2004 DAEWOO NUBIRA brake sensor

4E2 – 8IREAR DRUM BRAKES
DAEWOO V–121 BL4
Installation Procedure
1. Install the wheel cylinder to the backing plate with
the wheel cylinder bolt.
Tighten
Tighten the wheel cylinder–to–backing plate bolt to 8
NSm (71 lb–in).
2. Connect the brake line to the wheel cylinder.
Tighten
Tighten the brake line to 16 NSm (12 lb–ft)
3. Install the shoe and lining, and the brake drum. Re-
fer to ”Shoe and Lining” in this section.
4. Bleed the brakes. Refer to Section 4A, Hydraulic
Brakes.
BACKING PLATE
Removal Procedure
1. Raise and suitably support the vehicle.
2. Remove the brake shoe components, including
complete removal of the parking brake with the re-
tainer. Refer to ”Shoe and Lining” in this section
and Section 4A, Hydraulic Brakes.
3. Remove the nuts that secure the wheel hub assem-
bly to the backing plate.
4. Remove the brake line and plug the opening in the
line to prevent fluid loss or contamination.
5. Remove the wheel cylinder assembly. Refer to
”Wheel Cylinder Assembly” in this section.
6. Remove the wheel hub assembly.
7. In case of ABS brake, disconnect the cable that
goes to the wheel speed sensor.
8. Separate the backing plate and the gasket.

