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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.

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".

  - 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)].)

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.

### 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