ON-BOARD DIAGNOSTIC OPERATION [INSTRUMENT CLUSTER]

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Malfunction Detection Function

• If a malfunction occurs in the input/output signals, other units or the CAN system, it is recorded as a DTC. Recorded DTCs can be read by the Mazda Modular Diagnostic System (M-MDS).

DTC table

×: Applicable

—: Not applicable

DTC No.	Malfunction location	Freeze frame data
B1213^*1	Only one key ID number is registered	—
B1342	Instrument cluster internal ECU malfunction	—
B1600^*1	The key ID number data cannot be read	—
B1601^*1	The instrument cluster has detected unregistered key ID number	—
B1602^*1	The instrument cluster cannot read key ID number data normally	—
B1681^*1	No detected communication with the coil antenna	—
B2103^*1	• Coil antenna malfunction • The PCM determined a malfunction in the coil antenna even though it is normal	—
B2139^*1	ID number data in the PCM and the instrument cluster do not match	—
B2141^*1	Communication error between the instrument cluster and the PCM (data transfer error)	—
B2143^*2	ID registration failure	—
B2431^*1	Key ID number registration error	—
B2477	Instrument cluster configuration error	—
B2868^*2	Wheel unit No.1 (internal malfunction)	—
B2869^*2	Wheel unit No.2 (internal malfunction)	—
B2870^*2	Wheel unit No.3 (internal malfunction)	—
B2871^*2	Wheel unit No.4 (internal malfunction)	—
U0073	Module communication error (HS-CAN)	—
U0100	Communication error with PCM	×
U0101	Communication error with TCM	×
U0114^*3	Communication error with 4WD control module	×
U0121	Communication error with DSC/RSC HU/CM	×
U0127^*2	With advanced keyless entry and start system: • Communication failure between instrument cluster and keyless control module With keyless entry system • Communication failure between instrument cluster and keyless receiver	×
U0140	Communication error with BCM	×
U0151	Communication error with SAS control module	×
U0200^*4	Communication error with BSM control module	×
U0214^*5	Communication error with keyless control module	×
U023A^*6	Communication error with forward sensing camera (FSC)	×
U2023	Error data from other module	×
U2064	Warning light illumination request signal from other module	×
U2197	Error signal from PCM	—
U2510^*1	Communication error between the instrument cluster and the PCM (no response)	—
U2616^*2	Wheel unit No.1 (No response)	×
U2617^*2	Wheel unit No.2 (No response)	×
U2618^*2	Wheel unit No.3 (No response)	×
U2619^*2	Wheel unit No.4 (No response)	×

*1 :Vehicles with keyless entry system

*2 :Vehicles with tire pressure monitoring system

*3 :4WD

*4 :Vehicles with blind spot monitoring (BSM)

*5 :Vehicles with advanced keyless entry and start system

*6 :Vehicles with forward sensing camera (FSC)

Freeze Frame Data

• When a DTC is recorded, the related instrument cluster control status is stored. This recorded data is freeze frame data. Freeze frame data availability for each DTC is indicated in the DTC table.

• The freeze frame data recorded range contains 4 types of data (FFD1 to FFD4), with the most recent data being FFD1.

― Determine which unit is thought to be malfunctioning based on the warning light illumination, meters and gauges records recorded in the freeze frame data, and perform malfunction diagnosis.

― Even for malfunctions that are not currently occurring, analysis of the period (traveled distance) and malfunction status (warning light, gauges, meters control status, type of malfunction) of past malfunction occurrence can be done from the freeze frame data.

• The recorded freeze frame data can be read by the Mazda Modular Diagnostic System (M-MDS).

