Toyota Sienna Service Manual: Terminals of ecu
Check tire pressure warning ecu
HINT: Inspect the connectors from the back side while the connectors are connected.
(a) Disconnect the tire pressure warning antenna and receiver connector.
(b) Measure the voltage according to the value(s) in the table below.
(c) Connect the tire pressure warning antenna and receiver connector.
(d) Measure the voltage and resistance according to the value(s) in the table below. If the result is not as specified, the ECU may have a malfunction.
(e) Using an oscilloscope, check the waveform 1.
(1) Waveform 1 (Reference)
(2) Waveform 2 (Reference)
Problem symptoms table
HINT:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms
are listed in order of probability in the "Suspected Area"
column ...
Diagnosis system
1. CHECK BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge the battery before
proceeding.
2. CHECK DLC3
(a) The ECU uses the ISO 15765-4 for communication
pr ...
Other materials:
Air outlets
Location of air outlets
The air outlets and air volume
changes according to the
selected air flow mode.
Adjusting the position of the air outlets
Direct air flow to the front or
rear, up or down.
Temperature display
The temperature display on the multi-information display can be chan ...
Disassembly
1. REMOVE PROPELLER SHAFT ASSEMBLY
(a) Put matchmarks on both the flanges.
(b) Remove the 4 nuts, bolts and washers.
2. REMOVE INTERMEDIATE SHAFT
(a) Put matchmarks on the propeller shaft subassembly
and universal joint flange.
NOTICE:
Do not use a punch for the marks.
(b) Using a ...
Illumination Circuit
DESCRIPTION
Power is supplied to the radio receiver and steering pad switch illumination
when the light control switch is
in the TAIL or HEAD position.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
The vehicle is equipped with an SRS (Supplemental Restraint System) which
includes
compon ...
