Mazda CX-9 Grand Touring. Manual - part 455

Fig. 6: Identifying Data Link Connector 2 
Courtesy of MAZDA MOTORS CORP. 



If the PCM and related harnesses do not have any malfunction, replace the instrument cluster. 

FUEL GAUGE 

1. Inspect the fuel gauge by setting it to check code 23 of the input/output check mode. (See 

INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODE.)  

WATER TEMPERATURE GAUGE 

1. Inspect the water temperature gauge by setting it to check code 25 of the input/output check mode. (See 

INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODE.)  

INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODE 

CHECK CODE TABLE 

CHECK CODE TABLE 

NOTE:



In this mode, it is possible to verify the items in the following chart. 

Check code

Check item

Related items

08

TNS relay



Lights-on reminder warning alarm  



Each illumination light  

12

Speedometer

Speedometer

13

Tachometer

Tachometer

14

Buzzer

Buzzer

16

Fuel-level warning light

Fuel-level warning light

22

Fuel gauge sender unit

Fuel gauge

23

Fuel gauge

Fuel gauge

25

Water temperature gauge

Water temperature gauge



Odometer/tripmeter (LCD)  



Odometer/tripmeter (LCD)  

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Instrumentation/Driver Info - Mazda CX-9

  

Microsoft 

 

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26



Warning and indicator light  



Warning and indicator light  

55

Panel light control switch (dimmer switch)

Panel light control switch (dimmer switch)

57

Panel light control

Illumination light bulb

NOTE:



Check codes which are not listed may be indicated, but they cannot be 
inspected.  



The check codes are displayed in numerical order. (While performing the 
inspection, if you want to inspect a check code with a number smaller than 
the code number you are currently inspecting, terminate the check mode 
then repeat the inspection from the beginning.)  



If a speed signal is input to the instrument cluster (the wheels are rotated), 
the input/output check mode will be cancelled.  



The check codes can be fast-forwarded by pushing and holding the 
odometer/tripmeter switch for 1 s or more. 

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Instrumentation/Driver Info - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:42:27 AM

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© 2005 Mitchell Repair Information Company, LLC. 

CHECKING ORDER 

Fig. 7: Instrument Cluster Input/Output Check Mode Procedure Chart 
Courtesy of MAZDA MOTORS CORP. 

NOTE:



When inspecting more than two check codes, begin with the code with the 

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Instrumentation/Driver Info - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:42:27 AM

Page 9 

© 2005 Mitchell Repair Information Company, LLC. 

CHECKING ORDER 

CHECK CODE INSPECTION 

Check code 08  

CHECK CODE INSPECTION CHART (CHECK CODE 08) 

highest ranking.  

Priority order of inspection

Check code

1

22

2

08, 12, 13, 14, 16, 23, 25, 26, 55, 57

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)

Go to the next step.

Verify that the voltage of instrument 

cluster terminal 1K 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)

Verify that the voltage of the 
instrument cluster terminal 1K 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)  

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Instrumentation/Driver Info - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:42:27 AM

Page 10 

© 2005 Mitchell Repair Information Company, LLC.