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.

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
--- | ---
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
--- | ---
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

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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

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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.