Mazda 6. Manual - part 252

P–64

ON-BOARD DIAGNOSTIC (ABS/TCS) 

End Of Sie

DTC C1414

A6E697567650W14

Diagnostic procedure

End Of Sie

DTC C1508

A6E697567650W17

Diagnostic procedure

End Of Sie

DTC C1510, C1511, C1512, C1513

A6E697567650W15

DTC

C1414

ABS (ABS/TCS) HU/CM mismatched installation

DETECTION 

CONDITION

• Detection of situation where vehicle-type or drive system input signal and ABS (ABS/TCS) HU/CM 

information  remains incongruent through CAN information.

POSSIBLE 

CAUSE

• Mismatched installation of ABS (ABS/TCS) HU/CM

STEP

INSPECTION

ACTION

1

INSPECT ABS (ABS/TCS) UNIT FOR 
MISMATCHED INSTALLATION

• Verify ABS (ABS/TCS) HU/CM part number.

• Has a ABS (ABS/TCS) HU/CM with the 

correct part number been installed?

Yes

Go to next step.

No

Replace with correct ABS (ABS/TCS) unit part number, then 
go to Step 3.

2

Configulate ABS (ABS/TCS) HU/CM

• Does ABS (ABS/TCS) HU/CM configulate 

properly?

Yes

Go to next step.

No

Replace ABS (ABS/TCS) HU/CM

3

VERIFY TROUBLESHOOTING COMPLETED

• Make sure to reconnected all disconnect 

connectors.

• Clear DTC from memory.

(See 

P–46 Clearing DTCs Procedures

)

• Is same DTC present?

Yes

Replace ABS (ABS/TCS) HU/CM, then go to next step.

No

Go to next step.

4

VERIFY AFTER REPAIR PROCEDURE

• Is there any other DTC present?

Yes

Go to applicable DTC inspection.

No

Troubleshooting completed.

DTC

C1508

TCS control

DETECTION 

CONDITION

• TCS control continues operation for 60 seconds or more

POSSIBLE 

CAUSE

• System is normal

For protection of solenoid valves in the ABS/TCS HU/CM, or protection of the engine, sustained and 
continual control of TCS is inhibited

STEP

INSPECTION

ACTION

1

VERIFY CURRENT STATUS OF 
MALFUNCTION

• Clear DTC from memory

(See 

P–46 Clearing DTCs Procedures

)

• Start engine and drive vehicle at 10 km/h 

{6.2 mph} or above.

• Is same DTC present?

Yes

Replace ABS/TCS HU/CM, then go to next step.

No

Inspect intermittent concern using the same procedure as 
engine control system.

2

VERIFY AFTER REPAIR PROCEDURE

• Is there any other DTC present?

Yes

Go to applicable DTC inspection.

No

Troubleshooting completed.

DTC

C1510
C1511
C1512
C1513

RF solenoid valve, motor or RF wheel-speed sensor/sensor rotor
LF solenoid valve, motor or LF wheel-speed sensor/sensor rotor
RR solenoid valve, motor or RR wheel-speed sensor/sensor rotor
LR solenoid valve, motor or LR wheel-speed sensor/sensor rotor

DETECTION 

CONDITION

• Wheel lock is detected during ABS operation (pressure reduction inoperative).

• Pressure reduction on a single wheel continues for more than 20 seconds.

POSSIBLE 

CAUSE

• Malfunction of solenoid valve in ABS (ABS/TCS) HU/CM

• Malfunction of wheel-speed sensor

• Damaged sensor rotor

• Stuck pump motor in ABS (ABS/TCS) HU/CM

ON-BOARD DIAGNOSTIC (ABS/TCS) 

P–65

P

Diagnostic procedure

End Of Sie

DTC U2021

A6E697567650W16

Note

• To warm up the engine completely, idle the engine and wait for more than 5 minutes.

Diagnostic procedure

End Of Sie

STEP

INSPECTION

ACTION

1

VERIFY OTHER DTC HAS BEEN RECORDED

• Has any ABS wheel-speed sensor, sensor 

rotor, solenoid valve, pump motor, or motor  
relay related DTC been output?

Yes

Go to applicable DTC inspection.

No

Go to next step.

2

INSPECT ABS (ABS/TCS) HU/CM 
OPERATION

• Perform ABS (ABS/TCS) HU/CM system 

inspection.
(See 

P–27 ABS (ABS/TCS) HU/CM 

SYSTEM INSPECTION

•  Is it okay?

Yes

Go to next step.

No

Replace ABS (ABS/TCS) HU/CM, then go to next step.

3

VERIFY CURRENT STATUS OF 
MALFUNCTION

• Clear DTC from memory.

(See 

P–46 Clearing DTCs Procedures

)

• Start engine and drive vehicle at 10 km/h 

{6.2 mph} or above at least one minute.

• Gradually slow down and stop vehicle.

• Is same DTC present?

Yes

Replace ABS (ABS/TCS) HU/CM, then go to next step.

No

Go to next step.

4

VERIFY AFTER REPAIR PROCEDURE

• Is there any other DTC present?

Yes

Go to applicable DTC inspection.

No

Troubleshooting completed.

DTC

U2021

Engine coolant temperature

DETECTION 

CONDITION

• After engine is warmed up, engine coolant temperature is 0 °C {32 °F} or less, and TCS operation is 

inhibited by PCM.

POSSIBLE 

CAUSE

• System is normal. When engine coolant temperature rises, TCS operation is executed by PCM.

STEP

INSPECTION

ACTION

1

CHECK WHETHER ENGINE HAS WARMED 
UP

• Has engine warmed up?

