1. Disconnect the negative battery cable..
2. Remove the front bumper..
3. Remove the horn..
4. Apply battery positive voltage and connect the ground as shown in the figure and verify the horn beeper sound operation.

If the beep sound cannot be verified, replace the horn.
Horn
Horn Removal/InstallationAir Mix Actuator Removal/Installation [Full Auto Air Conditioner]
Driver-side
1. Disconnect the negative battery cable..
2. Disconnect the connector.
3. Remove the hook (1), remove the rod (2) from the air mix actuator link.
4. Remove the screw.
5. Remove the driver-side air mix actuator.
6. Install in the reverse order of removal.
Passenger- ...
Back Up Light Switch Removal/Installation [G35 M R]
1. Remove the battery cover..
2. Disconnect the negative battery cable.
3. Remove the battery component. (ex: battery, battery tray and PCM component).
4. Remove the aerodynamic under cover No.2..
5. Drain the oil from the transaxle..
6. Disconnect the back-up light switch connector and r ...
Power Steering Fluid Inspection
Fluid Level Inspection
1. Verify that the fluid level is between MAX and MIN of the sub tank when the
engine is cold.
If the fluid is not at the specified level, adjust the fluid level (MIN-MAX
on sub tank) by adding/draining the fluid.
Power steering fluid type
Mazda Gen ...