MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [L3 Turbo]

Note

• Perform the following inspection only when directed.

• The following vacuum values are indicated by relative pressure from the MAP sensor.

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

2. Turn the ignition switch to ON (Engine off).

3. Select MAP PID on the WDS or equivalent.

4. Verify that the MAP 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 MAP sensor.

• If as verified, go to next step.

5. Apply vacuum of -25.0 kPa {-187 mmHg, -7.38 inHg} to the MAP sensor, and verify that the MAP 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. (See INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 Turbo].)

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [L3 Turbo].)

2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Open circuit

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

- MAP/boost air temperature sensor terminal A and PCM terminal 2H

- MAP/boost air temperature sensor terminal D and PCM terminal 1J

- MAP/boost air temperature sensor terminal C and PCM terminal 2K

Short circuit

• If there is continuity, there is a short circuit. Repair or replace the wiring harness.

- MAP/boost air temperature sensor terminal C and power supply.

- MAP/boost air temperature sensor terminal C and body ground.

- MAP/boost air temperature sensor terminal D and power supply.

- MAP/boost air temperature sensor terminal D and body ground