Mazda CX-9 Grand Touring. Manual - part 121

DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, 
C1410, C1957, C1958 [DSC/RSC] 

DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 
[DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE 



RR ABS wheel-speed sensor: J-B  



LR ABS wheel-speed sensor: F-A  



LR ABS wheel-speed sensor: I-B  



Is there continuity?  

3

INSPECT ABS WHEEL-SPEED SENSOR 
FOR MALFUNCTION  



Turn the ignition switch off.  



Disconnect the ABS wheel-speed sensor 
connector which may have a malfunction.  



Turn the ignition switch to the ON position, 
(engine off)  



Measure the power supply voltage between 
the ABS wheel-speed sensor connector 
terminal A (vehicle wiring harness-side) and 
body ground on the ABS wheel-speed 
sensor which may have a malfunction.  



Is the power supply voltage of the ABS 
wheel-speed sensor which may have a 
malfunction more than 10 V?  

Yes

Replace the ABS wheel-speed sensor, then 
go to the next step. 
(See FRONT ABS WHEEL-SPEED 
SENSOR 
REMOVAL/INSTALLATION .) 
(See REAR ABS WHEEL-SPEED 
SENSOR 
REMOVAL/INSTALLATION [2WD] .)
(See REAR ABS WHEEL-SPEED 
SENSOR 
REMOVAL/INSTALLATION [AWD] .)

No

Go to the next step.

4

VERIFY THAT THE SAME DTC IS NOT 
PRESENT  



Clear the DTCs from the memory. 

(See ON-BOARD DIAGNOSTIC 
[DSC/RSC].) 



Are the same DTCs present?  

Yes

Repeat the inspection from Step 1. 
If the malfunction recurs, replace the 
DSC/RSC HU/CM, then go to the next 
step. 
(See DSC/RSC HU/CM 
REMOVAL/INSTALLATION .)

No

Go to the next step.

5

VERIFY THAT NO OTHER DTCS ARE 
PRESENT  



Are any other DTCs output?  

Yes

Go to the applicable DTC inspection. 
(See ON-BOARD DIAGNOSTIC 
[DSC/RSC].)

No

DTC troubleshooting completed.

DTC C1194

LF outlet solenoid valve system

DTC C1198

LF inlet solenoid valve system

DTC C1210

RF outlet solenoid valve system

DTC C1214

RF inlet solenoid valve system

 

2008 Mazda CX-9 Grand Touring 

2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 9:50:13 AM

Page 25 

© 2005 Mitchell Repair Information Company, LLC. 

DIAGNOSTIC PROCEDURE 

DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 
[DSC/RSC] DIAGNOSTIC PROCEDURE 

DTC C1242

LR outlet solenoid valve system

DTC C1246

RR outlet solenoid valve system

DTC C1250

LR inlet solenoid valve system

DTC C1254

RR inlet solenoid valve system

DTC C1404

RH traction control solenoid valve system

DTC C1410

LH traction control solenoid valve system

DTC C1957

RH stability control solenoid valve system

DTC C1958

LH stability control solenoid valve system

DETECTION 

CONDITION 



Solenoid valve operation does not correspond to solenoid ON/OFF 
commands from the DSC/RSC HU/CM.  

POSSIBLE CAUSE 



Open or short circuit in the DSC/RSC HU/CM internal solenoid valves  



Solenoid valve malfunction  



Poor connection at connectors (female terminal)  

STEP

INSPECTION

ACTION

1

VERIFY DTC INSPECTION  



Turn the ignition switch off.  



Connect the M-MDS to the DLC-2.  



Turn the ignition switch to the ON 
position (engine off).  



Clear the DTC from the memory. 

(See ON-BOARD DIAGNOSTIC 
[DSC/RSC].) 



Re-perform the DTC inspection.  



Is more than one solenoid valve-related 
DTC output?  

Yes Go to the next step.

No

Replace the DSC/RSC HU/CM, then go to the 

Step 3. 

(See DSC/RSC HU/CM 

REMOVAL/INSTALLATION .)

2

INSPECT DSC/RSC HU/CM POWER 
SUPPLY AND GROUND CIRCUIT FOR 
OPEN CIRCUIT  



Measure the voltage between DSC/RSC 
HU/CM terminal AL and terminal A.  



Is the voltage more than 10 V?  

Yes

Replace the DSC/RSC HU/CM, then go to the 
next step. 
(See DSC/RSC HU/CM 
REMOVAL/INSTALLATION .)

No

Repair or replace the wiring harness, then go 

to the next step.

VERIFY DTC TROUBLESHOOTING 
COMPLETED  

Repeat the inspection from Step 1. 

