Toyota Sienna Service Manual: How to proceed with troubleshooting
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS
3 CHECK INITIAL CHECK FUNCTION
4 PROBLEM SYMPTOMS TABLE
THE CORRESPONDING SYSTEM DOES NOT EXIST (Go to step 5)
5 BASED ON THE MALFUNCTION SYMPTOM, PERFORM THE TROUBLESHOOTING BELOW
- Operation check (C).
- Terminals of ECU
6 ADJUST, REPAIR OR REPLACE
7 CONFIRMATION TEST
END
System description
1. GENERAL
This system uses ultrasonic sensors to detect any
obstacles at the corners and the rear of the vehicle.
The system then informs the driver of the distance
between the sens ...
Operation check
1. DETECTION RANGE MEASUREMENT AND INDICATOR CHECK
Turn the IG switch ON.
Move the shift lever to the R position (when the back
sonar and rear clearance sonar is checked).
...
Other materials:
Mute Signal Circuit between Radio Receiver and Stereo Component
Amplifier
DESCRIPTION
This circuit sends a signal to the stereo component amplifier to mute noise.
Because of that, the noise
produced by changing the sound source ceases.
If there is an open in the circuit, noise can be heard from the speakers when
changing the sound source.
If there is a short i ...
Inspection
1. V
(a) Inspect VSV operation.
(1) Using an ohmmeter, measure the resistance
according to the value(s) in the table below.V
Standard resistance
If the result is not as specified, replace the
vsv.
(B) inspect the vsv for ground.
(1) Using an ohmmeter, measure the resistance
accordin ...
Auto Up Operation does not Fully Close Power Window (Jam
Protection Function is Activated)
DESCRIPTION
If AUTO UP operation does not fully close the power window, the following
conditions may be the cause.
The reset of the power window motor has not been completed,
resulting in activation of the jam
protection function.
The memory of the power window switch misse ...
