Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001N68K
Model Year Start: 2020 Model: Camry Prod Date Range: [03/2020 -           ]
Title: A25A-FKS (ENGINE CONTROL): SFI SYSTEM: Active Control Engine Mount System; 2020 - 2024 MY Camry [03/2020 -        ]

Active Control Engine Mount System

DESCRIPTION

LOCATION

*A

for 2WD models

-

-

*1

Vacuum Switching Valve (for Active Control Engine Mount System)

*2

Front Engine Mounting Insulator

*3

Rear Engine Mounting Insulator

-

-

*A

for AWD models

-

-

*1

Vacuum Switching Valve (for Active Control Engine Mount System)

*2

Front Engine Mounting Insulator

The active control engine mount system decreases engine vibration at a low engine speed using the vacuum switching valve (for active control engine mount system). The vacuum switching valve (for active control engine mount system) is controlled by a pulse signal transmitted to the vacuum switching valve (for active control engine mount system) from the ECM. The frequency of this pulse signal is matched to the engine speed to decrease engine vibration.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE ACM INHIBIT)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Active Test / Activate the ACM Inhibit.

Powertrain > Engine > Active Test

Tester Display

Activate the ACM Inhibit

(e) According to the display on the Techstream, perform the Active Test to operate the vacuum switching valve (for active control engine mount system) and for check the operating sound of the vacuum switching valve (for active control engine mount system).

OK:

Operating sounds can be heard.

NG

GO TO STEP 6

OK

2.

CHECK VACUUM HOSES

*A

for 2WD models

*B

for AWD models

*1

Engine

*2

Vacuum Pump Assembly

*3

Front Engine Mounting Insulator

*4

Rear Engine Mounting Insulator

*5

ECM

*6

Vacuum Switching Valve (for Active Control Engine Mount System)

(a) Check the air and vacuum hoses for looseness, disconnection and blockage.

OK:

No looseness, disconnection or blockage.

NG

REPAIR OR REPLACE VACUUM HOSES
OK

3.

CHECK VACUUM

(a) Disconnect the vacuum hose from the vacuum pump assembly.

(b) Start the engine.

(c) Check that the disconnected port located on the vacuum pump assembly applies suction to your finger.

OK:

Vacuum exists.

NG

REPLACE VACUUM PUMP ASSEMBLY

OK

4.

INSPECT FRONT ENGINE MOUNTING INSULATOR

(a) Inspect the front engine mounting insulator.

Click here 2020 - 2024 MY Camry [03/2020 -        ]; A25A-FKS (ENGINE CONTROL): ACTIVE CONTROL ENGINE MOUNT (for Front Side): ON-VEHICLE INSPECTION

Result

Proceed to

OK (for 2WD models)

A

OK (for AWD models)

B

NG

C
B

SYSTEM NORMAL
C

REPLACE FRONT ENGINE MOUNTING INSULATOR

A

5.

INSPECT REAR ENGINE MOUNTING INSULATOR

(a) Inspect the rear engine mounting insulator.

Click here 2018 - 2024 MY Camry [03/2017 -        ]; A25A-FKS (ENGINE CONTROL): ACTIVE CONTROL ENGINE MOUNT (for Rear Side): ON-VEHICLE INSPECTION

OK

SYSTEM NORMAL
NG

REPLACE REAR ENGINE MOUNTING INSULATOR 2020 MY Camry [09/2019 - 10/2020]; A25A-FKS (ENGINE CONTROL): ACTIVE CONTROL ENGINE MOUNT (for Rear Side): REMOVAL 2021 - 2022 MY Camry [10/2020 - 08/2022]; A25A-FKS (ENGINE CONTROL): ACTIVE CONTROL ENGINE MOUNT (for Rear Side): REMOVAL 2023 - 2024 MY Camry [08/2022 -        ]; A25A-FKS (ENGINE CONTROL): ACTIVE CONTROL ENGINE MOUNT (for Rear Side): REMOVAL

6.

CHECK TERMINAL VOLTAGE (POWER SOURCE OF VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM))

*a

Front view of wire harness connector

(to Vacuum Switching Valve (for Active Control Engine Mount System))

(a) Disconnect the vacuum switching valve (for active control engine mount system) connector.

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

C15-1 (+B) - Body ground

Ignition switch ON

11 to 14 V
NG

GO TO ECM POWER SOURCE CIRCUIT

OK

7.

INSPECT VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM)

(a) Inspect the vacuum switching valve (for active control engine mount system).

Click here 2018 - 2024 MY Camry [03/2017 -        ]; A25A-FKS (ENGINE CONTROL): VACUUM SWITCHING VALVE (for Engine Mounting): INSPECTION

NG

REPLACE VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM)

OK

8.

CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM) - ECM)

(a) Disconnect the vacuum switching valve (for active control engine mount system) connector.

(b) Disconnect the ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

C15-2 (ACM) - C100-44 (ACM)

Always

Below 1 Ω

C15-2 (ACM) or C100-44 (ACM) - Body ground and other terminals

Always

10 kΩ or higher
OK

REPLACE ECM 2020 MY Camry [03/2020 - 10/2020]; A25A-FKS (ENGINE CONTROL): ECM: REMOVAL 2021 - 2022 MY Camry [10/2020 - 08/2022]; A25A-FKS (ENGINE CONTROL): ECM: REMOVAL 2023 - 2024 MY Camry [08/2022 -        ]; A25A-FKS (ENGINE CONTROL): ECM: REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR