VACUUM SWITCHING VALVE (for 1AR-FE): Inspection

INSPECT NO. 1 VACUUM SWITCHING VALVE ASSEMBLY

Check the No. 1 vacuum switching valve assembly for an open circuit.

Using an ohmmeter, measure the resistance according to the value(s) in the table below.

Standard Resistance

STANDARD RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
1 - 2	at 20°C (68°F)	23 to 26 Ω
1 - Body ground 2 - Body ground	-	10 MΩ or higher

If the result is not as specified, replace the No. 1 vacuum switching valve assembly.

Fig 1: Checking No. 1 Vacuum Switching Valve Assembly For An Open Circuit

G05414939

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the operation of the No. 1 vacuum switching valve assembly.
1. Check that air does not flow from port E to port F as shown in the illustration.
  If the result is not as specified, replace the No. 1 vacuum switching valve assembly.
  
  Fig 2: Checking Air Does Not Flow From Port E To Port F
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery positive voltage across the terminals.
3. Check that air flows from port E to port F as shown in the illustration.
  If the result is not as specified, replace the No. 1 vacuum switching valve assembly.
  
  Fig 3: Applying Battery Positive Voltage Across Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002