Diagnostic Precautions

For Fast and Accurate Diagnosis
PRECAUTIONS FOR DIAGNOSIS
Before performing diagnosis, always read precautions.

If ABS actuator and electric unit (control unit), steering angle sensor, steering system parts, suspension system parts, or tires have been replaced, or if alignment has been adjusted, be sure to adjust neutral position of steering angle sensor before driving.

When replacing ABS actuator and electric unit (control unit), be sure labels on control units are the same part number.

After diagnosis is finished, be sure to erase memory.

When checking continuity and voltage between units, be sure to check for disconnection, looseness, bend, or collapse of connector terminals. If any non-standard condition is found, repair or replace connector terminals.

VDC/TCS/ABS SYMPTOM CHART:

For intermittent symptoms, possible cause is malfunction in harness, harness connector, or terminals. Move harness, harness connector, and terminals to check for poor connections.

If a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.

To use CONSULT-II to perform self-diagnosis of ABS actuator and electric unit (control unit), active tests, or work support, first stop work, then connect CONSULT-II and select "ABS".

CONSULT-II self-diagnosis results are displayed without regard to occurrence timing. In some cases later ones (timing value is small) appear on the next screen.

While self-diagnosis results of CONSULT-II shows an error, if CONSULT-II active test is performed, an engine system error may be indicated. In this case, start engine to resume the normal screen.

ON AND OFF TIMING FOR ABS WARNING LAMP, VDC OFF INDICATOR LAMP, AND SLIP INDICATOR LAMP:

VDC/TCS/ABS system electronically controls brake operation and engine output. The above symptoms may be caused by normal operations: