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:
Camshaft Position "A" - Timing Over
HINT:
If DTC P0011, P0012, P0021 or P0022 is present, check the VVT (Variable Valve
Timing) system.
DESCRIPTION
Refer to DTC P0010 (See page ES-75).
DTC No.
DTC Detection Condition
Trouble Area
P0011
P0021
Advanced cam timing:
With warm engine and engine spee ...
Radio Receiver Power Source Circuit
DESCRIPTION
This circuit provides power to the radio receiver.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT RADIO RECEIVER ASSEMBLY
Disconnect the radio receiver connector.
Measure the resistance according to the value in the
table below.
Standard resistance
Measure t ...
Removal
HINT:
Don't use the dropped or damaged yawrate sensor
Free from the foreign matters between yaerate sensor
bracket and body.
Make sure the sensor direction.
1. REMOVE FRONT SEAT ASSEMBLY RH
HINT:
See page SE-40.
2. REMOVE FRONT DOOR SCUFF PLATE RH
3. REMOVE COWL SIDE TRIM BOARD RH
...
