Lexus ES: Inspection

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / A25a-fks (engine Control) / Vacuum Switching Valve (for Engine Mounting) / Inspection

INSPECTION

PROCEDURE

1. INSPECT VACUUM SWITCHING VALVE (for Active Control Engine Mount System)

(a) Measure the resistance.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	20°C (68°F)	37 to 44 Ω
1 - Body ground		10 kΩ or higher
2 - Body ground		10 kΩ or higher

If the result is not as specified, replace the vacuum switching valve (for active control engine mount system).

*a	Component without harness connected (Vacuum Switching Valve (for Active Control Engine Mount System))

(b) Check the operation of the vacuum switching valve (for active control engine mount system).

(1) Using a vacuum pump, apply a vacuum of 67 kPa (503 mmHg, 19.8 in. Hg) to port (F) and check that the vacuum is maintained.

OK:

Vacuum pressure holds.

If the result is not as specified, replace the vacuum switching valve (for active control engine mount system).

Port (F)

(2) Check that air flows from port (E) to port (G).

Standard:

Air flows from port (E) to port (G).

If the result is not as specified, replace the vacuum switching valve (for active control engine mount system).

*a	Port (E)
*b	Port (G)
*c	Air

(3) Apply battery voltage to the terminals and check that air flows from port (E) to port (F).

Standard:

Air flows from port (E) to port (F).

If the result is not as specified, replace the vacuum switching valve (for active control engine mount system).

*a	Port (E)
*b	Port (F)
*c	Air

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Lexus ES: Inspection

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Installation

A25a-fks (engine Mechanical)

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