Toyota Sienna Service Manual: Vacuum switching valve

Vacuum tank

On-vehicle inspection 1. Inspect air cleaner cap sub-assembly (A) check that air flows from port b to port a. (B) apply 60 kpa (450 mm hg, 18 in. Hg) of vacuum to port b. Check that there is ...

Inspection

1. V (a) Inspect VSV operation. (1) Using an ohmmeter, measure the resistance according to the value(s) in the table below.V Standard resistance If the result is not as specified, replace t ...

Other materials:

Removal
1. Remove engine under cover no.1 2. Disconnect cable from negative battery terminal 3. Drain automatic transaxle fluid (see page ax-131) 4. Remove automatic transaxle oil pan subassembly (a) Remove the 18 bolts, oil pan and gasket. NOTICE: Some fluid will remain in the oil pan. ...

Cooling fan relay
On-vehicle inspection 1. Cooling fan relay (a) Remove the relay from engine room relay block No. 1. (b) Measure the resistance of the relay. Standard resistance If the result is not as specified, replace the cooling fan relay. (c) Install the relay to engine room relay block No. ...

Intake Air Temperature Sensor Gradient Too High
DESCRIPTION The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF) meter, monitors the IAT. The IAT sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the IAT becomes low, the resistance of the the ...