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:
Windshield wipers and
washer
Operating the wiper lever
The wiper operation is selected by moving the lever as follows.
The illustration is intended as an example.
Intermittent windshield wipers with interval adjuster
*1 or
*2
Intermittent windshield
wiper operation
*1 or
*2
Low speed windshield
w ...
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 the DTCs.
Methods used to verify the cause of the problem are listed
in order of probability in the ...
Evaporative Emission System Switching Valve Control Circuit High
DTC SUMMARY
DESCRIPTION
The circuit description can be found in the EVAP (Evaporative Emission)
System (See page ES-404).
INSPECTION PROCEDURE
Refer to the EVAP System (See page ES-404).
MONITOR DESCRIPTION
5 hours*1 after the ignition switch is turned off, the electric vacuum pump
...
