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Home/Mazda/CX-5/Mazda CX-5 I (2011-2015)/Repair manual/Anti-Lock/traction Control/Dynamic Stability Control System: Diagnosis
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Dynamic Stability Control System: Diagnosis Mazda CX-5 I

Anti-Lock/traction Control 11 illustrations ~1091 words

DSC HU/CM INSPECTION

  1. Disconnect the DSC HU/CM connector. (See «DSC HU/CM REMOVAL/INSTALLATION»(ref-615419-S41948531792014051000000) ).
  2. Connect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
  3. Attach the tester lead to the DSC HU/CM wiring harness-side connector and inspect voltage, continuity, or resistance according to the standard (reference) on the table.

Identifying DSC HU/CM Wiring Harness Side Connector. Scheme 12

Scheme 12: Identifying DSC HU/CM Wiring Harness Side Connector
Scheme 12: Identifying DSC HU/CM Wiring Harness Side Connector
TerminalSignal nameConnected toMeasured itemMeasured terminal (measurement condition)StandardInspection item(s)
APower supply (solenoid operation)BatteryVoltageUnder any conditionB+Wiring harness (A-battery)
BPower supply (motor operation)BatteryVoltageUnder any conditionB+Wiring harness (B-battery)
CRF wheel-speed (-)RF ABS wheel-speed sensorContinuityC-RF ABS wheel-speed sensor terminal BContinuity detectedWiring harness (C-RF ABS wheel-speed sensor terminal B)
D
E
FRF wheel-speed (+)RF ABS wheel-speed sensorContinuityF-RF ABS wheel-speed sensor terminal AContinuity detectedWiring harness (F-RF ABS wheel-speed sensor terminal A)
G
H
I
J
K
LLR wheel-speed (+)LR ABS wheel-speed sensorContinuityL-LR ABS wheel-speed sensor terminal AContinuity detectedWiring harness (L-LR ABS wheel-speed sensor terminal A)
M
N
OLR wheel-speed (-)LR wheel-speed sensorContinuityO-LR ABS wheel-speed sensor terminal BContinuity detectedWiring harness (O-LR ABS wheel-speed sensor terminal B)
PCAN2_LSAS control moduleThis terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
QPower supply (system)Ignition switchVoltageIgnition switched ON (engine off).B+Wiring harness (Q-ignition switch)
Switch the ignition to off.1 V or less
R
SCAN2_HSAS control moduleThis terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
T
U
V
W
XRR wheel-speed (-)RR ABS wheel-speed sensorContinuityX-RR ABS wheel-speed sensor terminal BContinuity detectedWiring harness (X-RR ABS wheel-speed sensor terminal B)
Y
Z
AARR wheel-speed (+)RR ABS wheel-speed sensorContinuityAA-RR ABS wheel-speed sensor terminal AContinuity detectedWiring harness (AA-RR ABS wheel-speed sensor terminal A)
AB
ACCAN_LCAN moduleThis terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
AD
AE
AFCAN_HCAN moduleThis terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
AGLF wheel-speed sensor(+)LF ABS wheel-speed sensorContinuityAG-LF ABS wheel-speed sensor terminal AContinuity detectedWiring harness (AG-LF ABS wheel-speed sensor terminal A)
AH
AI
AJLF wheel-speed sensor (-)LF wheel-speed sensorContinuityAJ-LF ABS wheel-speed sensor terminal BContinuity detectedWiring harness (AJ-LF ABS wheel-speed sensor terminal B)
AK
ALGroundGround pointContinuityAL-ground pointContinuity detectedWiring harness (AL-ground point)

Scheme 13

Scheme 13: FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION
Scheme 13: FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION
  1. Remove the mudguard. (See «MUDGUARD REMOVAL/INSTALLATION»(ref-615433-S03927761162014051000000) ).
  2. Remove in the order indicated in the table.
  3. Install in the reverse order of removal.
  4. After installation, verify that there is no twisting in the front ABS wheel-speed sensor. (Scheme 13): Identifying Front ABS Wheel Speed Sensor, Connector And Bolt With Torque Specification

Sensor Output Value Inspection

CAUTIONResistance inspection using other testers may cause damage to the ABS wheel-speed sensor internal circuit. Be sure to use the M-MDS to inspect the ABS wheel-speed sensor.
  1. Switch the ignition to off.
  2. Connect the M-MDS to the DLC-2.
  3. Select the following PIDs using the M-MDS: WSPD_SEN_LF (LF wheel-speed sensor) WSPD_SEN_RF (RF wheel-speed sensor)
  4. Start the engine and drive the vehicle.
  5. Verify that the display of the M-MDS shows the same value as the speedometer. If there is any malfunction, replace the ABS wheel-speed sensor.

Installation Visual Inspection

  1. Inspect for the following: If there is any malfunction, replace the part. Excessive play of the ABS wheel-speed sensor Deformation of the ABS wheel-speed sensor Deformation or damage of the ABS sensor rotor

Scheme 14

Scheme 14: Preparation prior to inspection
Scheme 14: Preparation prior to inspection
  1. Remove the ABS wheel-speed sensor. (See «FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION»(ref-615419-S14818230392014051000000) ).
  2. Remove the wheel hub and steering knuckle as a single unit. (See «WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION»(ref-615454-S40613878432014051000000) ).
  3. Install the ABS wheel-speed sensor to the removed wheel hub, steering knuckle component, and tighten to the specified torque. Tightening torque 8-10 N.m {82-101 kgf.cm, 71-88 in.lbf} (Scheme 14): Identifying Installation Bolt

Scheme 15

Scheme 15: Clearance Inspection
Scheme 15: Clearance Inspection
  1. Measure the gap between the ABS sensor rotor and ABS wheel-speed sensor using a feeler gauge. If not within the specification, verify the following items and repair or replace if necessary. Is there deformation or damage to the ABS sensor rotor? Is there deformation or damage to the ABS wheel speed sensor? Is there foreign material adhering? Clearance 0.87-1.53 mm {0.035-0.060 in} (Scheme 15): Measuring Gap Between ABS Sensor Rotor And Wheel Speed Sensor Using Feeler Gauge

Servicing after inspection

  1. Remove the ABS wheel-speed sensor from the wheel hub, steering knuckle component.
  2. Install the wheel hub, steering knuckle component. (See «WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION»(ref-615454-S40613878432014051000000) ).
  3. Install the ABS wheel-speed sensor. (See «FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION»(ref-615419-S14818230392014051000000) ).
  4. Inspect the front wheel alignment. (See «FRONT WHEEL ALIGNMENT»(ref-615434-S26623192832014051000000) ).

Scheme 16

Scheme 16: REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION
Scheme 16: REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION

Scheme 17

Scheme 17
Scheme 17
  1. Remove the trunk board. (See «TRUNK BOARD REMOVAL/INSTALLATION»(ref-615455-S29131302172014051000000) ).
  2. Remove the trunk end trim. (See «TRUNK END TRIM REMOVAL/INSTALLATION»(ref-615455-S40973116952014051000000) ).
  3. Remove the rear scuff plate. (See «REAR SCUFF PLATE REMOVAL/INSTALLATION»(ref-615455-S30956965972014051000000) ).
  4. Remove the trunk side trim. (See «TRUNK SIDE TRIM REMOVAL/INSTALLATION»(ref-615455-S22359050062014051000000) ).
  5. Disconnect the rear ABS wheel-speed sensor connector.
  6. Press the rear ABS wheel-speed sensor tabs and press out the sensor toward the outside of the vehicle.
  7. Remove in the order indicated in the table.
  8. Install in the reverse order of removal.
  9. After installation, verify that there is no twisting in the rear ABS wheel-speed sensor. (Scheme 16): Removing Rear ABS Wheel Speed Sensor (Scheme 17): Identifying Rear ABS Wheel-speed Sensor Bolt With Torque Specification
  1. Inspect the following items: If there is any malfunction, replace the applicable part. Excessive play of the ABS wheel-speed sensor Deformation of the ABS wheel-speed sensor

