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:
On-vehicle inspection
1. CHECK POWER SEAT FUNCTION
Check the basic functions.
Operate the power seat switches and check the
following seat functions:
Sliding
Reclining
Front vertical (Driver side seat only)
Lifter (Driver side seat only)
Lumbar suppo ...
If you have a flat tire
(vehicles with
run-flat tires)
Your vehicle is not equipped with a spare tire, but instead you
can continue driving the vehicle with run-flat tires even if any
tire goes flat.
In this case, slow down and drive with extra caution.
Run-flat tires (A “RFT” or “DSST” mark is molded on the sidewall)
Take your vehicle to ...
Diagnostic trouble code chart
1. DTC CHECK
If a malfunction code is displayed during the DTC check ,
check the suspected area listed for that code in the table
below, and proceed to the appropriate page.
DIAGNOSTIC TROUBLE CODE CHART
DTC No.
Detection Item
Suspect Area
B1244
Light Se ...
