User Manual

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5
With the STI in the TEST state, the self-test begins. The STO (Self-Test Output)
parameter flashes either a HIGH or LOW. A beep will accompany each LOW flash.
Write down the 2– digit or 3 – digit code for reference.
✓ Disregard the blink which may occur when ignition key is turned ON.
Depending on the vehicle being tested, determines if a three digit or two digit code
used. If required, refer to the vehicle service manual for applicable code structure.
❒ A digit consists of consecutive LOW flashes or beep — count the
number of LOWs for the digit
❒ A short HIGH (short pause) occurs between digits.
❒ A long HIGH (long pause) occurs between codes.
❒ There is no flash for the digit 0 (zero).
After all codes are sent, the series will repeat once and then stop. An example is
shown below.
If necessary, refer to an appropriate vehicle service manual for procedure on how
to use STAR Test Mode for specific vehicle under test.
A Three-Digit DTC (214) will Flash as follows:
STO: LOW-LOW =2XX (Hundreds Place =2)
STO: HIGH Short Pause
STO: LOW =21X (Tens Place =1)
STO: HIGH Short Pause
STO: LOW-LOW-LOW-LOW =214 (Ones Place =4)
Two-Digit DTCs (12, 42) will Flash as follows:
STO: LOW =1X (Tens Place =1)
STO: HIGH Short Pause
STO: LOW-LOW =12 (One’s Place =2)
STO: HIGH Long Pause (Between DTCs)
STO: LOW-LOW-LOW-LOW =4X (Tens Place =4)
STO: HIGH Short Pause
STO: LOW-LOW =42 (Ones Place =2)