• The items recorded as freeze frame data are as follows:

Freeze frame data

Unit

Note

Malfunction type

—

•  Communication errors of other units

•  Abnormal messages from the PCM

•  Warning light illumination request signal from other units

Illuminated warning light

—

Target warning light:

•  Air bag system warning light

•  Generator warning light

•  MIL

•  Oil pressure warning light

•  DSC indicator light

•  ABS warning light

•  Brake system warning light

•  AT warning light

•  4WD warning light

•  Keyless warning light

Meter, gauge control status

—

Target meter, gauge:

•  Speedometer

•  Tachometer

•  Water temperature gauge

Traveled distance after DTC recorded

km

Only the last four digits are recorded

DTC cleared flag

Cleared/Not cleared

The freeze frame data will not be cleared even if the DTC data is cleared. If a DTC is cleared, a DTC cleared flag 'Cleared' is recorded with the corresponding freeze frame data.

Freeze frame data	Unit	Note
Malfunction type	—	• Communication errors of other units • Abnormal messages from the PCM • Warning light illumination request signal from other units
Illuminated warning light	—	Target warning light: • Air bag system warning light • Generator warning light • MIL • Oil pressure warning light • DSC indicator light • ABS warning light • Brake system warning light • AT warning light • 4WD warning light • Keyless warning light
Meter, gauge control status	—	Target meter, gauge: • Speedometer • Tachometer • Water temperature gauge
Traveled distance after DTC recorded	km	Only the last four digits are recorded
DTC cleared flag	Cleared/Not cleared	The freeze frame data will not be cleared even if the DTC data is cleared. If a DTC is cleared, a DTC cleared flag 'Cleared' is recorded with the corresponding freeze frame data.

DTCs and recorded freeze frame data

• The unit thought to be malfunctioning can be inferred from the content of the freeze frame data.

• The traveled distance at the time of the DTC and the DTC cleared flag are also recorded in the DTC.

• To avoid false diagnosis, verify whether the warning lights, meters or gauges are normal using the input/output check mode.

Warning light illumination request signal from other modules (U2064)

×: Applicable

Freeze frame data		Warning light illumination request unit
Freeze frame data		PCM	TCM	DSC/RSC HU/CM	Keyless control module	4WD control module	SAS control module
Illuminated warning light	Air bag system warning light	—	—	—	—	—	×
	Generator warning light	×	—	—	—	—	—
	MIL	×	—	—	—	—	—
	Oil pressure warning light	—	—	—	—	—	—
	DSC indicator light	—	—	—	—	—	—
	ABS warning light	—	—	×	—	—	—
	Brake system warning light	—	—	×	—	—	—
	AT warning light	—	×	—	—	—	—
	4WD warning light	—	—	—	—	×	—
	Keyless warning light	—	—	—	—	—	—
Meter, gauge control status	Speedometer	—	—	—	—	—	—
	Tachometer	—	—	—	—	—	—
	Water temperature gauge	—	—	—	—	—	—

• The freeze frame data will be recorded after the warning light illumination request has continued for 3 s or more. However, it will not be recorded under the following situations.

― Illumination request for a burnt out bulb check is received

― The instrument cluster power supply voltage is 10 V or less

― During the period of twenty seconds after the instrument cluster power supply voltage goes from 10 V or less to 10 V or more.

― Engine speed is 500 rpm or less (Engine warning light and generator warning light only)

• If several warning light illumination requests are received, they will be recorded in one freeze frame data.

Communication errors of other units (U0100, U0101, U0114, U0121, U0140, U0151, U0214)

×: Applicable

Freeze frame data		Unit that communication error occurs
Freeze frame data		PCM (U0100)	TCM (U0101)	DSC/RSC HU/CM (U0121)	BCM (U0140)	Keyless control module (U0214)	4WD control module (U0114)	SAS control module (U0151)
Illuminated warning light	Air bag system warning light	—	—	—	—	—	—	×
	Generator warning light	×^*1	—	—	—	—	—	—
	MIL	×^*1	—	—	—	—	—	—
	Oil pressure warning light	—	—	—	×	—	—	—
	DSC indicator light	—	—	×^*2	—	—	—	—
	ABS warning light	—	—	×	—	—	—	—
	Brake system warning light	—	—	×	×	—	—	—
	AT warning light	—	×	—	—	—	—	—
	4WD warning light	—	—	—	—	—	×	—
	Keyless warning light	—	—	—	—	×	—	—
Meter, gauge control status	Speedometer	×	—	—	—	—	—	—
	Tachometer	×	—	—	—	—	—	—
	Water temperature gauge	×^*1	—	—	—	—	—	—

*1 :Can be recorded based on the PCM communication error status.

