Pinpoint Test B: Active Engine Mount Test

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

B1: ACTIVE ENGINE MOUNT VACUUM LINES VACUUM CHECKS
1. Inspect all the vacuum lines for correct connection and for any damage
Are all the vacuum lines correctly connected and free from damage?

Yes

GO to B2.

No

Reconnect or replace damaged vacuum lines as required and retest
B2: ACTIVE ENGINE MOUNT VACUUM LINES VACUUM CHECKS
1. Disconnect the vacuum lines from the solenoid
2. Using the Jaguar Land Rover approved vacuum testing equipment, connect to the vacuum system and check it can hold a vacuum
Did the vacuum system hold a constant vacuum when tested?

Yes

GO to B3.

No

Systematically check each vacuum line until the fault is identified. Repair or replace the faulty line as necessary and retest

B3: ACTIVE ENGINE MOUNT VACUUM LINES VACUUM CHECKS

Inspect the left and right active engine mount switch positions as shown in the image

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

Is the active engine mount switch clearly visible as shown in the image?

Yes

The active engine mount may still be serviceable even if the switch is clearly visible. GO to B4. and perform a vacuum test of the engine mount. Only install a new engine mount if the vacuum test fails

GO to B4.

B4: ACTIVE ENGINE MOUNT VACUUM CHECKS

Disconnect the vacuum lines directly from the left and right active engine mounts

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

Using the Jaguar Land Rover approved vacuum testing equipment, connect to each active engine mount and check it is holding vacuum. The engine mount should switch before 0.4 bar of vacuum is pulled and then be able to hold the vacuum for 30 seconds

Did the engine mount hold the vacuum for 30 seconds?

Yes

GO to B5.

The active engine mount is faulty, replace only the faulty active engine mount and retest

B5: ACTIVE ENGINE MOUNT SOLENOID ELECTRICAL CHECKS
1. Refer to the electrical circuit diagrams and check the active engine mount solenoid circuit for short circuit to ground, open circuit, high resistance. Repair circuit as required and retest. Check vacuum is present at the end of the lines
Did the check and repair of the active engine mount solenoid circuit resolve the issue?

Yes

No further action is required

No

Check and install a new active engine mount solenoid as required and retest. If the fault persists, reconfirm the customer symptoms