If there are no DTCs output but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
NOTICE: When replacing the brake actuator assembly, sensor, etc., turn the ignition switch off.
HINT: Inspect the fuse and relay before investigating the suspected areas as shown in the table below. Inspect each malfunction circuit in numerical order for the corresponding symptom.
Anti-lock brake system:

Terminals of ecu

Test mode procedure
Diagnosis systemSystem description
1. CRUISE CONTROL SYSTEM
This system is controlled by the ECM, and is activated by
the throttle position sensor and motor. The ECM controls
the following functions: ON-OFF, - (COAST)/SET, +
(ACCEL)/RES (RESUME), CANCEL, vehicle speed
operation, motor output control, and overdrive control.
& ...
Security Indicator Light Circuit
DESCRIPTION
Even when the theft deterrent system is in the disarmed state, the security
indicator blinks due to a signal
output from the immobiliser system. The security indicator blinks continuously
due to a continuous signal
received from the immobiliser system while in the armed state.
...
Types of child restraints
Child restraint systems are classified into the following 3 types
according to the age and size of the child:
Rear facing - Infant seat/convertible seat
Forward facing - Convertible seat
Booster seat
Selecting an appropriate child restraint system
Use a child rest ...