*2 :Can be recorded based on the DSC/RSC HU/CM communication error status.

• The speedometer and the tachometer initiate fail-safe control (Indicates the 0) 1 s from the occurrence of a communication error.

• The water temperature gauge initiates a fail safe control (Indicates the position at IG OFF) 5 s from the occurrence of a communication error.

• If several communication errors are detected at the same time, the control status of several illuminated warning lights, meters or gauges are recorded in one freeze frame data.

• Perform malfunction diagnosis of communication errors following the on-board diagnostic system [Multi-communication system].

Abnormal messages from other module (U2023)

×: Applicable

Freeze frame data		PCM	Keyless control module	SAS control module
Illuminated warning light	Air bag system warning light	—	—	×
	Generator warning light	—	—	—
	MIL	—	—	—
	Oil pressure warning light	×	—	—
	DSC indicator light	—	—	—
	ABS warning light	—	—	—
	Brake system warning light	—	—	—
	AT warning light	—	—	—
	4WD warning light	—	—	—
	Keyless warning light	—	×	—
Meter, gauge control status	Speedometer	×	—	—
	Tachometer	×	—	—
	Water temperature gauge	×	—	—

• If several malfunction signals are received at the same time, the control status of several meters and gauges are stored in one freeze frame data.

Input/Output Check Mode

Operation procedure

• Refer to the Workshop Manual.

Input circuit check

• When the parts listed in the chart are operated and signal is output to the instrument cluster, the built-in microcomputer determines the operability of the input circuit based on that signal.

Check code

Parts sending input signal

08

TNS relay

22

Fuel gauge sender unit

55

Dimmer switch

Check code	Parts sending input signal
08	TNS relay
22	Fuel gauge sender unit
55	Dimmer switch

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Individual circuit check

• By operating the parts listed in the chart, the built-in microcomputer determines the operability of the individual parts.

Check code

Parts sending input signal

12

Speedometer

13

Tachometer

14

Buzzer

16

Fuel-level warning light

23

Fuel gauge

25

Water temperature gauge

26

Odometer/tripmeter (LCD)

Warning and indicator light

57

Panel light control

Check code	Parts sending input signal
12	Speedometer
13	Tachometer
14	Buzzer
16	Fuel-level warning light
23	Fuel gauge
25	Water temperature gauge
26	Odometer/tripmeter (LCD) Warning and indicator light
57	Panel light control

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PID/Data Monitor and Record

• The PID/data monitoring items for the instrument cluster is as shown in following the table:

Monitor item table

—: Not applicable

PID name (Definition)	Unit/Operation	Data contents	Action/Inspection item(s)
IC_DTC_CNT	―	Displays the number of continuous DTCs.	―
IC_ECT	°C, °F	Displays the engine coolant temperature.	Water temperature gauge (instrument cluster)
IC_FFD1_MLG	km, ft, mi	Indicates the mileage. (Freeze frame PID data 1)	―
IC_FFD2_MLG	km, ft, mi	Indicates the mileage. (Freeze frame PID data 2)	―
IC_NUMKEYS^*1	―	Displays the number of key ID numbers registered with the vehicle.	Instrument cluster
IC_ODO_CNT	km, ft, mi	Displays the odometer rolling count (repeat 0—51 m).	Odometer (instrument cluster)
IC_SPDMTR	KPH, MPH	Displays the vehicle speed.	Speedometer (instrument cluster)
IC_TACHO	RPM	Displays the engine speed.	Tachometer (instrument cluster)

*1 :Australian specs.