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Special Tools Required
Front
19-92ABS Components
Wheel Speed Sensor Replacement
A
B
C9.8 N·m
(1.0 kgf·m,
7.2 lbf·ft)
Guide pin tool 07AAG-SVBA100
1. Turn the ignition switch to LOCK (0).
2. Release the connector clamp (A), then disconnect the wheel speed sensor connector (B).
3. Remove the clips, the bolt, and the wheel speed sensor (C).
4. Install the wheel speed sensor in the reverse order of removal, and note these items: Install the sensor carefully to avoid twisting the wires.
If the wheel speed sensor comes in contact with the wheel bearing, it is faulty. Investigate the cause beforereplacing the sensor.
5. Start the engine, and make sure the ABS indicator goes off.
6. Test-drive the vehicle, and make sure the ABS indicator does not come on.
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Rear
19-93
Right side
9.8 N·m
(1.0 kgf·m,
7.2 lbf·ft) A
B
C
1. Turn the ignition switch to LOCK (0).
2. Release the connector clamp (A), then disconnect the wheel speed sensor connector (B).
3. Remove the clips, the bolt, and the wheel speed sensor (C). (cont’d)
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19-94ABS Components
Wheel Speed Sensor Replacement (cont’d)
B
A
A
07AAG-SVBA100 B
07AAG-SVBA100
A
4. Apply multi-purpose grease to the wheel speedsensor O-ring (A) and the sensor hole in the knuckle
(B).
5. Insert the guide pin tool (A) into the wheel speed sensor bolt hole until the shoulder of the tool
contacts the wheel speed sensor bracket.
NOTE: To prevent O-ring damage, the wheel speed
sensor must be installed with the guide pin tool. 6. Insert the wheel speed sensor (A) and the guide pin
tool (B) into the bolt hole on the knuckle.
NOTE: To ensure proper alignment when pushing
the wheel speed sensor into the knuckle housing,
do not hold the sensor bracket during installation,
hold the sensor wire.
7. Gently push and pull the wheel speed sensor in and out to make sure the O-ring is sliding properly in its
housing. While you are doing this, make sure the
sensor doesn’t come out of the knuckle assembly. If
the sliding effort is too high, remove the wheel
speed sensor, inspect the O-ring for damage, and
start the installation process again.
8. Remove the guide pin tool, then install the bolt, and tighten it to specified torque.
9. Clean the mating surfaces between the brake disc and the inside of the wheel, then install the front
wheel.
10. Start the engine, and make sure the ABS indicators go off.
11. Test-drive the vehicle, and make sure the ABS indicators do not come on.
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19-96VSA System Components
Component Location Index
DATA LINK CONNECTOR (DLC)
UNDER-HOOD FUSE/RELAY BOX
VSA MODULATOR-CONTROL UNIT UNDER-DASH FUSE/RELAY BOX
LEFT-FRONT WHEEL SPEED SENSOR STEERING ANGLE SENSOR
VSA OFF SWITCHRIGHT-REAR WHEEL SPEED SENSOR
YAW RATE-LATERAL
ACCELERATION SENSOR WHEEL BEARING
(MAGNETIC ENCODER) HUB BEARING UNIT
(MAGNETIC ENCODER)
RIGHT-FRONT WHEEL SPEED SENSOR WHEEL BEARING
(MAGNETIC ENCODER) LEFT-REAR WHEEL SPEED SENSOR
HUB BEARING UNIT
(MAGNETIC ENCODER)
Removal and Installation, page 19-171 Replacement, page 19-173Replacement, page 19-168
Test, page 19-170Replacement, page 19-174
Replacement, page 19-169 Replacement, page 18-18 Replacement, page 18-32
Replacement, page 19-173 Replacement, page 18-18 Replacement, page 19-174
Replacement, page 18-32
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System IndicatorABS Indicator
Brake System Indicator
VSA Indicator
VSA Activation Indicator
19-97
General Troubleshooting Information
A
D B
C
This system has four indicators:
ABS indicator (A)
Brake system indicator (B)
VSA indicator (C)
VSA activation indicator (D)
When the system is OK, each indicator comes on for
about 2 seconds after turning the ignition switch to
ON (II), then goes off.
When the system detects a problem, a DTC is set and,
depending upon the failure, the VSA modulator-control
unit determines which indicator(s) are turned on. If the
problem goes away (system returns to normal), the
indicator(s) are controlled in the following way
depending upon the DTC that is set: The indicator(s) come on and stay on when the ignition switch is ON (II).
The indicator(s) automatically go off.
The indicator(s) go off after the vehicle is driven. The ABS indicator comes on when the ABS function is
lost. The brakes still work like a conventional system.
