INPUT/OUTPUT CHECK MODE OPERATION

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Operation Procedure

• Refer to Mazda MX-5 Workshop Manual.

Input Circuit Check

• When the parts listed in the chart are operated and a 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
--- | ---
01 | Buckle switch (driver’s side)
04 | Door switch
08 | TNS relay
22 | Fuel gauge sender unit
31 | Key reminder switch (built into the ignition switch or steering lock unit)
53 | Ambient temperature sensor
58 | Buckle switch (passenger’s side)

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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
18 | Ignition key illumination output
23 | Fuel gauge
25 | Water temperature gauge
26 | LCD, warning and indicator light
28 | Oil pressure gauge
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

Monitor item | Input-output signal/part name | Unit/State | Terminal
--- | --- | --- | ---
IC_DTC_CNT | Number of continuous DTCs | — | —
IC_ECT | Water temperature gauge | °C | 1J, 1L
IC_NUMKEYS | Number of key ID numbers registered with the vehicle | — | —
IC_ODO_CNT | Odometer | m | 1J, 1L
IC_SPDMTR | Speedometer | KPH
IC_TACHO | Tachometer | RPM
IC_VPWR | Power supply voltage | V | 1C