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

Testing & Diagnostics 9 illustrations ~270 words

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

Scheme 1: 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] (1 Of 2)

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

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

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

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

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

Scheme 4: 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] (1 Of 2)

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

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

Scheme 6

Scheme 6: PCM REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5]
Scheme 6: PCM REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5]
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5]»(ref-579330-S31782573982013100700000).)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5]»(ref-579330-S31782573982013100700000).)
  3. Remove the following items: (See «BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5]»(ref-579330-S31782573982013100700000).) Battery PCM cover No.1
  4. Disconnect the PCM connector. (See «PCM CONNECTOR CONNECTION NOTE»(ref-579389-S21457620332013100700000).)
  5. Remove the battery tray and PCM component. (See «BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5]»(ref-579330-S31782573982013100700000).)
  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]»(ref-579389-S27689616112013100700000).) Immobilizer system-related parts programming (See «IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM]»(ref-579383-S17071365332013100700000).) (See «IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]»(ref-579383-S20744652762013100700000).)

PCM Connector Inspection. Scheme 7

Scheme 7: PCM Connector Inspection
Scheme 7: PCM Connector Inspection

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9
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

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