If the skid control ecu detects a malfunction, the abs, vsc and brake warning lights and the slip, downhill assist control and auto lsd indicator lights come on in accordance with the trouble area to warn the driver.
The table below indicates which lights come on when there are malfunctions in particular functions.
Light on
Light on (blinking)
Light off
Hint:
Notice:
Before releasing the parking brake lever, set chocks to hold the vehicle for safety.
Hint:
When the parking brake is applied or the brake fluid level is low, the brake warning light comes on.
Hint:
If the warning lights do not illuminate, confirm whether the bulbs have burned out, and also check for can communication system dtcs, since the skid control ecu and combination meter are connected by the can communication line.
If the warning light remains on, perform relevant
troubleshooting procedures. The relevant
troubleshooting procedures are in the sections listed
in the table below.
Ecu power source circuit
Description
This is the power source for the tire pressure warning ecu.
Wiring diagram
Inspection procedure
Notice:
It is necessary to register an id code after replacing the tire pressure
monitor valve and/or the tire
pressure warning ecu (see page tw-9).
Inspect fuse (ecu-ig1)
...
Test mode procedure
Hint:
By switching the skid control ecu from normal mode to
test mode, abnormality detection sensitivity is enhanced
and troubleshooting can be conducted efficiently.
Perform a sensor check in test mode after the speed
sensor or sensor rotor has been repaired or replaced.
If the igniti ...
Occupant classification ecu
Components
On-vehicle inspection
Inspect occupant classification ecu
(vehicle not involved in collision)
Perform a diagnostic system check (see page rs-
236).
Inspect occupant classification ecu
(vehicle involved in collision)
Perform a diagnostic system check (see p ...