On-Vehicle Inspection

WARNING: This page is about a different variant/trim than selected.

Inspect the power supply circuit for the intermediate sensor.
1. Set the battery and battery tray out of the way. (See BATTERY REMOVAL/INSTALLATION [MZR 2.5] .)
2. Disconnect the intermediate sensor connector.
3. Switch the ignition to ON (engine off).
  
  Fig 1: Intermediate Sensor
  Courtesy of MAZDA MOTORS CORP.
4. Measure the voltage at intermediate sensor connector terminal A (harness-side).
  - If there is any malfunction, repair wiring harness between intermediate sensor and TCM.
  Intermediate sensor specification B+
5. Switch the ignition to off (LOCK).
6. Connect the intermediate sensor connector.
  
  Fig 2: Intermediate Sensor Connector Terminals
  Courtesy of MAZDA MOTORS CORP.
Inspect the GND circuit for the intermediate sensor.
1. Switch the ignition to off (LOCK).
2. Measure the voltage at intermediate sensor connector terminal C (harness-side).
  - If there is any malfunction, repair wiring harness between intermediate sensor and TCM.
  Intermediate sensor specification Below 1.0 V
  
  Fig 3: Intermediate Sensor Connector Terminals
  Courtesy of MAZDA MOTORS CORP.
Inspect the signal circuit for the intermediate sensor.
1. Connect the oscilloscope to the following TCM connector terminals and set it as below.
  - (+) lead: TCM terminal 2L
  - (-) lead: battery negative terminal
  - Oscilloscope setting: 1 V/DIV (Y), 200 μs/DIV (X), DC range
2. Start the engine.
3. Measure the wave form when the following conditions are met.
  - Vehicle speed: 30 km/h {19 mph}
  - Gear position: 3 GR
    - If there is any malfunction, replace the intermediate sensor. (See INTERMEDIATE SENSOR REMOVAL/INSTALLATION .)
      
      Fig 4: Intermediate Sensor Oscilloscope Graph
      Courtesy of MAZDA MOTORS CORP.