BAROMETRIC PRESSURE SENSOR/EGR BOOST SENSOR INSPECTION [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed))

Note

• Perform the following test only when directed.

Voltage Inspection

1. Turn the ignition switch to LOCK.

2. Connect the WDS or equivalent to the DLC-2.

3. Turn the ignition switch to ON position (Engine OFF).

4. Select BARO PID on the WDS or equivalent.

5. Disconnect the vacuum hose between the EGR boost sensor and the EGR boost sensor solenoid valve.

6. Verify that BARO PID is within the specification.

Note

• The output voltage varies with the following condition.

- Input voltage 4.5-5.5 V

- Outside temperature 10-50 °C {50-122 °F}

- Sea level -200-3,000 m {-656-9,840 ft}

Measurement voltage: 2.3-4.7 V

Caution

• Do not apply vacuum out of specification. Doing so will damage the EGR boost sensor.

7. Apply vacuum of -26.6 kPa {-200 mmHg, -7.85 inHg} to the EGR boost sensor and verify that BARO PID varies from Step 7 as specified.

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

Voltage variation: 0.8-1.3 V

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [AJ].)

2. Inspect the following wiring harness for open or short (Continuity check).

Open circuit

• If there is no continuity, the circuit is open. Repair or replace the harness.

- EGR boost sensor terminal C and PCM terminal 33

- EGR boost sensor terminal B and PCM terminal 37

- EGR boost sensor terminal A and PCM terminal 20

Short circuit

• If there is continuity, the circuit is shorted. Repair or replace the harness.

- EGR boost sensor terminal C and power supply

- EGR boost sensor terminal C and body ground

- EGR boost sensor terminal B and power supply

- EGR boost sensor terminal B and body ground

- EGR boost sensor terminal A and power supply