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Heater System: Removal & Installation Mazda MPV I

Heater 4 illustrations ~394 words

Removal & Installation

Remove lower panel and undercover from passenger's side of instrument panel. (Scheme 3) Disconnect blower motor connector. Remove blower assembly. Remove blower motor from blower case. To install, reverse removal procedure.

Drain coolant. Remove instrument panel. See INSTRUMENT PANEL . Disconnect heater hoses from heater core. Remove instrument panel reinforcement. Carefully remove front heater assembly to prevent spilling coolant from heater core. To install, reverse removal procedure.

Remove heater assembly. See FRONT HEATER ASSEMBLY. Disassemble heater assembly, and remove heater core. (Scheme 1) To install, reverse removal procedure.

Scheme 1

Scheme 1: Removal & Installation

Removal & Installation (Push-Button)

Disconnect negative battery cable. Remove lower panel from driver's side of instrument panel. (Scheme 3) Disconnect electrical connector from airflow mode actuator on left side of heater case. Remove actuator. To install, reverse removal procedure.

Disconnect negative battery cable. Remove lower panel and undercover from passenger's side of instrument panel. (Scheme 3) Disconnect actuator electrical connector on right side of blower case. see scheme 4 Remove actuator. To install, reverse removal procedure.

Disconnect negative battery cable. Set rear heater temperature control knob to warm setting to open heater control valve. Drain coolant. Remove driver's seat. Disconnect heater hoses from heater core. (Scheme 2) Disconnect electrical connector. Remove rear heater assembly. To install, reverse removal procedure.

Exploded View Of Rear Heater Assembly. Scheme 2

Scheme 2: Exploded View Of Rear Heater Assembly

Remove rear heater assembly. See REAR HEATER ASSEMBLY. Disassemble case, and remove rear heater core. (Scheme 2) To install, reverse removal procedure.

Remove rear heater assembly. See REAR HEATER ASSEMBLY. Disassemble case, and remove rear blower motor. (Scheme 2) To install, reverse removal procedure.

Remove left and right lower panels and undercover from instrument panel. (Scheme 3) Remove instrument cluster. Remove switch panel. Remove center lower panel. Pull panel from cavity, and disconnect electrical connector. Remove heater control panel. To install, reverse removal procedure.

Removal & Installation (Slide Lever)

  1. Remove left and right lower panels and undercover from instrument panel. (Scheme 3) If necessary, remove steering column cover. Remove instrument cluster. Remove switch panel and center lower panel. Disconnect control cables from airflow mode door and fresh/recirculated air door.
  2. Remove heater control panel. To install, reverse removal procedure. Adjust airflow mode door and fresh/recirculated air door. See ADJUSTMENTS.

Disconnect negative battery cable. Remove all components in order listed in illustration. (Scheme 3) To install, reverse removal procedure.

Scheme 3

Scheme 3: Removal & Installation
Scheme 12: Heater System Wiring Diagram