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 remove the back-up light switch.

7. Install the back-up light switch (with a new gasket) to the transaxle case.
20—29 N·m {2.1—2.9 kgf·m, 15—21 ft·lbf}
8. Install the battery component. (ex: battery, battery tray and PCM component).
9. Install the battery cover..
10. Add the specified amount and type of oil..
11. Install the aerodynamic under cover No.2..
Back Up Light Switch Removal/Installation [G35 M R]
Combination Switch Disassembly/AssemblyABS HU/CM Inspection
1. Disconnect the ABS HU/CM connector..
2. Connect the negative battery cable..
3. Attach the tester lead to the ABS HU/CM wiring harness-side connector and
inspect the voltage, continuity, or resistance according to the standard (reference
value) in the table below.
Standard (reference)
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Precaution
Intermittent Concern Troubleshooting
Vibration method
If malfunction occurs or becomes worse while driving on a rough road or when
the engine is vibrating, perform the steps below.
NOTE:
There are several reasons why vehicle or engine vibration could cause an
electrical m ...
Contact Authorized Mazda Dealer and Have Vehicle Inspected
If any of the following warning lights or the indicator light turns on/flashes, the system may
have a malfunction. Contact an Authorized Mazda Dealer to have your vehicle
inspected.
...