Scheme 18

Scheme 18: Clearance Inspection
Scheme 18: Clearance Inspection
  1. Remove the ABS wheel-speed sensor.
  2. Measure the distance between the ABS wheel-speed sensor installation surface and the ABS sensor rotor. This is dimension A.
  3. Calculate the clearance between the front ABS wheel-speed sensor and the ABS sensor rotor using the following formula: Clearance (mm {in}) = A-14 {0.55}
  4. Verify that the clearance between the ABS sensor rotor and the ABS wheel-speed sensor is as indicated below. If there is any malfunction, replace it. Clearance 0.28-1.17 mm {0.012-0.046 in} (Scheme 18): Identifying Clearance Between Front ABS Wheel Speed Sensor And ABS Sensor Rotor (2WD)
  1. Switch the ignition to off.
  2. Connect the M-MDS to the DLC-2.
  3. Select the following PIDs using the M-MDS: WSPD_SEN_LR (LR ABS wheel-speed sensor) WSPD_SEN_RR (RR ABS wheel-speed sensor)
  4. Start the engine and drive the vehicle.
  5. Verify that the display of the M-MDS shows the same value as the speedometer. If there is any malfunction, replace the ABS wheel-speed sensor.
  1. Inspect the following items: If there is any malfunction, replace the applicable part. Excessive play of the ABS wheel-speed sensor Deformation of the ABS wheel-speed sensor Deformation or damage of the ABS sensor rotor

Scheme 19

Scheme 19: Clearance Inspection
Scheme 19: Clearance Inspection
  1. Remove the ABS wheel-speed sensor.
  2. Measure the distance between the ABS wheel-speed sensor installation surface and the ABS sensor rotor. This is dimension A.
  3. Calculate the clearance between the front ABS wheel-speed sensor and the ABS sensor rotor using the following formula: Clearance (mm {in}) = A-34.35 {1.352}
  4. Verify that the clearance between the ABS sensor rotor and the ABS wheel-speed sensor is as indicated below. If there is any malfunction, replace it. Clearance 0.3-1.4 mm {0.02-0.05 in} (Scheme 19): Identifying Clearance Between Front ABS Wheel Speed Sensor And ABS Sensor Rotor (AWD)
  1. Switch the ignition to off.
  2. Connect the M-MDS to the DLC-2.
  3. Select the following PIDs using the M-MDS: WSPD_SEN_LR (LR ABS wheel-speed sensor) WSPD_SEN_RR (RR ABS wheel-speed sensor)
  4. Start the engine and drive the vehicle.
  5. Verify that the display of the M-MDS shows the same value as the speedometer. If there is any malfunction, replace the ABS wheel-speed sensor.

Scheme 20

Scheme 20: BRAKE FLUID PRESSURE SENSOR INSPECTION
Scheme 20: BRAKE FLUID PRESSURE SENSOR INSPECTION

Scheme 21

Scheme 21
Scheme 21

Scheme 22

Scheme 22
Scheme 22
  1. Switch the ignition to off.
  2. Remove the clips.
  3. Set the splash shield out of the way. (Scheme 20): Identifying Brake Fluid Pressure Sensor Clips
  4. Disconnect the brake pipe from the LF brake hose.
  5. Remove the clip.
  6. Remove the LF brake hose from the bracket.
  7. Detach the brake pipe from the pipe holder. (Scheme 21): Identifying Brake Hose, Pipe Holder And Clip
  8. Install the SST to the brake pipe as shown in the figure.
  9. Bleed the brake line and the SSTs of air. Bleed the air form the SSTs using bleeder screw A.
  10. Connect the M-MDS to the DLC-2.
  11. Select the "BRK_F_P_R" PID.
  12. Start the engine.
  13. Depress the brake pedal, and confirm that the fluid pressure value of the SST (Gauge) and the value shown on the M-MDS are equal If the fluid pressures are different, replace the DSC HU/CM. (See «DSC HU/CM REMOVAL/INSTALLATION»(ref-615419-S41948531792014051000000) ).
  14. After the inspection, remove the SSTs, install the brake hose, clamp, and brake pipe to the original positions, and then bleed the air from the brake line. (See «BRAKE HOSE (FRONT) REMOVAL/INSTALLATION»(ref-615413-S15399149352014051000000) ). (See «BRAKE FLUID AIR BLEEDING»(ref-615413-S33446886702014051000000) ). (Scheme 22): Installing SST To Brake Pipe

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