Toyota Sienna Service Manual: ABS Control System Malfunction
DTC 43 ABS Control System Malfunction
DESCRIPTION
This DTC is output when the VSC system detects a malfunction in the ABS
control system. 
INSPECTION PROCEDURE
NOTICE: When replacing the brake actuator assembly, perform zero point calibration (See page BC-70).
1 CHECK ABS CONTROL SYSTEM
(a) Clear the DTC (See page BC-82).
(b) Turn the ignition switch to the ON position.
(c) Check if the same DTC is recorded (See page BC-82).
Result
2 RECONFIRM DTC
(a) Turn the ignition switch off.
(b) Clear the DTC (See page BC-82).
(c) Start the engine.
(d) Drive the vehicle at a speed of approximately 40 km/h (25 mph) or more for 60 seconds or more.
(e) Check if the same DTC is recorded (See page BC-82).
Result
CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION)
Diagnostic trouble code chart
HINT:
If a malfunction code is displayed during the DTC check,
check the circuit indicated by the DTC. For details of each
code, turn to the page for the respective "DTC Code" in the
DTC ...
Right Front Wheel Speed Sensor Signal
DESCRIPTION
The speed sensor detects wheel speed and sends the appropriate signals to the
ECU. These signals are
used to control the ABS control system. The front and rear rotors have 48
ser ...
Other materials:
Rear Blower Motor Circuit
DESCRIPTION
Power to the rear blower motor is supplied from the battery via the RR A/C
relay.
The rear blower motor speed level varies between 0 and 31 based on the voltage
difference measured
between the terminals of the motor.
The voltage difference measured between the terminals of th ...
Installation
1. INSTALL PARKING BRAKE CONTROL PEDAL ASSEMBLY
(a) Install the parking brake control pedal assembly with
a bolt and the 2 nuts.
Torque: 39 N*m (398 kgf*cm, 29 ft.*lbf)
(b) Connect the parking brake switch connector.
(c) Connect the instrument panel junction block
assembly w/ wiring ha ...
Internal Control Module Random Access Memory
(RAM) Error
DTC P0604 Internal Control Module Random Access Memory
(RAM) Error
DESCRIPTION
The ECM continuously monitors its own internal memory status, internal
circuits, and output signals
transmitted to the throttle actuator. This self-check ensures that the ECM is
functioning properly. If any
malfu ...
