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The meaning of symbols in the figure is as follows:
Code
Symbol Description Duration
T1
The symbol for diagnosis start. The warning lamp starts flashing
3.0s
T2
For differentiation of the duration of various trouble codes during
the display of multi trouble codes
3.0s
T3
Flashing interval of warning lamp at the presence of trouble code 0.5s
T4
For differentiation of the interval of various digits of trouble code
during the display of certain trouble code (for this interval, the
first digit is for tens digit and the second digit is for ones digit)
1.5s
Take the process shown in above figure for instance. Within the display span of the first trouble code,
before the presence of T4 (namely, 1.5s before the off of the warning lamp), since the warning lamp
flashes twice (the duration for each on and off is both T3, namely 0.5s), the first digit of the 2-digit
trouble code (tens digit) is at 2; after the presence of T4 (namely 1.5s after the off of the warning
lamp), since the warning lamp flashes once, the second digit of the 2-digit trouble code (ones digit) is
at 1. After that, the warning lamp will be off for 3s (namely T2 duration). Therefore, the display of
first trouble code is completed with the trouble code of 21. The detailed description of the trouble is
shown in the trouble code checklist in section 2.4. Also, the second trouble code of 22 can be
obtained.
③ Deletion of trouble code without trouble diagnosis instrument
After the trouble code readout and troubleshooting based on the trouble code checklist, it’s necessary
to delete the previous trouble code before the re-checking of the trouble code. The condition for
trouble code deletion is same with that of the trouble code readout. The detailed operation method is
as follows:
The steps in the above figure are respectively as follows:
A. After the brake pedal is depressed, ground the line L and rotate the vehicle key to the power on
position;
B. The ABS warning lamp illumination and go off in 3s;
C. Start to release the pedal within 1s after the ABS warning lamp goes off;
D. After the pedal is released for approximate 1s, re-depress the pedal for approximate
1s. Repeat the above operation for 5 times. During this operation, the warning lamp will
not be illuminated;
E. The ABS warning lamp illuminates and lasts for 3s. During this period, the trouble
code within this process will be deleted.
At the finish of the trouble code deletion, restore the ECU status of the ABS to the normal mode,
1s
2s
(2 times)
(3 times)
(4 times)
(5 times)
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