ON-BOARD DIAGNOSTIC [AUDIO AMPLIFIER (WITH CENTER DISPLAY)]

Outline

• The audio amplifier has an on-board diagnostic function to facilitate system diagnosis.

Function

• The on-board diagnostic function consists of the following functions:

• A malfunction detection function, which detects overall malfunctions in the audio amplifier-related parts

• A memory function, which stores detected DTCs

• A display function, which indicates system malfunctions via DTC display.

On-board Diagnostic Function

Malfunction detection function

• Detects malfunctions in input/output signals.

• If a malfunction occurs, the audio amplifier records the malfunction as a DTC. A recorded DTC can be read by the Mazda Modular Diagnostic System (M-MDS).

Memory function

• Stores malfunctions detected by the malfunction detection function as DTCs in the audio amplifier. The detected DTCs are not cleared even if the ignition is switched off or the negative battery cable is disconnected.

Display function

• Using the Mazda Modular Diagnostic System (M-MDS), DTCs can be read out and deleted.

DTC table

^*1

C: CMDTC self test

DTC 7-digit code definition

• When related systems or components have failed, the CM stores the DTC of the malfunctioning part in the CM memory, and allows for the retrieval of the store data using scanning tool when necessary. The DTCs are indicated using seven digits. Each digit indicates the following.

  

Status byte for DTC

• The two digits (two digits after hyphen (-)) after the seven-digit DTC.

  

• A code which indicates the pending code, current/past malfunction status, or warning illumination status.

• Can be read by performing a CMDTC self-test using the Mazda Modular Diagnostic System (M-MDS).

• For details, refer to the explanation on the Mazda Modular Diagnostic System (M-MDS) when reading the DTC.

Detection condition for the applicable DTC