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Ford Historic Self-Test Routines
6
Select STAR Test Mode from the
Ford
Function List
and press
Follow the instructions on the tool screen
to access DTCs from the PCM. Pressing
begins test.
The TEST/HOLD parameter indicates
the state the STI (Self-Test Input). The
key toggles this state from TEST
to HOLD.
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 appli-
cable 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.
When done, press
to return to the
Ford Function List
.
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)