Mazda CX-9 Grand Touring. Manual - part 459

Fig. 13: Identifying Horn Components
Courtesy of MAZDA MOTORS CORP. 

4. Install in the reverse order of removal.  

INFORMATION DISPLAY REMOVAL/INSTALLATION 

1. Disconnect the negative battery cable.  

2. Remove the following parts: 

1. Front console box mat (See FRONT CONSOLE BOX MAT REMOVAL/INSTALLATION .)  

2. Indicator panel (See INDICATOR PANEL REMOVAL/INSTALLATION .)  

3. Decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION .)  

4. Front console box (See FRONT CONSOLE BOX REMOVAL/INSTALLATION .)  

5. Center panel (See CENTER PANEL REMOVAL/INSTALLATION .)  

3. Remove in the order indicated in the table. 

Fig. 14: Identifying Information Display Components 
Courtesy of MAZDA MOTORS CORP. 

4. Install in the reverse order of removal.  

INFORMATION DISPLAY 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

 

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 23 

© 2005 Mitchell Repair Information Company, LLC. 

01

Information display

CAN system 



DTC U2516: CAN system communication error  

02



Audio unit  



Climate control unit  

CAN system 



DTC U0184: Communication error to audio unit  



DTC U0164: Communication error to climate 
control unit  

04

TNS relay



TNS relay  



TNS signal wiring harness  

06

Ignition switch

Ignition switch

07

Dimmer cancel switch (Instrument 
cluster)



Instrument cluster  



Related wiring harness  

-

LCD

LCD

NOTE:



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.) 

Fig. 15: Information Display Input/Output Check Mode Procedure Chart 

 

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 24 

© 2005 Mitchell Repair Information Company, LLC. 

CHECK CODE INSPECTION 

Check code 01  

CHECK CODE INSPECTION CHART (CHECK CODE 01) 

Check code 02  

CHECK CODE INSPECTION CHART (CHECK CODE 02) 

Courtesy of MAZDA MOTORS CORP. 

Check code 01

CAN system

INSPECTION 

CONDITION

DISPLAY

ACTION

Select the check 
code 01.

CAN system of information display is normal.

CAN system communication error. (DTC 
U2516) (See DTC TABLE [MULTIPLEX 
COMMUNICATION SYSTEM] )

Check code 02



Communication status to audio unit  



Communication status to climate control unit  

INSPECTION 

CONDITION

DISPLAY

ACTION

All communications are 
normal.

 

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 25 

© 2005 Mitchell Repair Information Company, LLC. 

Check code 04  

CHECK CODE INSPECTION CHART (CHECK CODE 04) 

Select the check 
code 02. (The 
diagnostic results 
will be displayed 
once each in the 
order of audio unit 
and heater control 
unit.)

Audio unit

Communication to audio 
unit is normal.

Communication error to 

audio unit. (DTC U0184) 

(See DTC TABLE 

[MULTIPLEX 

COMMUNICATION 

SYSTEM] )

Vehicle without audio unit.

Climate control 
unit

Communication to climate 
control unit is normal.

Communication error to 

climate control unit. (DTC 

U0164) 

(See DTC TABLE 

[MULTIPLEX 

COMMUNICATION 

SYSTEM] )

Vehicle without climate 
control unit.

Check code 04

TNS relay ON/OFF signal

STEP

INSPECTION 

CONDITION

DISPLAY

ACTION

 

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 26 

© 2005 Mitchell Repair Information Company, LLC.