BOOST SENSOR INSPECTION [WL-3]

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Note

• Perform the following inspection only when directed.

Visual Inspection

1. Inspect the boost sensor for damage and cracks.

• If not as specified, replace the boost sensor.

2. Inspect vacuum hose for improper routing, kinks or leakage.

• If there is any malfunction, repair vacuum hose.

• If there is not any malfunction, perform the “Voltage Inspection”.

Resistance Inspection

1. Disconnect the boost sensor connector.

2. Measure the resistance between boost sensor connector terminals A —B, and C— B.

• If not within the specification, replace the boost sensor.

• If as specified, carry out the “Voltage Inspection”.

Resistance

Approx. 15 kilohm

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Voltage Inspection

1. Turn the engine switch to the ON position (Engine off).

2. Set the M-MDS and monitor the MAP PID. (See ON-BOARD DIAGNOSTIC TEST [WL-3].)

• If not as specified, perform the “Circuit Open/Short Inspection”.

― If there is no open/short circuit, replace the boost sensor. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [WL-3].)

MAP PID (Reference)

Approx. 2.6 V[Atmospheric pressure 101 kPa {757.5 mmHg, 29.8 inHg}]

3. Start the engine and warm up the engine completely.

4. Monitor the MAP PID using the M-MDS at idle.

• If not as specified, perform the “Circuit Open/Short Inspection”.

― If there is no open/short circuit, replace the boost sensor. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [WL-3].)

MAP PID (Reference)

Approx. 2.6 V[Atmospheric pressure 101 kPa {757.5 mmHg, 29.8 inHg}]

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [WL-3].)

2. Disconnect the boost sensor connector.

3. Inspect for open/short circuit in the following wiring harnesses.

• If there is open/short circuit, repair or replace wiring harnesses.

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Open circuit

• Power circuit (Boost sensor connector terminal C and PCM connector terminal 1A)

• Ground circuit (Boost sensor connector terminal A and PCM connector terminal 1B)

• Signal circuit (Boost sensor connector terminal B and PCM connector terminal 1P)

Short circuit

• Boost sensor connector terminal A and PCM connector terminal 1B short to power supply

• Boost sensor connector terminal B and PCM connector terminal 1P short to power supply

• Boost sensor connector terminal B and PCM connector terminal 1P short to body ground

• Boost sensor connector terminal C and PCM connector terminal 1A short to power supply

• Boost sensor connector terminal C and PCM connector terminal 1A short to body ground