Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VI8I
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 08/2016]
Title: 2GR-FE (ENGINE CONTROL): ACTIVE CONTROL ENGINE MOUNT: ON-VEHICLE INSPECTION; 2016 MY Sienna [12/2015 - 08/2016]

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT FRONT ENGINE MOUNTING INSULATOR ASSEMBLY

(a) Check the operation.

(1) Connect the Techstream to the DLC3.

(2) Start the engine.

(3) Turn the Techstream on.

(4) Enter the following menus: Powertrain / Engine / Active Test / Control the ACM Inhibit.

Tester Display

Test Part

Control Range

Diagnostic Note

Control the ACM Inhibit

ACM

ON / OFF

Test is possible while engine is idling

(5) Check if the front engine mounting insulator assembly operates in accordance with tester operation.

OK:

Condition

Specified Condition

"Control the ACM Inhibit" is OFF

The engine does not move (insulator operation is normal).

"Control the ACM Inhibit" is ON

The engine moves in accordance with insulator operation.

HINT:

While "Control the ACM Inhibit" is ON, the front engine mounting insulator assembly operates repeatedly.

(b) Inspect for vacuum leaks.

(1) Disconnect the vacuum hose from the front engine mounting insulator assembly.

(2) Using a vacuum pump, apply vacuum of 80 kPa (600 mmHg, 24 in.Hg) and wait for 1 minute.

(3) Check that there is no change in the needle movement of the vacuum pump gauge.

OK:

Vacuum pressure holds.

(4) Check that there is no fluid leakage caused by a break in the diaphragm.

(5) Reconnect the vacuum hose.