Check Pressure Sensor

a. Turn the ignition switch to the ON position.

b. Measure the voltage between terminals AIP and E2 of the ECM connector. Standard voltage: 1.0 to 2.2 V

If the result is not as specified, inspect the ECM or harness.

2006 ENGINE Emission Control - Sequoia

Fig. 9: Measuring Voltage Between Terminals AIP & E2 Of ECM Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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