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HOMESERVICE MANUALSMAZDA2008TRIBUTE S SPORT, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 63 (ENGINE CONTROLS [SYSTEM & COMPONENT TESTING])AIR INDUCTION SYSTEMSINTAKE MANIFOLD COMMUNICATION CONTROL - MPVIMCC SYSTEM INSPECTION
2008 Mazda Tribute s Sport, 4WD

IMCC System Inspection

2008 Mazda Tribute s Sport, 4WDSECTION IMCC System Inspection
WARNING: This page is about a different car, the 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, 2003 Mazda MPV, and 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. Intake Manifold Communication Control (IMCC) actuator valve opens above 3750 RPM and closes again above 5500 RPM. Valve is normally closed. Using scan tool, check for DTCs. If DTC P0660 is present, see DTC P0660: INTAKE MANIFOLD COMMUNICATION CONTROL testing procedure in SELF-DIAGNOSTICS - MPV article. If DTC P0660 is not present, check IMCC actuator operation. Remove IMCC actuator. Using fused jumper wires, connect battery voltage to IMCC actuator connector terminals. Ensure IMCC actuator operates properly. See Fig 1. If IMCC actuator operates as specified, check for open or short circuit. Go to next step. If IMCC actuator does not operate as specified, replace IMCC actuator.

  2. Open Circuit Inspection

    Disconnect PCM, IMCC actuator and main relay harness connectors. Check for continuity between following terminals:
    • PCM 104-pin harness connector terminal No. 28 and IMCC actuator 2-pin harness connector terminal "B" (Red/Black wire).
    • Main relay 4-pin harness connector terminal "D" (Yellow wire) and IMCC actuator harness connector terminal "A" (White/Red wire).

    If continuity is present, go to next step. If continuity is not present, repair open circuit in suspect wire or replace wire harness. See appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.

  3. Short Circuit Inspection

    Check for continuity between following:
    • IMCC actuator harness connector terminal "A" (White/Red wire) and ground.
    • IMCC actuator harness connector terminal "B" (Red/Black wire) and power.
    • IMCC actuator harness connector terminal "B" (Red/Black wire) and ground.

    If continuity is present, repair short circuit in suspect wire or replace wire harness.

Fig 1: Checking Operation Of IMCC Actuator (MPV)
G00110222Courtesy of MAZDA MOTORS CORP.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.