 

2008 Mazda CX-9 Grand Touring 

2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 9:50:13 AM

Page 26 

© 2005 Mitchell Repair Information Company, LLC. 

DTC C1222 [DSC/RSC] 

DTC C1222 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE 

DIAGNOSTIC PROCEDURE 

DTC C1222 [DSC/RSC] DIAGNOSTIC PROCEDURE 

3



Clear the DTC from the memory. 

(See ON-BOARD DIAGNOSTIC 
[DSC/RSC].) 



Are the same DTCs present?  

Yes

If the malfunction recurs, replace the 
DSC/RSC HU/CM, then go to the next step. 
(See DSC/RSC HU/CM 
REMOVAL/INSTALLATION .)

No

Go to the next step.

4

VERIFY AFTER REPAIR PROCEDURE 



Are any other DTCs present?  

Yes

Go to the applicable DTC inspection. 
(See ON-BOARD DIAGNOSTIC 
[DSC/RSC].)

No

DTC troubleshooting completed.

DTC C1222

ABS wheel-speed sensor system

DETECTION 

CONDITION 



When the difference in the wheel speed between one tire and the others 
exceeds 25%.  

POSSIBLE CAUSE 



A tire of different diameter is installed.  



An incorrect ABS sensor rotor is installed (different number of teeth).  

STEP

INSPECTION

ACTION

1

INSPECT PID (WHEEL SPEED) FOR 
DIFFERENCE IN EACH WHEEL 
SPEED USING M-MDS  



Turn the ignition switch off.  



Connect the M-MDS to the DLC-2.  



Select the following PIDs using the 
M-MDS: 

WSPD_LF 

WSPD_LR 

WSPD_RF 

WSPD_RR 



Drive the vehicle.  



Verify that the wheel speeds detected 

Yes Go to Step 4.

No

Go to the next step.

 

2008 Mazda CX-9 Grand Touring 

2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 9:50:13 AM

Page 27 

© 2005 Mitchell Repair Information Company, LLC. 

DTC C1233, C1234, C1235, C1236 [DSC/RSC] 

DTC C1233, C1234, C1235, C1236 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE 

by the four ABS wheel speed sensors 
are approximately the same.  



Are the wheel speeds approximately 
the same?  

2

INSPECT THE SIZE OF THE TIRE 
THAT HAS A DIFFERENT WHEEL 
SPEED  



Inspect the tire for differences in the 
tire diameter caused by the tire size, 
wear, or tire pressure.  



Is the tire diameter the same as the 
others?  

Yes Go to the next step.

No

Replace the tire, then go to Step 4.

3

INSPECT FOR INCORRECT ABS 
SENSOR ROTOR INSTALLATION  



Inspect if the number of teeth on the 
ABS sensor rotor is incorrect.  



Is the number of teeth correct?  

Yes Go to the next step.

No

Replace the ABS sensor rotor, then go to the 

next step. 

(See FRONT ABS WHEEL-SPEED SENSOR 

REMOVAL/INSTALLATION .) 

(See REAR ABS WHEEL-SPEED SENSOR 

REMOVAL/INSTALLATION [2WD] .) 

(See REAR ABS WHEEL-SPEED SENSOR 

REMOVAL/INSTALLATION [AWD] .)

4

VERIFY THAT THE SAME DTC IS 
NOT PRESENT  



Clear the DTC from the memory. 

(See ON-BOARD DIAGNOSTIC 
[DSC/RSC].) 



Are the same DTCs present?  

Yes

Repeat the inspection from Step 1. 
If the malfunction recurs, replace the DSC/RSC 
HU/CM, then go to the next step. 
(See DSC/RSC HU/CM 
REMOVAL/INSTALLATION .)

No

Go to the next step.

5

VERIFY THAT NO OTHER DTCS ARE 
PRESENT  



Are any other DTCs output?  

Yes

Go to the applicable DTC inspection. 
(See ON-BOARD DIAGNOSTIC 
[DSC/RSC].)

No

DTC troubleshooting completed.

DTC C1233

LF ABS wheel-speed sensor/ABS sensor rotor system

DTC C1234

RF ABS wheel-speed sensor/ABS sensor rotor system

DTC C1235

RR ABS wheel-speed sensor/ABS sensor rotor system

DTC C1236

LR ABS wheel-speed sensor/ABS sensor rotor system



Vehicle wheel speed signals of any of the four vehicle wheels indicate 

 

2008 Mazda CX-9 Grand Touring 

2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 9:50:13 AM

Page 28 

© 2005 Mitchell Repair Information Company, LLC.