SECTION : 4F
ANTILOCK BRAKE SYSTEM
CAUTION : Disconnect the negative battery cable before removing or installing any electrical unit or when a tool
or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable will help
prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless otherwise noted.
TABLE OF CONTENTS
SPECIFICATIONS4F–2 . . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 4F–2. . . . . . . . . .
SPECIAL TOOLS4F–2 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Special Tools Table 4F–2. . . . . . . . . . . . . . . . . . . . . . . .
SCHEMATIC AND ROUTING DIAGRAMS4F–3 . . . . .
Abs System Circuit (I) 4F–3. . . . . . . . . . . . . . . . . . . . . .
Abs System Circuit (II) 4F–4. . . . . . . . . . . . . . . . . . . . .
Ebcm Connector Face View 4F–5. . . . . . . . . . . . . . . . .
COMPONENT LOCATOR4F–6 . . . . . . . . . . . . . . . . . . . .
ABS/EBD System Drive 4F–6. . . . . . . . . . . . . . . . . . . .
DIAGNOSIS4F–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Circuit Check 4F–7. . . . . . . . . . . . . . . . . . .
ABS Indicator Lamp Inoperative 4F–9. . . . . . . . . . . . .
Power Supply to Control Module,
No DTCs Stored 4F–12. . . . . . . . . . . . . . . . . . . . . . . .
ABS Indicator Lamp Illuminated Continuously,
No DTCs Stored 4F–16. . . . . . . . . . . . . . . . . . . . . . . .
Electronic Brake–Force Distribution (EBD)
System Indicator Lamp Inoperative 4F–18. . . . . . . .
SELF–DIAGNOSTICS 4F–22. . . . . . . . . . . . . . . . . . . .
DISPLAYING DTCs 4F–22. . . . . . . . . . . . . . . . . . . . . . .
CLEARING DTCs 4F–22. . . . . . . . . . . . . . . . . . . . . . . .
INTERMITTENTS AND POOR
CONNECTIONS 4F–22. . . . . . . . . . . . . . . . . . . . . . . .
DTC C0035 Left Front Wheel Speed Sensor
Circuit Malfunction 4F–23. . . . . . . . . . . . . . . . . . . . . .
DTC C0040 Right Front Wheel Speed Sensor
Circuit Malfunction 4F–26. . . . . . . . . . . . . . . . . . . . . .
DTC C0045 Left Rear Wheel Speed Sensor
Circuit Malfunction 4F–29. . . . . . . . . . . . . . . . . . . . . .
DTC C0050 Right Rear Wheel Speed Sensor
Circuit Malfunction 4F–32. . . . . . . . . . . . . . . . . . . . . .
DTC C0060/C0065 Left Front Inlet and
Outlet Valve Solenoid Fault 4F–35. . . . . . . . . . . . . . .
DTC C0070/C0075 Right Front Inlet and
Outlet Valve Solenoid Fault 4F–37. . . . . . . . . . . . . . . DTC C0080/C0085 Left Rear Inlet and
Outlet Valve Solenoid Fault 4F–39. . . . . . . . . . . . . . .
DTC C0090/C0095 Right Rear Inlet and
Outlet Valve Solenoid Fault 4F–41. . . . . . . . . . . . . . .
DTC C0110 Pump Motor Circuit Malfunction 4F–43. .
DTC C0121 Valve Relay Circuit Malfunction 4F–45. .
DTC C0161 ABS Brake Switch Circuit
Malfunction 4F–47. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC C0245 Wheel Speed Sensor Frequency
Error 4F–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC C0550 ABS Control Module Internal
Fault 4F–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC C0800 Low Voltage Fault 4F–56. . . . . . . . . . . . .
DTC C0931 Overheated 4F–59. . . . . . . . . . . . . . . . . . .
MAINTENANCE AND REPAIR4F–60 . . . . . . . . . . . . . .
ON–VEHICLE SERVICE 4F–60. . . . . . . . . . . . . . . . . . . .
Service Precautions 4F–60. . . . . . . . . . . . . . . . . . . . . . .
Bleeding System 4F–61. . . . . . . . . . . . . . . . . . . . . . . . .
ABS 5.3 Assembly 4F–61. . . . . . . . . . . . . . . . . . . . . . . .
Front Wheel Speed Sensor 4F–62. . . . . . . . . . . . . . . .
Front Wheel Speed Sensor Jumper Harness 4F–63.
Rear Wheel Speed Sensor 4F–64. . . . . . . . . . . . . . . . .
GENERAL DESCRIPTION AND SYSTEM
OPERATION4F–65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic Knowledge Required 4F–65. . . . . . . . . . . . . . . . .
ABS System Components 4F–65. . . . . . . . . . . . . . . . .
Base Braking Mode 4F–65. . . . . . . . . . . . . . . . . . . . . . .
Antilock Braking Mode 4F–66. . . . . . . . . . . . . . . . . . . . .
EBD System 4F–69. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronic Brake–Force Distribution (EBD) Failure
Matrix 4F–70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tires and ABS/EBD 4F–71. . . . . . . . . . . . . . . . . . . . . . .
Electronic Brake Control Module (EBCM) 4F–71. . . .
Front Wheel Speed Sensors 4F–71. . . . . . . . . . . . . . .
Front Wheel Speed Sensor Rings 4F–71. . . . . . . . . . .
Rear Wheel Speed Sensors and Rings 4F–71. . . . . .
Valve Relay and Pump Motor Relay 4F–71. . . . . . . . .

4F – 2IANTILOCK BRAKE SYSTEM
DAEWOO V–121 BL4
Wiring Harness 4F–71. . . . . . . . . . . . . . . . . . . . . . . . . . . Indicators 4F–71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
ApplicationNSmLb–FtLb–In
ABS 5.3 Mounting Nuts1511–
Brake Pipe Nuts2216–
Front Wheel Speed Sensor Bolt8–71
SPECIAL TOOLS
SPECIAL TOOLS TABLE
Scan Tool

