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Dynamic Stability Control: Diagnosis Mazda 6 GH рестайлинг

Anti-Lock/traction Control 6 illustrations ~666 words

DSC HU/CM INSPECTION

  1. Disconnect the DSC HU/CM connector. (See «DSC HU/CM REMOVAL/INSTALLATION»(ref-448644-S17012199952012012000000) .)
  2. Connect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [MZR 2.5]»(ref-448588-S09156724152012012000000) .) (See «BATTERY REMOVAL/INSTALLATION [MZI 3.7 V6]»(ref-448609-S21137111942012012000000) .)
  3. Attach the tester lead to the DSC HU/CM wiring harness-side connector, then inspect the voltage, continuity, or resistance according to the standard (reference) on the table.

Scheme 14

Scheme 14: Terminal Voltage Table (Reference)
Scheme 14: Terminal Voltage Table (Reference)
TerminalSignal nameConnected toMeasured itemMeasured terminal (measured condition)StandardInspection item (s)
AGround (system)Ground pointContinuityA-ground pointContinuity detectedWiring harness (A-ground point)
BGround (ABS motor)Ground pointContinuityB-ground pointContinuity detectedWiring harness (B-ground point)
CBrake switchBrake switchContinuityC-brake switch terminalContinuity detectedWiring harness (C-brake switch)
DCAN_LDLC-2 (CAN_L)This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
ECAN_HDLC-2 (CAN_H)This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
FCAN2_LSAS control moduleThis terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
GCAN2_HSAS control moduleThis terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
H
1LR wheel-speed sensor (-)LR ABS wheel-speed sensorContinuityI-LR ABS wheel-speed sensor connector terminal AContinuity detectedWiring harness (I-LR ABS wheel-speed sensor connector terminal A)
JRR wheel-speed sensor (-)RR ABS wheel-speed sensorContinuityJ-RR ABS wheel-speed sensor connector terminal AContinuity detectedWiring harness (J-RR ABS wheel-speed sensor connector terminal A)
K
LLR wheel-speed sensor (+)LR ABS wheel-speed sensorContinuityL-LR ABS wheel-speed sensor connector terminal BContinuity detectedWiring harness (L-LR ABS wheel-speed sensor connector terminal B)
MRR wheel-speed sensor (+)RR ABS wheel-speed sensorContinuityM-RR ABS wheel-speed sensor connector terminal BContinuity detectedWiring harness (M-RR ABS wheel-speed sensor connector terminal B)
N
0RF wheel-speed sensor (-)RF ABS wheel-speed sensorContinuityO-RF ABS wheel-speed sensor connector terminal AContinuity detectedWiring harness (O-RF ABS wheel-speed sensor connector terminal A)
PLF wheel-speed sensor (-)LF ABS wheel-speed sensorContinuityP-LF ABS wheel-speed sensor connector terminal AContinuity detectedWiring harness (P-LF ABS wheel-speed sensor connector terminal A)
Q
RRF wheel-speed sensor (+)RF ABS wheel-speed sensorContinuityR-RF ABS wheel-speed sensor connector terminal BContinuity detectedWiring harness (R-RF ABS wheel-speed sensor connector terminal B)
SLF wheel-speed sensor (+)LF ABS wheel-speed sensorContinuityS-LF ABS wheel-speed sensor connector terminal BContinuity detectedWiring harness (S-LF ABS wheel-speed sensor connector terminal B)
TDSC OFF switchDSC OFF switchContinuityT-DSC OFF switchContinuity detectedWiring harness (T-DSC OFF switch)
U
V
W
X
Y
Z
AA
AB
AC
AD
AE
AFPower supply (system)IgnitionVoltageSwitch the ignition to ON.B+Wiring harness (AF-ignition)
Switch the ignition to off.1 V or less
AGPower supply (solenoid operation)BatteryVoltageUnder any conditionB+Wiring harness (AG-battery)
AHPower supply (ABS motor operation)BatteryVoltageUnder any conditionB+Wiring harness (AH-battery)

TERMINAL VOLTAGE REFERENCE CHART

Sensor Output Value Inspection

CAUTIONPerforming the resistance inspection using a tester 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 (IDS) to the DLC-2.
  3. Select the following PIDs using the M-MDS: WSPD_LF (LF wheel-speed sensor) WSPD_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.
  1. If there is any malfunction, replace the ABS wheel-speed sensor.

