ON-BOARD DIAGNOSTIC [ENTERTAINMENT SYSTEM (WITHOUT CENTER DISPLAY)]

2016 – MX-5 – Body and Accessories

NOTE:

The entertainment system has an on-board diagnostic function and diagnostic assist function to facilitate system diagnosis.

A malfunction detection function, which detects overall malfunctions in the entertainment system-related parts.
A memory function, which stores detected DTCs.
A display function, which indicates system malfunctions via a DTC display.

Malfunction detection function

Memory function

If the audio unit detects a malfunction in the entertainment system, it stores the DTC in the audio unit.

^*: Because the Bluetooth^® unit only displays the currently detected DTC, the memory function is not available.

Stores malfunctions detected by the malfunction detection function as DTCs in the audio unit. The detected DTCs are not cleared even if the ignition is switched off or the negative battery cable is disconnected.
If the audio unit has already stored the maximum number of DTCs and detects another malfunction, it clears the oldest DTC and stores the new DTC.

Display Function

To display DTCs in the audio unit display that have been recorded in the memory function, activate the on-board diagnostic function by operating the audio unit. Refer to the [DTC INSPECTION [AUDIO UNIT]] in the Workshop Manual for the activation procedure of the on-board diagnostic function.

The DTCs consist of the following:

Error code	Malfunction contents
01	Mechanical malfunction
07	Poor data read-outs
09	No playable File/Track
11	CAN communication time-out
12	CAN line (communication line) error
20	Insufficient power supply
21	Amplifier related circuit
30	Temperature abnormality

For Audio Unit×: Applicable—: Not applicable

DTC No.	Warning/indicator light	Description	Fail-safe	Drive cycle	Memory function
16:Er11	—	CAN communication time-out	—	—	×
16:Er12	—	Unit communication error	—	—	×
28:Er09	—	No USB playback function file/track	—	—	×
No Err	—	DTCs are not stored.	—	—	—

For Bluetooth® Unit—: Not applicable

DTC No.	Warning/indicator light	Description	Fail-safe	Drive cycle	Memory function
26:Er81	—	Communication error with Bluetooth^® unit	—	—	—
26:Er82	—	Microphone circuit malfunction	—	—	—
26:Er83	—	Microphone circuit malfunction	—	—	—
26:Er84	—	Microphone circuit malfunction	—	—	—
26:Er85	—	Steering switch circuit malfunction	—	—	—
26:Er86	—	Bluetooth^® unit internal malfunction	—	—	—
No Err	—	DTCs are not stored.	—	—	—

For CD Player×: Applicable—: Not applicable

DTC No.	Warning/indicator light	Description	Fail-safe	Drive cycle	Memory function
30:Er01	—	CD player mechanism malfunction	—	—	×
30:Er07	—	CD player data read error	—	—	×
30:Er30	—	CD player temperature abnormality	—	—	×
No Err	—	DTCs are not stored.	—	—	—

For Audio Unit

DTC No.	Description	Detection condition
16:Er11	CAN communication time-out	Time-out occurs in the audio unit CAN signal.
16:Er12	Unit communication error	The audio unit cannot receive CAN signal.
28:Er09	No USB playback function file/track	When USB device connected, connection error detected. When USB device connected, audio unit internal malfunction detected. When USB device connected, read error detected.

For Bluetooth® Unit

DTC No.	Description	Detection condition
26:Er81	Communication error with Bluetooth^® unit	The audio unit cannot receive CAN signal from the Bluetooth^® unit.
26:Er82	Microphone circuit malfunction	Short to power supply detected in microphone input circuit.
26:Er83	Microphone circuit malfunction	Short to power ground detected in microphone power supply circuit.
26:Er84	Microphone circuit malfunction	Microphone non-connection signal detected continuously.
26:Er85	Steering switch circuit malfunction	Steering switch input signal is detected continuously for 2 min or more.
26:Er86	Bluetooth^® unit internal malfunction	Bluetooth^® unit detects the internal malfunction.

For CD Player

DTC No.	Description	Detection condition
30:Er01	CD player mechanism malfunction	CD player mechanism malfunction detected.
30:Er07	CD player data read error	CD player read error detected.
30:Er30	CD player temperature abnormality	Abnormal temperature in CD player is detected.

The entertainment system related parts are forcibly operated to enable verification of the connection condition and operation status of the entertainment system related parts. In addition, the specifications for the entertainment system related parts are displayed in the audio unit display to enable their verification. Refer to [DIAGNOSTIC ASSIST FUNCTION [AUDIO UNIT]] in the workshop manual for the diagnostic assist function activation procedure.

Diagnostic assist function table—: Not applicable

Display	Function	Content
	LCD inspection	Displays all characters in the audio unit display.
—	Button inspection	Sounds buzzer when the audio unit button is operated.
—	Speaker inspection	Outputs sound from the speakers in the following order: Without driver-side headrest speaker Door speaker (LH) and tweeter (LH) Door speaker (RH) and tweeter (RH) With driver-side headrest speaker Door speaker (LH) and tweeter (LH) Door speaker (RH) and tweeter (RH) Driver-side headrest speaker (RH) Driver-side headrest speaker (LH)
	Radio reception condition inspection	Displays the radio reception status in the audio unit display.
	Antenna control inspection	Displays the power supply output status to the antenna amplifier in the audio unit display.
	Antenna control inspection
	Dial inspection	Displays the rotation direction of the operated dial switch in the audio unit display.
	Dial inspection
	Audio amplifier specification verification	Displays the audio amplifier specification in the audio unit display.
	CD inspection	Displays the result of the CD inspection in the audio unit display. NOTE: If the CD inspection cannot be performed normally, TEST REJECTED is displayed in the audio unit display and the CD inspection mode stops.
	CD inspection
—	Hands-free password clearing	Clears the Hands-free password.
	CD part number verification	Displays the CD player part number in the audio unit display.