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Check Code Inspection

WARNING: This page is about a different car, the 2008 Mazda 5. However, it is still accessible from the selected car via links, so may be relevant.

Check code 01 

CHECK CODE INSPECTION CHART (CHECK CODE 01)

Check code 01 CAN system
DISPLAY ACTION
OK  CAN system of information display is normal.
U2516  CAN system communication error. (DTC U2516)
(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM] )

Check code 02 

CHECK CODE INSPECTION CHART (CHECK CODE 02)

Check code 02
  • Communication status to audio unit
  • Communication status to climate control unit
  • Communication status to instrument cluster
DISPLAY ACTION
02 OK  Communication to all unit (audio unit, climate control unit, instrument cluster) is normal.
Audio unit OK ACU  Communication to audio unit is normal.
U0 184 ACU  Communication error to audio unit. (DTC U0184)
(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM] )
None ACU  Vehicle without audio unit.
Climate control unit OK EMC  Communication to climate control unit is normal.
U01G4EBTC  Communication error to climate control unit. (DTC U0164)
(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM] )
None EATC  Vehicle without climate control unit.
Instrument cluster OK HEC  Communication to instrument cluster is normal.
U0181HEC  Communication error to instrument cluster. (DTC U0181)
(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM] )

Check code 04 

CHECK CODE INSPECTION CHART (CHECK CODE 04)

Check code 04 TNS relay ON/OFF signal
STEP INSPECTION CONDITION DISPLAY ACTION
1 Turn the headlight switch to the TNS position. (TNS relay ON) ON  Go to the next step.
OFF  Verify that the voltage of information display terminal C is B+  .
  • If the voltage is as specified, replace the information display.
  • If the voltage is not as specified, inspect the following parts:
    • TNS relay
    • Wiring harness (Battery-TNS relay-information display)
2 Turn the headlight switch off. (TNS relay OFF) ON  Verify that the voltage of the information display terminal C is 1.0 V or less  .
  • If the voltage is as specified, replace the information display.
  • If the voltage is not as specified, inspect the following parts:
    • TNS relay
    • Wiring harness (TNS relay-information display)
OFF Input signal to the information display is normal.

Check code 09 

CHECK CODE INSPECTION CHART (CHECK CODE 09)

Check code 09 Clock switch signal
STEP INSPECTION CONDITION DISPLAY ACTION
1 Do not operate the clock switch. 227 | 255  Go to the next step.
Except above Go to Step 5.
2 Press the H switch, and hold. 070 | 084  Go to the next step.
Except above Go to Step 5.
3 Press the M switch, and hold. 102 | 117  Go to the next step.
Except above Go to Step 5.
4 Press the :00 switch, and hold. 000 | 003  Clock switch is normal.
Except above Go to the next step.
5 Inspect the clock switch.
  • If there is any malfunction, repair or replace the wiring harness or connector.
  • If there is no malfunction, replace the information display.

All segments illuminated 

ALL SEGMENTS ILLUMINATION REFERENCE

- LCD
DISPLAY ACTION
G05545953
 All segments and dots illuminated. LCD is normal.
Except above Replace the information display.
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