On-Board Diagnostic System Malfunction Display Function[Mzi-3.5]; Features; Function; On-Board Diagnostic System Diagnostic Data Memory Function[Mzi-3.5] - Mazda CX-9 2007 Service Highlights

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ON-BOARD DIAGNOSTIC SYSTEM MALFUNCTION DISPLAY FUNCTION[MZI-3.5]

Features

• The MIL has been adopted to alert the driver when a malfunction occurs in the engine control system.
• The MIL is built into the instrument cluster.

Function

• When an engine control system malfunction occurs, a DTC is stored in the PCM at the same time the MIL
illuminates.
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ON-BOARD DIAGNOSTIC SYSTEM DIAGNOSTIC DATA MEMORY FUNCTION[MZI-3.5]

Features
• A diagnostic data memory function has been adopted for storing/clearing engine control system diagnostic
data.

Memory Function

• The following diagnostic data can be stored in the PCM using the memory function:
— DTC count
— DTCs
— Freeze frame data
— On-board diagnostic system status
• A DTC is stored in the PCM when an engine control system malfunction occurs. This stored DTC can then be
read-out using the Mazda Modular Diagnostic System (M-MDS) and is displayed as a five character code
(PXXXX).
• The DTC is stored in or cleared from the PCM according to the drive cycle count setting.

Initialization Function

• Diagnostic data stored in the PCM can be cleared using the initialization function.
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ON-BOARD DIAGNOSTIC [MZI-3.5]
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BRAKE
MIL
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