ANTILOCK BRAKE SYSTEM 4F – 3
DAEWOO V–121 BL4
SCHEMATIC AND ROUTING DIAGRAMS
ABS SYSTEM CIRCUIT (I)
1
12
2
C111 1 2 2
E B C M
19
16 1418
B+
B+1576 54
G106
10A
62C202 BRN
BRN
BRN
BRN
BRNF11
Hot in Run and Start
6C110 C107 C107
40 C202
60A
1
6C105
C102
RED ORN/
BLK
RED RED
RED
Ground IGN+
Ground LT B L U Brake
Switch2
4Ef215AEf13
Hot at All Times
4330
C201 C201
J3B14F01
11
11
S301
2 WHT GRYGRY
WHT GRY
WHT PPL
YEL
WHTWHT
RED
BRN BRN
BLK BLK
DK
BLUBRN LT
BLU
1
21 4 5
10 89 3
31
C110
43
12
C30214C202
LT B L U LT B L U LT B L U
LT B L U
RR/LH
Wheel Speed SensorRR/RH BLK/WHT
G106
BLK
61
C201
76
C201
17
Oil feeding
Connector
”2”Ter
Oil feeding
Connector
”4”Ter
FRT/LHWheel Speed Sensor
FRT/RH
1C110

ANTILOCK BRAKE SYSTEM 4F – 5
DAEWOO V–121 BL4
EBCM CONNECTOR FACE VIEW
EBCM Connector
PinColorCircuit
1WHTRight Rear Ground
2BRNRight Rear Sensor
3PPLRight Front Ground
4–Not Used
5YELRight Front Sensor
6WHTLeft Front Ground
7ORNLeft Front Sensor
8REDLeft Rear Ground
9BLKLeft Rear Sensor
10–Not Used
11DK BLU/
WHTData Link Connector
(DLC)
12–Not Used
13–Not Used
14YELBrake Lamp Switch
15PNKSwitched Ignition
16BLKMotor Ground
PinColorCircuit
17REDBattery
18REDBattery
19BLK/WHTInstrument Ground
20LT GRNABS Warning Lamp
21BRN/WHTEBD Warning Lamp
(Parking Brake Lamp)
22–Not Used
23–Not Used
24–Not Used
25–WSS Output Signal
26–Not Used
27–Not Used
28–Not Used
29–Not Used
30–Not Used
31–Not Used
SB–Shorting Bar

4F – 6IANTILOCK BRAKE SYSTEM
DAEWOO V–121 BL4
COMPONENT LOCATOR
ABS/EBD SYSTEM DRIVE
(Left–Hand Drive Shown, Right–Hand Drive Similar)
1. Right Front Wheel Speed Sensor
2. Brake Master Cylinder
3. Master Cylinder Reservoir
4. Grommet
5. Right Front Wheel Speed Sensor Connector
6. Brake Fluid Level Switch Connector
7. Instrument Cluster
8. Connector C302
9. Right Rear Wheel Speed Sensor Connector
10. Right Rear Wheel Speed Sensor
11. Left Rear Wheel Speed Sensor12. Left Rear Wheel Speed Sensor Connector
13. Body Wiring Harness
14. Connector C202
15. Connectors C110
16. EBCM Connector
17. Left Front Speed Sensor Connector
18. Grommet
19. Hydraulic Modulator with Attached EBCM
20. Connector C107
21. Left Front Wheel Speed Sensor

