EXHAUST GAS PRESSURE SENSOR INSPECTION [MZR-CD (RF Turbo)]

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Caution

• Because the output characteristics of the exhaust gas pressure sensor are adjusted while it is installed to the bracket, replace the exhaust gas pressure sensor and the bracket as a single unit.

Note

• Perform the following test only when directed.

Voltage Inspection

1. While the connector is connected, remove the hoses attached to exhaust gas pressure sensor ports A and B.

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2. Turn the engine switch to ON.

3. Verify that the voltage at PCM terminal 81 is within the specification.

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

― If there is no open/short circuit, replace the exhaust gas pressure sensor and the bracket as a single unit. (See EXHAUST GAS PRESSURE SENSOR/EXHAUST GAS PRESSURE CORRECTION TEMPERATURE SENSOR REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

Specification

1.0—4.5 V

4. Verify that the voltage variance at PCM terminal 81 is within the specification when a pressure of 0—100 Kpa is applied to exhaust gas pressure sensor port A.

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

Voltage variance

1.0—4.5 V

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

2. Inspect for open/short circuit in the following wiring harnesses.

• If there is open/short circuit, repair or replace wiring harness.

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Open circuit

• Exhaust gas pressure sensor terminal A and PCM terminal 62

• Exhaust gas pressure sensor terminal B and PCM terminal 81

• Exhaust gas pressure sensor terminal C and PCM terminal 60

Short circuit

• Exhaust gas pressure sensor terminal A and power supply

• Exhaust gas pressure sensor terminal A and body ground

• Exhaust gas pressure sensor terminal B and power supply

• Exhaust gas pressure sensor terminal B and body ground

• Exhaust gas pressure sensor terminal C and power supply

• Exhaust gas pressure sensor terminal C and body ground