Engine Control System [Mzr 2.0, Mzr 2.5]: Overview Mazda 3 BL facelift

Locating Engine Control System Components [MZR 2.0, MZR 2.5] (1 Of 2). Scheme 1

Locating Engine Control System Components [MZR 2.0, MZR 2.5] (2 Of 2). Scheme 2

Engine Control System Diagram [MZR 2.0, MZR 2.5]. Scheme 3

Engine Control System Wiring Diagram [MZR 2.0, MZR 2.5] (1 Of 2). Scheme 4

Engine Control System Wiring Diagram [MZR 2.0, MZR 2.5] (2 Of 2). Scheme 5

Scheme 6

1. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].)
2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].)
3. Remove the following items: (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].) Battery PCM cover No.1
4. Disconnect the PCM connector. (See PCM CONNECTOR CONNECTION NOTE.)
5. Remove the battery tray and PCM component. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].)
6. Remove in the order indicated in the table. (Scheme 6): Locating PCM
7. Install in the reverse order of removal.
8. When replacing the PCM on the vehicles, perform the following: PCM configuration (See PCM CONFIGURATION [MZR 2.0, MZR 2.5].) Immobilizer system-related parts programming (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM].) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)

PCM Connector Inspection. Scheme 7

Scheme 8

Scheme 9

1. Verify that the PCM connector lever is tilted towards the wiring harness side as shown in the figure. (Scheme 8): PCM Connector
2. Insert the PCM connector straight until it contacts the PCM and verify that the lever reverts upward naturally.
3. Push the lever until a click is heard. (Scheme 9): Connector Lever

See also:
• DTC TABLE [MZR 2.0, MZR 2.5]