Toyota Sienna Service Manual: How to proceed with troubleshooting
HINT: Troubleshoot in accordance with the procedures on the following pages.
1 VEHICLE BROUGHT TO WORKSHOP
2 DTC CHECK
- Check for DTCs and make a note of the code that is output (See page MP-14).
- Delete the DTC.
- Check if the DTC is output once again when the problem symptom is simulated based on the noted code.
- When no code is output (symptom check and simulation are possible), proceed to A.
- When a code is output, proceed to B.
3 PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM
- Terminals of ECU
4 ADJUST, REPAIR OR REPLACE
END
System description
1. MULTIPLEX COMMUNICATION SYSTEM (BEAN)
The BEAN communication line is used to control the
combination meter, the A/C amplifier, the airbag
sensor assembly, the multiplex network body ECU,
...
Terminals of ECU
1. MULTIPLEX NETWORK GATEWAY ECU
Disconnect the G4 ECU connector.
Measure the voltage between the specified
terminals on the wire harness side connector.
If the result is not as ...
Other materials:
Throttle Actuator Control Motor Circuit
DTC P2102 Throttle Actuator Control Motor Circuit Low
DTC P2103 Throttle Actuator Control Motor Circuit High
DESCRIPTION
The throttle actuator is operated by the ECM and opens and closes the
throttle valve using gears.
The opening angle of the throttle valve is detected by the Throttle Posit ...
Lost Communication with Steering Angle Sensor
Module
DTC U0126 Lost Communication with Steering Angle Sensor
Module
DESCRIPTION
This circuit detects the angle and direction of the steering wheel and
automatically transmits a signal to
the skid control ECU and distance control ECU.
DTC No.
DTC Detection Condition
Trouble ...
Open in Front Pretensioner Squib LH Circuit
DTC B0136/74 Open in Front Pretensioner Squib LH Circuit
DESCRIPTION
The front pretensioner squib LH circuit consists of the center airbag sensor
assembly and the front seat
outer belt assembly LH.
This circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0136/74 i ...
