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:
Engine Coolant Temperature Receiver Gauge Malfunction
DESCRIPTION
The meter CPU receives engine coolant temperature signals from the ECM via
the multiplex
communication lines. The meter CPU displays engine coolant temperature that is
calculated based on the
data received from the ECM.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
If there is ...
Fuel Receiver Gauge Malfunction
DESCRIPTION
The meter CPU uses the fuel sender gauge assembly to determine the level of
the fuel in the fuel tank.
The resistance of the fuel sender gauge will vary between approximately 15 Ω
with the float at the full
position, and 410 Ω with the float at the empty position. The ...
Reassembly
1. INSTALL NO. 1 COOLER THERMISTOR
(a) Install the No. 1 cooler thermistor as shown in the
illustration.
NOTICE:
Be sure to insert the thermistor only once
because reinserting it will not allow it to be
firmly secured.
When reusing the evaporator, insert the
thermistor one row ne ...
