Toyota Sienna Service Manual: Precaution
1. INITIALIZATION
NOTICE:
- Perform RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM.
- Perform REGISTRATION (VIN registration) when replacing the ECM.
HINT: Initialization cannot be completed by only removing the battery.
2. FOR USING INTELLIGENT TESTER
CAUTION: Observe the following items for safety reasons:
- Before using the tester, read the instruction manual.
- Prevent the tester cable from being caught on the pedals, shift lever and steering wheel when driving with the tester connected to the vehicle.
- When driving the vehicle for testing purposes using the tester, two persons are required. One is for driving the vehicle, and the other operates the tester.
3. FOR USING BATTERY DURING INSPECTION
- While using the battery during inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.
4. COOLING FAN SYSTEM
NOTICE:
- When the ignition switch is turned off and the engine temperature is high, the cooling fans may operate for approximately 3 minutes.
- After turning the ignition switch off, keep hands and objects away from the fans when they are operating.
HINT: If all of the following are met for a certain period of time during a few minute period immediately before the engine is stopped, the electric fans will continue to operate for 3 minutes after the engine is stopped. This is performed to ensure restartability and stabilize idle speed.
- The intelligent tester indicates a very high coolant temperature.
- The intelligent tester indicates a high outside air temperature.
- The vehicle has been driven under high load (driving on an uphill or equivalent).
The following sensors are used for this control:
- Coolant temperature sensor
- Outside air temperature sensor
- MAF sensor
- Vehicle speed sensors
SFI system
...
Definition of terms
Terms
Definitions
Monitor Description
Description of what ECM monitors and how to detect malfunctions
(monitoring purpose and details).
Related DTCs
A gro ...
Other materials:
Inspection
1. INSPECT OIL PUMP RELIEF VALVE
(a) Coat the relief valve with engine oil and check that it
falls smoothly into the valve hole under its own
weight.
If the valve does not fall smoothly, replace the relief
valve. If necessary, replace the oil pump assembly.
2. INSPECT OIL PUMP ROTOR SET
...
No Answer-Back (Hazard Warning Light and Wireless Door Lock
Buzzer)
DESCRIPTION
If there is no answer-back of the hazard light signal and the wireless door lock
buzzer although the
wireless control function is operating normally, there might be a malfunction in
the hazard light signal and
the wireless door lock buzzer signal which are output from the multiple ...
On-vehicle inspection
1. CONNECT INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine and run at idle.
(c) Select the ACTIVE TEST mode on the intelligent
tester.
HINT:
Please refer to the intelligent tester operator's
manual for further details.
2. INSPECT ACTUATOR MOTOR ...
