ANTI-LOCK BRAKE SYSTEM TROUBLESHOOTING AND TESTING - CONTINUED
DIAGNOSTICS - CONTINUED
To erase faults from the ECU, you must be in the clear mode. To enter the clear mode, press and hold the blink
code switch for at least three seconds, then release.
If the system displays eight quick flashes followed by a system configuration code, the clear was successful. The
ABS fault has been cleared from memory.
If you do not receive eight flashes, there are still active faults that must be repaired before they can be cleared.
Blink Code Diagnostic Procedures.
For the step-by-step blink code diagnostic procedure, see Table 3.
Table 3. Blink Code Diagnostic Procedure.
Step 1. Turn the ignition on.
The ABS warning lamp comes on
indicating System Okay.
No recognizable faults in the ABS. No
The ABS warning lamp does not
light, indicating possible wiring fault
or burned-out bulb.
Inspect the wiring. Inspect the bulb.
Make necessary repairs.
The ABS warning lamp stays on,
indicating there is a fault, or faults, in
diagnostics. Go to the next step.
Step 2. Press and hold the
Blink Code Switch for one
second, then release.
The ABS warning lamp begins
flashing two-digit blink codes(s).
Determine if the fault is active or
repeatedly display one code.
Stored Fault: The lamp will display
the code for each stored fault then stop
blinking. Faults will be displayed one
at a time.
Step 3. Count the flashes to
determine the blink code.
First Digit: 1 to 8 flashes; Pause (1-1/
2 seconds). Second Digit: 1 to 6
flashes; pause (4 seconds).
Turn the ignition off. Find the
definition for the blink code in Table 2.
Step 4. Repair and record the
Make the necessary repairs. Repeat the
first three steps of this procedure until
System Okay Code (1-1) is received.
Record for future reference.
NOTE: The last fault code stored is the
first fault code displayed.
Step 5. Clear faults from the
memory: Press and hold the
blink code switch for at least
three seconds, then release.
The ABS warning lamp flashes eight
All faults are successfully cleared.
Turn the ignition off.
Eight flashes are not received.
Active faults still exist. Repeat the first
four steps of this procedure.