Manifold Absolute Pressure (Map) Sensor Inspection: Notes
NOTE:
- Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flow diagram. (See TROUBLESHOOTING PROCEDURE .)
- Connect the M-MDS or equivalent to the DLC-2.
- Turn the ignition switch to the ON position (Engine off).
- Select MAP PID on the M-MDS or equivalent.
- 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. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION .)
- If as verified, go to next step.
- If not as verified, perform the CIRCUIT OPEN/SHORT INSPECTION .
- 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 MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION .)
- If not as verified, perform the CIRCUIT OPEN/SHORT INSPECTION .