On-Vehicle Inspection

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Water or foreign material entering the connector can cause a poor connection or corrosion. Be sure not to allow water or foreign material on the connector when disconnecting.
Do not damage the terminals.

Disconnect the negative battery cable.
Remove the air cleaner component. (See INTAKE AIR SYSTEM REMOVAL/INSTALLATION .)
Remove the TCM. (See TCM REMOVAL/INSTALLATION .)
Verify that there is no continuity between the coupler component terminals B19 and GND or B20 and GND.
- If there is any malfunction, inspect the coupler component.
- If the coupler component is normal, replace the ATX. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION .)
NOTE:
- Inspect with a tester that can indicate more than 10 megohms and confirm that the value is more than 1 megohm .
  
  Fig 1: Identifying Coupler Component Terminals
  Courtesy of MAZDA MOTORS CORP.
Verify that there is continuity between coupler component terminals B19 and B20.
- If there is any malfunction, inspect the coupler component.
- If the coupler component is normal, replace the ATX. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION .)
Fig 2: Identifying Coupler Component Terminals
Courtesy of MAZDA MOTORS CORP.
Install the TCM. (See TCM REMOVAL/INSTALLATION .)
Install the air cleaner component. (See INTAKE AIR SYSTEM REMOVAL/INSTALLATION .)
Connect the negative battery cable.