Yes

Go to next step.

No

Warm up the engine.
If TCS OFF light goes out, system is normal.

2

VERIFY THAT MALFUNCTION SYMPTOM 
OCCURS AFTER ENGINE IS WARMED UP

• Warm up the engine.

• Is TCS indicator light also illuminated and 

DTC C1119 obtained?

Yes

Go to DTC C1119 chart.

No

If TCS OFF light goes out, system is normal.
If TCS OFF light does not goes out, go to next step.

3

VERIFY TROUBLESHOOTING COMPLETED

• Clear DTC from memory.

(See 

P–46 Clearing DTCs Procedures

)

• Is same DTC present?

Yes

Replace ABS (ABS/TCS) HU/CM, then go to next step.

No

Go to next step.

4

VERIFY AFTER REPAIR PROCEDURE

• Is there any other DTC present?

Yes

Go to applicable DTC inspection.

No

Troubleshooting completed.

P–66

ON-BOARD DIAGNOSTIC (DYNAMIC STABILITY CONTROL) 

DSC SYSTEM WIRING DIAGRAM

A6E697367650W01

.

ON-BOARD DIAGNOSTIC (DYNAMIC STABILITY CONTROL)

A6E6920T005

1

IG switch

2

SUS  15A  fuse

3

ABS 60 A fuse

4

Meter

5

ABS warning light

6

Brake system warning light

ON-BOARD DIAGNOSTIC (DYNAMIC STABILITY CONTROL) 

P–67

P

End Of Sie

DSC ON-BOARD DIAGNOSIS

A6E697367650W02

On-Board Diagnostic (OBD) Test Description

1. (See 

P–46 ABS (ABS/TCS) ON-BOARD DIAGNOSIS

)

DTC Table

7

DSC OFF light

8

DSC indicator light

9

CAN  driver

10

Battery

11

Cruise actuator

12

DSC OFF switch

13

DLC-2

14

CAN-H

15

CAN-L

16

Wheel-speed sensor

17

Combine sensor

18

Steering angle sensor

19

Brake switch

20

Brake light

21

Back-up light switch (MTX only)

22

Back-up light

23

Audio unit, Wiper and washer switch, 
Car-navegation unit, Auto leveling control unit

DTC

Diagnosis system component

Page

WDS or 

equiva-

lent

B1318

DSC power supply

(See 

P–72 DTC B1318

)

B1342

DSC HU/CM

(See 

P–74 DTC B1342

)

B1483

Stop switch signal

(See 

P–74 DTC B1483, B1484, B1486

)

B1484

Stop switch signal

(See 

P–74 DTC B1483, B1484, B1486

)

B1486

Stop switch signal

(See 

P–74 DTC B1483, B1484, B1486

)

B1627

Reverse signal

(See 

P–76 DTC B1627

)

B2477

Module configuration

(See 

P–77 DTC B2477

)

C1095

Motor relay, pump motor

(See 

P–77 DTC C1095, C1096

)

C1096

Motor relay, pump motor

(See 

P–77 DTC C1095, C1096

)

C1119

Engine control system

(See 

P–79 DTC C1119

)

C1125

Brake fluid level sensor

(See 

P–80 DTC C1125

)

C1140

DSC HU (pump)

(See 

P–81 DTC C1140

)

C1145

Right front wheel-speed sensor

(See 

P–81 DTC C1145, C1155, C1165, C1175

)

C1148

Right front wheel-speed sensor/sensor rotor

(See 

P–83 DTC C1148, C1158, C1168, C1178, 

C1233, C1234, C1235, C1236

)

C1155

Left front wheel-speed sensor

(See 

P–81 DTC C1145, C1155, C1165, C1175

)

C1158

Left front wheel-speed sensor/sensor rotor

(See 

P–83 DTC C1148, C1158, C1168, C1178, 

C1233, C1234, C1235, C1236

)

C1165

Right rear wheel-speed sensor

(See 

P–81 DTC C1145, C1155, C1165, C1175

)

C1168

Right rear wheel-speed sensor/sensor rotor

(See 

P–83 DTC C1148, C1158, C1168, C1178, 

C1233, C1234, C1235, C1236

)

C1175

Left rear wheel-speed sensor

(See 

P–81 DTC C1145, C1155, C1165, C1175

)

C1178

Left rear wheel-speed sensor/sensor rotor

(See 

P–83 DTC C1148, C1158, C1168, C1178, 

C1233, C1234, C1235, C1236

)

C1186

Fail-safe relay

(See 

P–86 DTC C1186, C1266

)

C1194

Left front pressure reduction solenoid valve

(See 

P–87 DTC C1194, C1198, C1210, C1214, 

C1242, C1246, C1250, C1254, C1400, C1410, 
C1957, C1958

)

C1198

Left front pressure retention solenoid valve

(See 

P–87 DTC C1194, C1198, C1210, C1214, 

C1242, C1246, C1250, C1254, C1400, C1410, 
C1957, C1958

)

C1210

Right front pressure reduction solenoid valve

(See 

P–87 DTC C1194, C1198, C1210, C1214, 

C1242, C1246, C1250, C1254, C1400, C1410, 
C1957, C1958

)

C1214

Right front pressure retention solenoid valve

(See 

P–87 DTC C1194, C1198, C1210, C1214, 

C1242, C1246, C1250, C1254, C1400, C1410, 
C1957, C1958

)

C1233

Left front wheel-speed sensor/sensor rotor

(See 

P–83 DTC C1148, C1158, C1168, C1178, 

C1233, C1234, C1235, C1236

)