MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [ZJ, ZY, Z6]

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With Throttle Valve Actuator Only

Note

•  Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart. (See HOW TO USE THIS MANUAL.)

Voltage inspection

1.  Remove the MAP sensor with the connector still connected.

2.  Remove the vacuum hose of the MAP sensor.

3.  Verify that the MAP sensor output voltage (M-MDS PID: MAP) is within the specification when the ignition switch is turned to the ON position. (See PCM INSPECTION [ZJ, ZY, Z6].)

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

4.  Install the vacuum pump.

5.  Turn the ignition switch to the ON position.

6.  Verify that change in voltage is within the specification when a vacuum of 30 kPa {225 mmHg, 8.86 inHg} is applied using a vacuum pump.

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

•  If the monitor item condition/specification (reference) is not within the specification, even though there is no malfunction, perform the “Circuit Open/Short Inspection“.

Circuit open/short inspection

1.  Remove the PCM connector cover.

2.  Disconnect the PCM connector. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [ZJ, ZY, Z6].)

3.  Inspect the following wiring harness for open or short circuit (Continuity inspection).

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Open circuit

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

―  MAP sensor terminal C and PCM terminal 2AO

―  MAP sensor terminal A and PCM terminal 2J

―  MAP sensor terminal B and PCM terminal 2AP

Short circuit

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

―  MAP sensor terminal C and body ground

―  MAP sensor terminal A and power supply

―  MAP sensor terminal B and body ground

―  MAP sensor terminal B and power supply