Turbine speed sensor inspection (AWR6B45)

1. Engine harness inspection

1) Disconnect the engine harness from the TCM.

2) Check for continuity between each connector terminal combinations listed in the table using a DMM.

Note

  • Check that continuity is as specified in the table.
  • A resistance value of 100 kΩ or more may be detected when resistance is measured between the terminals, but this is not a malfunction.

Caution

  • Do not damage the terminals.
Terminal name
 Continuity
NT+ - NT-
 Yes

Legend

  1. NT+
  2. NT-

2. Turbine speed sensor inspection

1) Remove the turbine speed sensor from the transmission.

2) Check for continuity between each connector terminal combinations listed in the table using a DMM.

Note

  • Check that continuity is as specified in the table.
  • A resistance value of 100 kΩ or more may be detected when resistance is measured between the terminals, but this is not a malfunction.

Caution

  • Do not apply impact to the turbine speed sensor.
  • Do not damage the terminals.
Terminal name
 Continuity
NT+ - NT-
 Yes

Legend

  1. NT+
  2. NT-

3) Connect the battery positive terminal to the NT+ terminal and the battery negative terminal to the NT- terminal via a 100 Ω resistor and ammeter.

Caution

  • Do not apply impact to the turbine speed sensor.
  • Do not damage the terminals.

Legend

  1. NT+
  2. NT-
  3. 100 Ω resistor
  4. Ammeter

4) Inspect the current of the steel material (non-magnetic) while brushing to the left and right with the tip of the turbine speed sensor (within 5 mm {0.197 in}).

Caution

  • Do not hit or damage the steel material with the turbine speed sensor when inspecting the current.
  • Do not damage the terminals.
Signal
 Current
High
 12.0 to 16.0 mA
Low
 4.0 to 8.0 mA

Legend

  1. Turbine speed sensor
  2. Shaking direction
  3. Steel material

Measurement position

a. 5 mm {0.197 in} or less

Copyright Mazda Motor Corporation. All rights reserved.