The brake system indicator comes on when the EBD
function is lost, the parking brake is applied, and/or the
brake fluid level is low.
NOTE: If two or more wheel speed sensors fail, the
brake system indicator comes on.
The VSA indicator comes on when the VSA function is
lost.
The VSA activation indicator blinks when the VSA
function is activating. The VSA activation indicator
comes on and stays on when the VSA is turned OFF by
using the VSA OFF switch, or when the VSA function is
lost.
(cont’d)
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Diagnostic Trouble Code (DTC)
Self-diagnosis
Kickback
Pump Motor
Brake Fluid Replacement/Air BleedingHow to Troubleshoot DTCs
Intermittent Failures
19-98
VSA System Components
General Troubleshooting Information (cont’d)
The memory holds all DTCs. However, when the
same DTC is detected more than once, the more
recent DTC is written over the earlier one. Therefore,
when the same problem is detected repeatedly, it is
memorized as a single DTC.
The DTCs are indicated in the order they occur.
The DTCs are memorized in the EEPROM. Therefore, the memorized DTCs cannot be erased by
disconnecting the battery. Do the specified
procedures to clear the DTCs.
Self-diagnosis can be classified into two categories: – Initial diagnosis: Done right after the ignition switch is turned to ON (II) and until the ABS and VSA
indicators go off.
– Regular diagnosis: Done right after the initial diagnosis until the ignition switch is turned to
LOCK (0).
When the system detects a problem, the VSA modulator-control unit shifts to fail-safe mode.
The pump motor operates when the VSA modulator-
control unit is functioning, and the fluid in the reservoir
is forced out to the master cylinder, causing kickback at
the brake pedal. The pump motor operates when the VSA modulator- control unit is functioning.
The VSA modulator-control unit checks the pump motor operation one time after completing initial
diagnosis during regular diagnosis when the vehicle
is driven over 15 km/h (10 mph).
Brake fluid replacement and air bleeding procedures
are identical to the procedures used on vehicles without
the VSA system (see page 19-9). The troubleshooting procedures assume that the cause
of the problem is still present, and the ABS and/or VSA
indicator is still on. Following a troubleshooting
procedure for a code that has been cleared but does not
reset can result in incorrect diagnosis.
1. Question the client about the conditions when the problem occurred, and try to reproduce the same
conditions for troubleshooting. Find out when the
ABS and/or VSA indicator came on, such as during
activation, after activation, when the vehicle was
traveling at a certain speed, etc. If necessary, have
the client demonstrate the concern.
2. When the ABS or VSA indicator does not come on during the test-drive, check for loose connectors,
poor contact of the terminals, etc. in the circuit
indicated by the DTC before you start
troubleshooting.
3. After troubleshooting, or the repairs are done, clear the DTCs, and test-drive the vehicle under the same
conditions that originally set the DTCs. Make sure
the ABS and VSA indicators do not come on.
4. Check for DTCs from other systems which are connected via F-CAN. If there are DTCs that are
related to F-CAN, one possible cause was that the
ignition switch was turned to ON (II) with the VSA
modulator-control unit connector disconnected.
Clear the DTCs. Check for fuel and emissions DTC’s
first.
NOTE: Always troubleshoot fuel and emissions
DTC’s first.
The term ‘‘intermittent failure’’ means a system may
have had a failure, but it checks OK now. If you cannot
reproduce the condition, check for loose connectors or
terminal pins related to the circuit that you are
troubleshooting.
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How to Use the HDS (Honda Diagnostic
System)How to Retrieve DTCs
How to Clear DTCs
19-99
A
1. If the system indicators stay on, connect the HDS to
the data link connector (DLC) (A) located under the
driver’s side of the dashboard.
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the vehicle and the VSA modulator-control unit. If it doesn’t,
troubleshoot the DLC circuit (see page 11- 204).
4. Check the diagnostic trouble code (DTC) for all systems, troubleshoot the powertrain DTCs first
and note it. Then refer to the indicated DTC’s
troubleshooting, and do the appropriate
troubleshooting procedure.
NOTE: The HDS communication stops when the vehicle speed is at 50 km/h (31 mph) or more.
The HDS reads the DTC, current data, and other system data.
For specific operations, refer to the Help menu that came with the HDS. 1. With the ignition switch in LOCK (0), connect the
HDS to the data link connector (DLC) under the
driver’s side of the dashboard.
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the vehicle and the VSA modulator-control unit. If it doesn’t
troubleshoot the DLC circuit (see page 11-204).
4. Follow the prompts on the HDS to display the DTC(s) on the screen. After determining the DTC,
refer to the DTC troubleshooting. Do the all
systems DTC check, and troubleshoot any
powertrain DTCs first.
