Mazda 6 Service Manual: Dtc p0122

Dtc p0121

Dtc p0123

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Mazda 6 Service Manual: Manual Transaxle Shift Pattern
  The shift pattern of the transaxle is conventional, as shown. Depress the clutch pedal all the way down while shifting; then release it slowly. Your vehicle is equipped with a device to prevent shifting to R (reverse) by mistake. Push the shift lever downward and shift to R.   ...

Mazda 6 Service Manual: A/c unit removal/installation
1. Disconnect the negative battery cable. 2. Discharge the refrigerant from the system. (See RECOVERY.) (See CHARGING.) 3. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT.) 4. Remove the dashboard. (See DASHBOARD REMOVAL/INSTALLATION.) 5. Remove the theft-deterrent control module. (See ...