Toyota Sienna Service Manual: Monitor drive pattern

Toyota Sienna Service Manual / U151e automatic transaxle / Automatic transaxle system / Monitor drive pattern

1. MONITOR DRIVE PATTERN FOR ECT TEST

(a) Perform this drive pattern as one method to simulate the detection conditions of the ECT malfunctions. (The DTCs may not be detected due the actual driving conditions. And some codes may not be detected through this drive pattern.)

HINT: Preparation for driving

Warm up the engine sufficiently. (Engine coolant temperature is 60°C (140°F) or higher)
Drive the vehicle when the atmospheric temperature is -10°C (14°F) or higher.

(Malfunction is not detected when the atmospheric temperature is less than -10°C (14°F))

Driving note

Drive the vehicle through all gears.

Stop → 1st → 2nd → 3rd → 4th → 5th → 5th (lock-up ON).
Repeat the above driving pattern three times or more.

NOTICE:

The monitor status can be checked using the OBD II scan tool or intelligent tester. When using the intelligent tester, monitor status can be found in the "ENHANCED OBD II / DATA LIST" or under "CARB OBD II".
In the event that the drive pattern must be interrupted (possibly due to traffic conditions or other factors), the drive pattern can be resumed and, in most cases, the monitor can be completed.
Perform this drive pattern on a level road as much as possible and strictly observe the posted speed limits and traffic laws while driving.

MONITOR DRIVE PATTERN FOR ECT TEST

HINT: *1: Drive at such a speed in the uppermost gear, to engage lock-up. The vehicle can be driven at a speed lower than that in the above diagram under the lock-up condition.

NOTICE: If necessary to drive the vehicle for approximately 30 minutes to detect DTC P0711 (ATF temperature sensor malfunction).

Initialization

1. RESET MEMORY NOTICE: Perform the RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM. The RESET MEMORY can be performed ...

Problem symptoms table

HINT: If a normal code is displayed during the diagnostic trouble code check although the trouble still occurs, check the electrical circuits for each symptom in the order given in the chart ...

Other materials:

Disassembly
1. REMOVE NO. 2 FRONT AXLE INBOARD JOINT BOOT LH CLAMP (a) Using pliers, remove the No. 2 front axle inboard joint boot LH clamp, as shown in the illustration. 2. REMOVE FRONT AXLE INBOARD JOINT BOOT LH CLAMP (a) Remove the front axle inboard joint boot LH clamp using the same procedures a ...

On-vehicle inspection
1. INSPECT FRONT AIRBAG SENSOR (VEHICLE NOT INVOLVED IN COLLISION) Perform a diagnostic system check. 2. INSPECT FRONT AIRBAG SENSOR (VEHICLE INVOLVED IN COLLISION AND AIRBAG HAS NOT DEPLOYED) Perform a diagnostic system check. When the front bumper of the vehicle o ...

Symptom simulation
HINT: The most difficult case in troubleshooting is when no problem symptoms occur. In such a case, a thorough problem analysis must be carried out. A simulation of the same or similar conditions and environment in which the problem occurred in the customer's vehicle should be carried out. No ...