5. Turn the ignition switch to LOCK (0).
1. With the ignition switch in LOCK (0), connect the HDS to the data link connector (DLC) under the
driver’s side of the dashboard.
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the vehicle and the VSA modulator-control unit. If it doesn’t
troubleshoot the DLC circuit (see page 11-204).
4. Clear the DTC(s) by following the screen prompts on the HDS.
5. Turn the ignition switch to LOCK (0).
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DTCDetection Item ABS
Indicator Brake
System
Indicator VSA
Indicator VSA
Activation Indicator Note
19-100VSA System Components
DTC Troubleshooting Index
11 -13 Right-front Wheel Speed Sensor Circuit Malfunction ON ON/OFF ON ON (see page 19-117)
12 -11 Right-front Wheel Speed Sensor Electrical Noise or
Intermittent Interruption ON ON/OFF ON ON (see page 19-120)
-12 Right-front Wheel Speed Sensor Short to the Other Sensor Circuit ON ON/OFF ON ON (see page 19-121)
-21 Right-front Wheel Speed Sensor Installation Error ON ON/OFF ON ON (see page 19-123)
-22 Right-front Wheel Speed Sensor Installation Error (30 km/h (19 mph) or More) ON ON/OFF ON ON (see page 19-124)
-23 Right-front Wheel Speed Sensor Installation Error (0 to 15 km/h (0 to 9 mph)) ON ON/OFF ON ON (see page 19-124)
13 -13 Left-front Wheel Speed Sensor Circuit Malfunction ON ON/OFF ON ON (see page 19-117)
14 -11 Left-front Wheel Speed Sensor Electrical Noise or Intermittent Interruption ON ON/OFF ON ON (see page 19-120)
-12 Left-front Wheel Speed Sensor Short to the Other Sensor Circuit ON ON/OFF ON ON (see page 19-121)
-21 Left-front Wheel Speed Sensor Installation Error ON ON/OFF ON ON (see page 19-123)
-22 Left-front Wheel Speed Sensor Installation Error (30 km/h (19 mph) or More) ON ON/OFF ON ON (see page 19-124)
-23 Left-front Wheel Speed Sensor Installation Error (0 to 15 km/h (0 to 9 mph)) ON ON/OFF ON ON (see page 19-124)
15 -13 Right-rear Wheel Speed Sensor Circuit Malfunction ON ON/OFF ON ON (see page 19-117)
16 -11 Right-rear Wheel Speed Sensor Electrical Noise or Intermittent Interruption ON ON/OFF ON ON (see page 19-120)
-12 Right-rear Wheel Speed Sensor Short to the Other Sensor Circuit ON ON/OFF ON ON (see page 19-121)
-21 Right-rear Wheel Speed Sensor Installation Error ON ON/OFF ON ON (see page 19-123)
-22 Right-rear Wheel Speed Sensor Installation Error (30 km/h (19 mph) or More) ON ON/OFF ON ON (see page 19-124)
-23 Right-rear Wheel Speed Sensor Installation Error (0 to 15 km/h (0 to 9 mph)) ON ON/OFF ON ON (see page 19-124)
17 -13 Left-rear Wheel Speed Sensor Circuit Malfunction ON ON/OFF ON ON (see page 19-117)
18 -11 Left-rear Wheel Speed Sensor Electrical Noise or Intermittent Interruption ON ON/OFF ON ON (see page 19-120)
-12 Left-rear Wheel Speed Sensor Short to the Other Sensor Circuit ON ON/OFF ON ON (see page 19-121)
-21 Left-rear Wheel Speed Sensor Installation Error ON ON/OFF ON ON (see page 19-123)
-22 Left-rear Wheel Speed Sensor Installation Error (30 km/h (19 mph) or More) ON ON/OFF ON ON (see page 19-124)
-23 Left-rear Wheel Speed Sensor Installation Error (0 to 15 km/h (0 to 9 mph)) ON ON/OFF ON ON (see page 19-124)
21 -11 Right-front Magnetic Encoder (Wheel Bearing) Malfunction (Pulse Missing) ON ON/OFF ON ON (see page 19-125)
22 -11 Left-front Magnetic Encoder (Wheel Bearing) Malfunction (Pulse Missing) ON ON/OFF ON ON (see page 19-125)
23 -11 Right-rear Magnetic Encoder (Wheel Bearing) Malfunction (Pulse Missing) ON ON/OFF ON ON (see page 19-125)
24 -11 Left-rear Magnetic Encoder (Wheel Bearing) Malfunction (Pulse Missing) ON ON/OFF ON ON (see page 19-125)
1: Brake system indicator turns ON when two or more wheels fail.1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
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