Toyota Sienna Service Manual: Problem symptoms table
HINT:
- Before inspecting the suspected areas listed in the table below, check the fuse and relay.
- Before inspecting the suspected areas listed in the table below, check for DTCs.
- Methods used to verify the cause of the problem are listed in order of probability in the suspected area column.
Audio Function:
Steering Pad Switch Function:
Identification of noise source
1. Radio Description
Radio frequency band
Radio broadcasts use the radio frequency bands
shown in the table below.
Service area
The service areas of A ...
Terminals of ECU
1. RADIO RECEIVER (10 SPEAKER SYSTEM)
*1: with Rear Seat Entertainment System
2. RADIO RECEIVER (6 SPEAKER SYSTEM)
*1: with Rear Seat Entertainment System
*2: without Rear Seat ...
Other materials:
Front Occupant Classification Sensor LH Circuit
Malfunction
DTC B1780 Front Occupant Classification Sensor LH Circuit
Malfunction
DESCRIPTION
The front occupant classification sensor LH circuit consists of the occupant
classification ECU and the
front occupant classification sensor LH.
DTC B1780 is recorded when a malfunction is detected in the fron ...
Problem symptoms table
POWER BACK DOOR SYSTEM
Symptom
Suspected Area
Power back door does not operate when switch* is
pressed (* Switch indicates the satellite switch for
power back door)
ECU-B fuse
Power back door main switch
Satellite switch
Power back door tou ...
Brake System Malfunction
DTC P1578 Brake System Malfunction
DESCRIPTION
This DTC is output when the VSC system has a problem. Check the VSC system
when this DTC is
output
DTC No.
DTC Detection Condition
Trouble Area
P1578
The ECM receives a brake system error signal for 0.2
...
