Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISELECTRICALHORNSINFORMATION CENTER [INSTRUMENTATION/DRIVER INFO]INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODECHECK CODE INSPECTION

2010 Mazda 5 Sport, 2.3 L, Standard

Check Code Inspection

2010 Mazda 5 Sport, 2.3 L, StandardSECTION Check Code Inspection

Check code 01

INSPECTION REFERENCE

Check code 01		Buckle switch and passenger sensing system
STEP	INSPECTION CONDITION	DISPLAY	ACTION
1	Unfasten driver-side seat belt. (Buckle switch ON)	on d	Go to the next step.
		off d	Inspect the following parts: Buckle switch (driver-side) SAS control module Wiring harness (Buckle switch (driver-side)-SAS control module)
		Err 1	Using the DTC and PID of SAS control module, inspect the SAS control module, buckle switch and related wiring harnesses. If there is no malfunction, inspect for the continuity between SAS control module terminal 1X and instrument cluster terminal 2H (wiring harness-side). If there is a continuity, replace the instrument cluster.
2	Fasten driver-side seat belt. (Buckle switch OFF)	oFF d	Go to the next step.
		on d	Inspect the following parts: Buckle switch (driver-side) SAS control module Wiring harness (Buckle switch (driver-side)-SAS control module)
		Err 1	Using the DTC and PID of SAS control module, inspect the SAS control module, buckle switch and related wiring harnesses. If there is no malfunction, inspect for the continuity between SAS control module terminal 1X and instrument cluster terminal 2H (wiring harness-side). If there is a continuity, replace the instrument cluster.
3	Seat one person in the passenger's seat, and unfasten passenger-side seat belt. (Seat weight sensor and buckle switch ON)	on P	Go to the next step.
		oFF P	Inspect the following parts: Buckle switch (passenger-side) Seat weight sensor control module Seat weight sensor SAS control module Wiring harness (Buckle switch (passenger-side)-SAS control module, seat weight sensor-Seat weight sensor control module-SAS control module)
		Err 1	Using the DTC and PID of SAS control module, inspect the SAS control module, buckle switch (driver-side, passenger-side), seat weight sensor control module, seat weight sensor and related wiring harnesses. If there is no malfunction, inspect for the continuity between SAS control module terminal 1X and instrument cluster terminal 2H (wiring harness-side). If there is a continuity, replace the instrument cluster.
		Err 2
4	Seat one person in the passenger's seat, and fasten passenger-side seat belt. (Seat weight sensor ON and buckle switch OFF) Seat no person in the passenger's seat, and unfasten passenger-side seat belt. (Seat weight sensor OFF and buckle switch ON) Seat no person in the passenger's seat, and fasten passenger-side seat belt. (Seat weight sensor and buckle switch OFF)	oFF P	Input signal to the instrument cluster is normal.
		on P	Inspect the following parts: Buckle switch (passenger-side) Seat weight sensor control module Seat weight sensor SAS control module Wiring harness (Buckle switch (passenger-side)-SAS control module, seat weight sensor-Seat weight sensor control module-SAS control module)
		Err 1	Using the DTC and PID of SAS control module, inspect the SAS control module, buckle switch (driver-side, passenger-side), seat weight sensor control module, seat weight sensor and related wiring harnesses. If there is no malfunction, inspect for the continuity between SAS control module terminal 1X and instrument cluster terminal 2H (wiring harness-side). If there is a continuity, replace the instrument cluster.
		Err 2

Check code 08

INSPECTION REFERENCE

Check code 08		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.
1		oFF	Verify that the voltage of instrument cluster terminal 1L is B+ . If the voltage is as specified, replace the instrument cluster. If the voltage is not as specified, inspect the following parts: TNS relay Wiring harness (Battery-TNS relay-instrument cluster)
2	Turn the headlight switch off. (TNS relay OFF)	on	Verify that the voltage of the instrument cluster terminal 1L is 1.0 V or less. If the voltage is as specified, replace the instrument cluster. If the voltage is not as specified, inspect the following parts: TNS relay Wiring harness (TNS relay-instrument cluster)
2	Turn the headlight switch off. (TNS relay OFF)	oFF	Input signal to the instrument cluster is normal.

Check code 12

INSPECTION REFERENCE

Check code 12		Speedometer display signal
INSPECTION CONDITION	DISPLAY	ACTION
After selecting check code 12, wait for approx. 2 s.	oo	The speedometer needle moves full scale then returns to approx. 60 km/h.	The speedometer is normal.
	oo	Except above	Replace the instrument cluster.
	Err	-	Replace the instrument cluster.

Check code 13

INSPECTION REFERENCE

Check code 13		Tachometer operation signal
INSPECTION CONDITION	DISPLAY	ACTION
After selecting check code 13, wait for approx. 2 s.	oo	The tachometer needle moves full scale then returns to approx. 3,000 rpm.	The tachometer is normal.
	oo	Except above	Replace the instrument cluster.
	Err	-	Replace the instrument cluster.

Check code 14

INSPECTION REFERENCE

Check code 14		Buzzer operation signal
INSPECTION CONDITION	DISPLAY	ACTION
After selecting check code 14, wait approx. 2 s.	on	The buzzer sounds.	The buzzer is normal.
After selecting check code 14, wait approx. 2 s.	on	The buzzer does not sound.	Replace the instrument cluster.

