Yaris L4-1.5L (1NZ-FE) (2007)
b. Check the pressure sensor.
1. Set the manifold gauge.
2. Connect the connector to the pressure sensor.
3. Warm up the engine.
4. Switch A/C ON.
5. Using a voltmeter, measure the voltage between connector terminals 6 (PRE) and 11 (SG-1) of the air conditioner amplifier.
HINT: Check from the rear of the connector while the it is connected to the air conditioning amplifier.