Diagnostic Trouble Codes Check/Clear

1. Using SST, short-circuit between terminals TC and CG of the DLC3.
2. Turn the ignition switch on.
   Fig 1: Identifying DLC3 Connector

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3. Read and record DTCs from the CRUISE main indicator light on the combination meter. As examples, refer to the chart below for the blinking patterns of the normal system code and diagnostic trouble code 21 and 52.
   Fig 2: Identifying Trouble Code Specification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

If the CRUISE main indicator light does not blink because of any DTC or in the normal code blinking pattern, inspect the following circuits.

1. Turn the ignition switch off.
2. If DTCs are indicated, repair the relevant circuits referring to the Diagnostic Trouble Code Chart (see DIAGNOSTIC TROUBLE CODE CHART ).
3. Clear the DTCs according to either one of the following procedures.
   • Disconnect the negative (-) battery cable for at least 10 seconds, then reconnect it.
   • Remove the EFI fuse for at least 10 seconds, then reinstall it.
4. Recheck DTCs (see step (a)).

1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch on.
3. Read DTCs on the tester screen.

1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch on.
3. Clear the DTCs following the prompts on the tester screen.

HINT:

Hand-held tester has a "Snapshot" function which records the monitored data.

Refer to the hand-held tester operator's manual for further details.