Check code 16

INSPECTION REFERENCE

Check code 16		Fuel-level warning light flashing signal
INSPECTION CONDITION	DISPLAY	ACTION
After selecting check code 16, wait approx. 2 s.	on (FLASHING)	Fuel-level warning light flashes three times.	The fuel-level warning light is normal.
After selecting check code 16, wait approx. 2 s.	on (FLASHING)	Except above	Replace the instrument cluster.

Check code 22

INSPECTION REFERENCE

Check code 22		Fuel level signal
STEP	INSPECTION CONDITION	DISPLAY	ACTION
1	Select check code 22 with the fuel gauge sender unit connector disconnected.	162 \| 003	Go to the next step.
1		Except above	Go to Step 6.
2	Connect terminals 2U and 2W of the instrument cluster.	000 \| 023	Go to the next step.
2	Connect terminals 2U and 2W of the instrument cluster.	Except above	Go to Step 6.
3	Using the SST (Fuel and thermometer checker) or resistor, input 20 ohms between instrument cluster terminals 2U and 2W.	017 \| 063	Go to the next step.
3		Except above	Go to Step 6.
4	Using the SST (Fuel and thermometer checker) or resistor, input 60 ohms between instrument cluster terminals 2U and 2W.	057 \| 063	Go to the next step.
4		Except above	Go to Step 6.
5	Using the SST (Fuel and thermometer checker) or resistor, input 100 ohms between instrument cluster terminals 2U and 2W.	097 \| 103	Inspect the fuel gauge sender unit.
5		Except above	Go to the next step.
6	Inspect the wiring harness and connector between instrument cluster and fuel gauge sender unit. If there is any malfunction, repair or replace the wiring harness or connector. If there is no malfunction, replace the instrument cluster.

Check code 23

INSPECTION REFERENCE

Check code 23		Fuel gauge operation signal
INSPECTION CONDITION	DISPLAY	ACTION
After selecting check code 23, wait approx. 2 s.	oo	The fuel gauge indicates status in the following order approx. every 2 s. F → 1/2 → E → F (fixed)	The fuel gauge is normal.
	oo	Except above	Replace the instrument cluster.
	Err	Replace the instrument cluster.

Check code 25

INSPECTION REFERENCE

Check code 25		Water temperature gauge operation signal
INSPECTION CONDITION	DISPLAY	ACTION
After selecting check code 25, wait approx. 2 s.	oo	The water temperature gauge indicates status in the following order approx. every 2 s. H → Center → C → H (fixed)	The water temperature gauge is normal.
	oo	Except above	Replace the instrument cluster.
	Err	Replace the instrument cluster.

Check code 26

INSPECTION REFERENCE

Check code 26		Odometer/tripmeter display signal
INSPECTION CONDITION	DISPLAY	ACTION
Select check code 26.	Courtesy of MAZDA MOTORS CORP.	Display is normal. Warning and indicator light illuminated. Generator warning light AT warning light ABS warning light Brake system warning light Selector indicator light MIL EHPAS warning light Security light Door ajar warning light Turn indicator light High-beam indicator light Cruise set indicator light Cruise main indicator light	The odometer/tripmeter is normal. Warning and indicator is normal.
Select check code 26.	Courtesy of MAZDA MOTORS CORP.	Except above	Replace the instrument cluster.

Check code 31

INSPECTION REFERENCE

Check code 31		Key reminder switch ON/OFF signal
STEP	INSPECTION CONDITION	DISPLAY	ACTION
1	Turn the headlight switch to the TNS position. Remove the key from the steering lock, then reinsert the key into the steering lock after selecting check code 31. (The key reminder switch is on.)	on	Go to the next step.
1		oFF	Verify that the voltage of instrument cluster terminal 2C is B+ . If the voltage is as specified, replace the instrument cluster. If the voltage is not as specified, inspect the following parts: Key reminder switch Wiring harness (Battery-key reminder switch-instrument cluster)
2	Remove the key from the steering lock. (The key reminder switch is off.)	on	Verify that the voltage of instrument cluster terminal 2C is 1.0 V or less. If the voltage is as specified, replace the instrument cluster. If the voltage is not as specified, inspect the following parts: Key reminder switch Wiring harness (Key reminder switch-instrument cluster)
2		oFF	Input signal to the instrument cluster is normal.

Check code 32

INSPECTION REFERENCE

Check code 32		Indicator buzzer
INSPECTION CONDITION	DISPLAY	ACTION
Turn the headlight switch to the TNS position. After selecting check code 32, wait approx. 2 s.	on	Indicator buzzer sounds three times.	The buzzer is normal.
	on	The buzzer does not sound.	Replace the instrument cluster.

Check code 57

INSPECTION REFERENCE

Check code 57		Panel light control signal
INSPECTION CONDITION	DISPLAY	ACTION
Turn the headlight switch to the TNS position. After selecting check code 57, wait approx. 2 s.	on (FLASHING)	Illumination light (hazard warning switch, center panel unit, etc.) flashes three times.	The panel light control signal is normal.
	on (FLASHING)	Except above	Verify that the voltage of instrument cluster terminal 1F is B+ . If the voltage is as specified, replace the instrument cluster. If the voltage is not as specified, inspect the following parts: Illumination light (hazard warning switch, center panel unit, etc.) Wiring harness (Instrument cluster-illumination lights-TNS relay)

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.