Mazda 3 Service Manual: Transaxle Range (TR) Switch Inspection [FS5 A EL]
Water or foreign objects entering the connector can cause a poor connection or corrosion. Be sure not to drop water or foreign objects on the connector when disconnecting it.
1. Perform the following procedures to inspect the TR switch.
If there is any malfunction, adjust the TR switch..
a. Engage the parking brake and use wheel chocks at the front and rear of the wheels.
b. Verify that the starter operates only when the ignition is switched to START with the selector lever in the P position or the N position.
c. Verify that the back-up lights illuminate when shifted to the R position with the ignition at ON.
d. Verify that the positions of the selector lever and the selector indicator light are aligned.
1. Engage the parking brake and use wheel chocks at the front and rear of the wheels.
2. Perform the following procedures.
a. Remove the battery cover..
b. Disconnect the negative battery cable.
c. Remove the air cleaner component..
d. Disconnect the TR switch connector.
3. Inspect continuity as indicated in the table.