit DTC is output to the cruise MAIN indicator light when the Tc and CG terminals of the DLC3 connector are connected through the use of the SST (09843-18040). Thus, these DTC can be obtained by counting the number of blinks of the cruise MAIN indicator light.
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