Pinpoint Test E: Active Engine Mount Test
- E1: ACTIVE ENGINE MOUNT VACUUM LINES VISUAL CHECKS
- 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 E2.
No: Reconnect or replace damaged vacuum lines as required and retest
- Inspect all the vacuum lines for correct connection and for any damage
- E2: ACTIVE ENGINE MOUNT VACUUM LINES VACUUM CHECKS
- Disconnect the vacuum lines from the solenoid
- 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 E3.
No: Systematically check each vacuum line until the fault is identified. Repair or replace the faulty line as necessary and retest
- E3: CHECK ACTIVE ENGINE MOUNT SWITCH POSITION
- Inspect the left and right active engine mount switch positions as shown in the image
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 visable. GO to E4. And perform a vacuum test of the at fault engine mount. Only install a new engine mount if the vacuum test fails
No: GO to E4.
- Inspect the left and right active engine mount switch positions as shown in the image
- E4: ACTIVE ENGINE MOUNT VACUUM CHECKS
- Disconnect the vacuum lines directly from the left and right active engine mounts
- 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 E5.
No: The active engine mount is faulty, replace only the faulty active engine mount and retest
- Disconnect the vacuum lines directly from the left and right active engine mounts
- E5: ACTIVE ENGINE MOUNT SOLENOID ELECTRICAL CHECKS
- Refer to the appropriate wiring 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
- Refer to the appropriate wiring 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