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:
Installation
1. INSTALL KNOCK CONTROL SENSOR
Install the 2 knock control sensors with the 2 bolts
as shown in the illustration.
Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf)
Connect the 2 knock control sensor connectors.
2. INSTALL INTAKE MANIFOLD
3. INSTALL FUEL MAIN TUBE SUB-ASSEMBLY
4 ...
Removal
1. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
2. REMOVE NO. 1 ENGINE UNDER COVER (See page
EM-26)
3. DRAIN ENGINE COOLANT (See page CO-6)
4. REMOVE NO. 2 AIR CLEANER INLET (See page EM-
28)
5. REMOVE BATTERY (See page EM-26)
6. REMOVE FRONT BUMPER ASSEMBLY (See page
ET-3)
7. REMOVE ...
Steering Pad Switch Circuit
DESCRIPTION
This circuit sends an operation signal from the steering pad switch to the
radio receiver.
If there is an open in the circuit, the navigation system cannot be operated
using the steering pad switch.
If there is a short in the circuit, the resulting condition is the same as if ...
