FAIL-SAFE CHART
1. FAIL-SAFE OPERATION
The hydraulic brake booster turns off each solenoid and the ECM stops its VSC (traction control signal), which is based on signals from the skid control ECU. As a result, it is as if the ABS, TRAC and VSC systems are not installed in the vehicle.
ABS control is prohibited, but EBD control continues to the extent that
it is possible. If EBD control is impossible, the BRAKE warning light comes
on to warn the driver (See page ).
If it is impossible to control the systems, the indicator lights come
on or blink to inform the driver of termination of control of the systems
(See page ).
HINT:
If the hydraulic brake booster encounters a malfunction, brake performance is gradually lost and ABS, BA, TRAC, A-TRAC, AUTO LSD, VSC, downhill assist control, hill-start assist control, crawl control and multi-terrain select control system controls are prohibited.
(a) ABS, EBD and BA system:
Malfunction Area |
Control Method |
---|---|
ABS |
ABS, BA, TRAC, A-TRAC, AUTO LSD, VSC, downhill assist, hill-start assist, crawl and multi-terrain select control are prohibited |
BA system |
ABS, BA, TRAC, A-TRAC, AUTO LSD, VSC, downhill assist, hill-start assist, crawl and multi-terrain select control are prohibited |
EBD system |
ABS, BA, EBD, TRAC, A-TRAC, AUTO LSD, VSC, downhill assist, hill-start assist, crawl and multi-terrain select control are prohibited |
(b) TRAC, A-TRAC, VSC, AUTO LSD, downhill assist control, hill-start assist control and crawl control system:
HINT:
The TRAC, A-TRAC, VSC, AUTO LSD, downhill assist control, hill-start assist control and crawl control systems each prohibit different controls depending on the malfunctioning part.
Malfunction Area |
Control Method |
---|---|
Engine control system (TRAC and VSC systems) |
Before control: Disables control During control: Uses only brakes to perform control |
Brake control system (VSC system) |
Before control: Disables control During control: Uses only engine to perform control |
Brake control system (TRAC, A-TRAC, AUTO LSD, downhill assist control, hill-start assist control and crawl control systems) |
Before control: Disables control During control: Disables control (by gradually ending control) |
2. SYSTEM TEMPERATURE PROTECTION OPERATION
If the TRAC, A-TRAC, AUTO LSD, downhill assist control, hill-start assist control or crawl control system has been used constantly for a long time, the temperature of the hydraulic brake booster may increase excessively. If the temperature increases excessively, the skid control buzzer sounds intermittently. If the temperature increases even more, the skid control buzzer sounds for 3 seconds and the TRAC OFF indicator light comes on.
System |
Indicator Condition |
---|---|
TRAC, A-TRAC, AUTO LSD or hill-start assist control |
TRAC OFF indicator light comes on |
AUTO LSD |
TRAC OFF indicator light comes on AUTO LSD indicator light goes off |
Downhill assist control |
TRAC OFF indicator light comes on Downhill assist control indicator light blinks and then turns off |
Crawl control |
TRAC OFF indicator light comes on Crawl indicator light blinks and then turns off |
HINT:
If the systems automatically return to normal operating conditions, the TRAC OFF indicator light goes off. As this is not a malfunction, no DTC is stored.
Driver Side Power Window Auto Up / Down Function does not Operate with Power
Window Master Switch
DESCRIPTION
If the auto up/down function does not operate, the cause may be one or more of
the following:
The ECU in the power window regulator motor determines that the power
window regulator motor has not been initialized.
The master switc ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" ...