Mazda 3 Service Manual: Shift Lock System Inspection

Shift-Lock System Inspection

1. Switch the ignition to ON.

2. Shift the selector lever to the P position.

3. Perform the following procedures to inspect the shift-lock system.

If there is any malfunction, inspect the shift-lock solenoid and P position switch..

a. Verify that the selector lever cannot be shifted from P to R position when the brake pedal is released.

b. Verify that the selector lever can be shifted from P to R position when the brake pedal is depressed.

Shift-Lock Solenoid and P Position Switch Inspection

1. Perform the following procedures.

a. Remove the battery cover..

b. Disconnect the negative battery cable..

c. Remove the console..

d. Disconnect the selector lever component connector.

2. Measure the voltage between the selector lever component terminals.

If there is any malfunction, repair or replace the related wiring harness.
If there is no malfunction even though the shift-lock system has any malfunction, replace the selector lever component..

Shift-lock solenoid specification

Terminals	Connected to	Test condition	Voltage (V)
E—GND	Brake switch	Brake pedal released	Below 1.0
E—GND	Brake switch	Brake pedal depressed	B+
I—GND	Ignition switch	Switch the ignition to off	Below 1.0
I—GND	Ignition switch	Switch the ignition to ACC or ON	B+
K—GND	GND	Under any condition	Below 1.0

Emergency Override Button Inspection

1. Switch the ignition to off.

2. Verify that the selector lever is in the P position.

3. Without the brake pedal depressed, verify that the selector lever cannot be shifted from the P position.

4. Remove the cover using a tape-wrapped flathead screwdriver.

5. Insert the flathead screwdriver into the emergency override hole and push it down.

6. Verify that the selector lever can be shifted from the P position.

Shift Lock System Inspection