ANTILOCK BRAKE SYSTEM 4F – 23
DAEWOO V–121 BL4
J3B14F05
Left Front
Wheel Speed
Sensor
EBCM
LH BLU BRN1
2
76
DIAGNOSTIC TROUBLE CODE (DTC) C0035
LEFT FRONT WHEEL SPEED SENSOR CIRCUIT
MALFUNCTION
Circuit Description
The toothed wheel generates a voltage pulse as it moves
past the sensor. Each tooth–gap–tooth series on the
wheel generates the pulses. The electronic brake control
module (EBCM) uses the frequency of these pulses to de-
termine the wheel speed. The voltage generated depends
on the air gap between the sensor and the toothed wheel,
and on the wheel speed.
Diagnosis
This procedure checks for a malfunctioning wheel speed
sensor, a short to ground or to voltage in the wiring, or a
contact problem in a connector.
Cause(s)
S The wheel speed sensor is defective or discon-
nected.
S There is a problem in the wiring.
S There is a problem with a connector.
S There is a problem in the toothed ring.
S Wrong installed WSS.
S Wrong sensor signal.
S Signal noise via WSS.
Fail Action
ABS action is disabled, and the ABS warning lamp is ON.
EBD is enabled. (Refer to the EBD failure matrix in this
section).
Test Description
The number(s) below refer to step(s) on the diagnostic
table.1. This step begins an examination for a defective
wheel speed sensor.
6. This step tests the wiring for a short to voltage.
8. This step tests the wiring for a short to ground.
10. This step tests for an open or a high resistance in
the wiring.
Diagnostic Aids
Be sure that the speed sensor wiring is properly routed and
retained. This will help to prevent false signals due to the
pickup of electrical noise.
It is very important to perform a thorough inspection of the
wiring and the connectors. Failure to inspect the wiring
and the connectors carefully and completely may result in
misdiagnosis, causing part replacement with the reap-
pearance of the malfunction.
You can use the scan tool to monitor wheel speeds during
a road test. Watch the wheel speeds being displayed on
the scan tool to see if any of the readings is unusual, such
as one sensor varying in speed from the other three, a sig-
nal going intermittently high or low, etc. If this does not
identify the intermittent, wet the speed sensor harness on
the underside of the vehicle and perform a road test, moni-
toring the wheel speeds with the scan tool.
Important : If the WSS signal fault input to the EBCM, the
ABS warning lamp turns on. As if a sensor signal fault can
be removed by the scan tool, the ABS warning lamp
doesn’t turn off. In order to turn ABS warning lamp off, you
should driver a car up to 12 km/h.

4F – 24IANTILOCK BRAKE SYSTEM
DAEWOO V–121 BL4
DTC C0035 – Left Front Wheel Speed Sensor Circuit Malfunction
StepActionValue(s)YesNo
1Examine the wheel speed sensor.
Are there any signs of physical damage?–Go to Step 3Go to Step 2
21. Turn the ignition switch to LOCK.
2. Disconnect the left front wheel speed sensor
connector.
3. Use a digital voltmeter (DVM) to measure the
resistance between the sensor terminals.
Is the resistance within the specified value at
approximately 25°C (77°F)?1280–1920 WGo to Step 4Go to Step 3
3Replace the wheel speed sensor.
Is the repair complete?–System OK–
41. Switch the DVM to the AC millivolt range.
2. Measure the voltage output of between the
wheel speed sensor terminals while rotating
the wheel about 1 revolution every 2 seconds.
Is the output within the specified value?
120 vGo to Step 6Go to Step 5
5Replace the speed sensor or the toothed wheel as
required.
Is the repair complete?–System OK–
61. Disconnect the harness from the EBCM.
2. Connect a DVM between ground and one ter-
minal of the wheel speed connector.
3. Turn the ignition to ON.
4. Repeat the above test for the other terminal of
the wheel speed connector.
Is the voltage for either of these terminals within the
specified value?> 1 vGo to Step 7Go to Step 8
7Repair the short to voltage in the affected circuit.
Is the repair complete?–System OK–
81. Turn the ignition switch to LOCK.
2. Measure the resistance to ground from termi-
nal 6 at the harness EBCM connector.
3. Measure the resistance to ground from termi-
nal 7 at the harness EBCM connector.
Is the resistance at either circuit less than the speci-
fied value?Go to Step 9Go to Step 10
9Repair the short to ground in the affected circuit.
Is the repair complete?–System OK–
101. Measure the resistance between terminal 6 at
the harness EBCM connector and the harness
wheel speed sensor connector terminal con-
nected to the WHT wire.
2. Measure the resistance between terminal 7 at
the harness EBCM connector and the harness
wheel speed sensor connector terminal con-
nected to the ORN wire.
Is the resistance on either circuit within the specified
value?> 5 WGo to Step 11Go to Step 12