Installation Visual Inspection

  1. Inspect the following items
  1. If there is any malfunction, replace the applicable part.
  1. Is there any looseness or play?
  2. Has the sensor been deformed?

Preparation prior to inspection

  1. Remove the ABS wheel-speed sensor. (See «FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION»(ref-448644-S05655087842012012000000) .)
  2. Remove the wheel hub, steering knuckle component. (See «WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION»(ref-448642-S11179492542012012000000) .)
  3. Install the ABS wheel-speed sensor to the removed wheel hub, steering knuckle component, and tighten to the specified torque.

Tightening torque

8-12 N.m {82-122 kgf.cm, 71-106 in.lbf}

Scheme 15

Scheme 15
Scheme 15

Clearance Inspection

  1. Measure the gap between the ABS sensor rotor and ABS wheel-speed sensor using a feeler gauge.
  1. If not within the specification, verify the following items and repair or replace if necessary.
  1. Is there deformation or damage to the ABS sensor rotor?
  2. Is there deformation or damage to the ABS wheel speed sensor?
  3. Is there foreign material adhering?

Clearance

0.6-1.5 mm {0.03-0.05 in}

Scheme 16

Scheme 16
Scheme 16

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-448642-S11179492542012012000000) .)
  3. Install the ABS wheel-speed sensor. (See «FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION»(ref-448644-S05655087842012012000000) .)
  4. Inspect the front wheel alignment. (See «FRONT WHEEL ALIGNMENT»(ref-448641-S00683034522012012000000) .)
  1. Inspect the following items
  1. If there is any malfunction, replace the applicable part.
  1. Is there looseness or play in the sensor installation?
  2. Has the sensor been deformed?
  3. Is there deformation of or damage to the ABS sensor rotor?
  1. Remove the rear ABS wheel-speed sensor.
  2. Measure the distance between the rear ABS wheel-speed sensor installation surface and the rear ABS sensor rotor. This is dimension A.
  3. Calculate the clearance between the rear ABS wheel-speed sensor and the ABS sensor rotor using the following formula: Clearance (mm {in}) = A-15 mm {0.59 in}
  4. Verify that the clearance between the ABS sensor rotor and the rear ABS wheel-speed sensor is as indicated below.
  1. If there is any malfunction, verify the installation condition and replace if necessary.

Clearance

0.3-1.1 mm {0.02-0.04 in}

Scheme 17

Scheme 17
Scheme 17
CAUTIONPerforming the resistance inspection using a tester may cause damage to the ASS 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 (IDS) to the DLC-2.
  3. Select the following PIDs using the M-MDS: WSPD_LR (LR wheel-speed sensor) WSPD_RR (RR 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.
  1. If there is any malfunction, replace the ABS wheel-speed sensor.

Scheme 18

Scheme 18: BRAKE FLUID PRESSURE SENSOR INSPECTION
Scheme 18: BRAKE FLUID PRESSURE SENSOR INSPECTION

Scheme 19

Scheme 19
Scheme 19
  1. Switch the ignition to off.
  2. Disconnect the brake pipe.
  3. Remove the brake hose (LF).
  4. Remove the bracket.
  5. Install the SSTs to the brake pipe as shown in the illustration.
  6. Perform air bleeding of the SST and brake fine from bleeder screw A.
  7. Connect the M-MDS (IDS) to the DLC-2.
  8. Select the "MCYLI_P" PID. (See «ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)]»(ref-448572-S14766025222012012000000) .)
  9. Start the engine.
  10. Depress the brake pedal, and verify that the fluid pressure value of the SST (gauge) and the value shown on the M-MDS are equal. If the fluid pressure values are different, replace the DSC HU/CM. (See «DSC HU/CM REMOVAL/INSTALLATION»(ref-448644-S17012199952012012000000) .)
  11. Remove the SSTs after the inspection and install the bracket, brake hose and brake pipe to their original positions. (See «BRAKE HOSE (FRONT) REMOVAL/INSTALLATION»(ref-448589-S16606715252012012000000) .)
  12. Perform air bleeding of the brake line. (See «BRAKE FLUID AIR BLEEDING»(ref-448589-S19422875872012012000000) .)

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