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BAROMETRIC PRESSURE (BARO) SENSOR INSPECTION [L3]

BME014018210202

  Note

  • Perform the following inspection only when directed.
  • The following vacuum values are indicated by relative pressure from the barometric pressure sensor.

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

2. Turn the ignition switch to ON position.

3. Select BARO on the WDS or equivalent.

4. Verify that the BARO PID (pressure) and barometric pressure are practically equal.

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

  - If there is no open or short circuit, replace the barometric pressure sensor.

  • If as verified, go to next step.

5. Apply vacuum of -25.0 kPa {-187 mmHg, -7.38 inHg} to the barometric pressure sensor, and verify that the BARO variation from that of Step 4 is approx. 25.0 kPa {187 mmHg, 7.38 inHg}.

  • If not as verified, perform the "Circuit Open/Short inspection".

  - If there is no open or short circuit, replace the barometric pressure sensor.

## Circuit Open/Short Inspection

1. Disconnect the PCM connector.

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.
  - Barometric pressure sensor terminal A (harness-side) and PCM terminal 2H
  - Barometric pressure sensor terminal B (harness-side) and PCM terminal 1G
  - Barometric pressure sensor terminal C (harness-side) and PCM terminal 2K

### Short circuit

  • If there is continuity, the circuit is shorted. Repair or replace the harness.
  - Barometric pressure sensor terminal C (harness-side) and power supply
  - Barometric pressure sensor terminal C (harness-side) and body GND
  - Barometric pressure sensor terminal A (harness-side) and power supply
  - Barometric pressure sensor terminal B (harness-side) and body GND
  - Barometric pressure sensor terminal B (harness-side) and power supply