Acura CSX. Manual — part 405
SNR9AC7K801000R2111FAAT00
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DTC 21-11:
DTC 22-11:
DTC 23-11:
DTC 24-11:
YES
NO
DTC
Appropriate
Magnetic
Encoder
Note
YES
NO
19-125
Right-front Magnetic Encoder
(Wheel Bearing) Malfunction (Pulse Missing)
Left-front Magnetic Encoder
(Wheel Bearing) Malfunction (Pulse Missing)
Right-rear Magnetic Encoder
(Wheel Bearing) Malfunction (Pulse Missing)
Left-rear Magnetic Encoder
(Wheel Bearing) Malfunction (Pulse Missing)
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Test-drive the vehicle at 20 km/h (13 mph) or more,
and go a distance of 100 m (328 ft) or more.
NOTE: Drive the vehicle on the road, not on a lift.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the system is OK at this
time. Check for loose terminals between the wheel
speed sensor 2P connector and the VSA modulator-
control unit 37P connector. Refer to intermittent
failures troubleshooting (see page 19-98).
5. Turn the ignition switch to LOCK (0).
6. Inspect the appropriate magnetic encoder for
damage, debris, and correct installation.
21-11
Right-front
Remove the
driveshaft outboard
joint from the
appropriate wheel
hub (see page 18-15).
22-11
Left-front
23-11
Right-rear
Remove the hub
bearing unit
(see page 18-32).
24-11
Left-rear
Remove the debris from the magnetic
encoder, or replace the wheel bearing (front) or the
hub bearing unit (rear):
• Front: Replace the front wheel bearing (see page
18-18).
• Rear: Replace the rear hub bearing unit (see page
18-32).
Clean off debris from the appropriate
magnetic encoder surface on the wheel bearing or
the hub bearing unit, then go to step 1, and recheck.
If the DTC is still present, replace the appropriate
wheel bearing or hub bearing unit.
Is DT C 21-11, 22-11, 23-11, and/ or 24-11
indicated?
Is the magnetic encoder sur f ace OK ?
08/08/21 15:05:53 61SNR030_190_0125
SNR9AC7K801000R2511FAAT00
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DTC 25-11:
DTC 25-12:
DTC 25-13:
DTC 25-16:
DTC 25-18:
DTC 25-21:
DTC 26-11:
DTC 26-12:
DTC 26-13:
YES
NO
19-126
VSA System Components
Yaw Rate Sensor Internal Circuit
Malfunction (Initial)
Yaw Rate Sensor Internal Circuit
Malfunction (Open, Short)
Yaw Rate Sensor Communication
Error
Yaw Rate/Lateral Acceleration
Sensor Internal Circuit Malfunction (Keep
Alive Memory (KAM) Error)
Yaw Rate/Lateral Acceleration
Sensor Internal Circuit Malfunction
Yaw Rate Sensor Neutral Position
Malfunction
Lateral Acceleration Sensor
Internal Circuit Malfunction (Initial)
Lateral Acceleration Sensor
Internal Circuit Malfunction (Open, Short)
Lateral Acceleration Sensor
Communication Error
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it to
ON (II) again.
4. Check for DTCs with the HDS.
Replace the yaw rate-lateral acceleration
sensor (see page 19-169).
Intermittent failure, the system is OK at this
time.
Is DT C 25-11, 25-12, 25-13, 25-16, 25-18, 25-21,
26-11, 26-12, or 26-13 indicated?
08/08/21 15:05:53 61SNR030_190_0126
SNR9AC7K801000R2514FAAT00
SNR9AC7K801000R2519FAAT00
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−
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DTC 25-14:
DTC 25-15:
DTC 25-17:
DTC 25-19:
DTC 25-23:
YES
NO
YES
NO
19-127
19-127
Yaw Rate/Lateral Acceleration
Sensor Circuit High Voltage
Yaw Rate/Lateral Acceleration
Sensor Circuit Low Voltage
Yaw Rate/Lateral Acceleration
Sensor Power Source Voltage Malfunction
Yaw Rate/Lateral Acceleration
Sensor Startup Time Malfunction
Yaw Rate Sensor Circuit
Intermittent Interruption
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it to
ON (II) again.
4. Check for DTCs with the HDS.
If DTC 61-01, 61-21, 61-22, 61-23, and/or
62-21 is indicated at the same time, check the
battery performance (see page 22-67), and do the
alternator and regulator circuit troubleshooting first
(see page 4-28). If DTC 61-01, 61-21, 61-22, 61-23,
and/or 62-21 is not indicated at the same time,
replace the yaw rate-lateral acceleration sensor
(see page 19-169).
Intermittent failure, the system is OK at this
time.
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it to
ON (II) again.
4. Wait 60 seconds or more.
5. Check for DTCs with the HDS.
Replace the yaw rate-lateral acceleration
sensor (see page 19-169).
Intermittent failure, the system is OK at this
time.
Is DT C 25-14, 25-15, or 25-17 indicated?
Is DT C 25-19 or 25-23 indicated?
08/08/21 15:05:53 61SNR030_190_0127
SNR9AC7K801000R2522FAAT00
SNR9AC7K801000R2524FAAT00
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−
−
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DTC 25-22:
DTC 25-24:
DTC 25-25:
DTC 26-24:
DTC 26-25:
YES
NO
YES
NO
YES
NO
19-128
19-128
VSA System Components
Yaw Rate Sensor Stuck
Yaw Rate Sensor Gain Low
Yaw Rate Sensor Gain High
Lateral Acceleration Sensor Gain
Low
Lateral Acceleration Sensor Gain
High
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Test-drive the vehicle at 10 km/h (7 mph) or more.
NOTE: Drive the vehicle on the road, not on a lift.
4. Check for DTCs with the HDS.
Go to step 5.
If any other DTCs are indicated, go to the
indicated DTCs troubleshooting. If DTCs are not
indicated, there was an intermittent failure, the
system is OK at this time.
5. Test-drive the vehicle. Check the YAW RATE S in
the VSA DATA LIST with the HDS while driving in
corners.
Intermittent failure, the system is OK at this
time.
Replace the yaw rate-lateral acceleration
sensor (see page 19-169).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Test-drive the vehicle at 15 km/h (10 mph) or more.
NOTE: Drive the vehicle on the road, not on a lift.
4. Check for DTCs with the HDS.
Replace the yaw rate-lateral acceleration
sensor (see page 19-169).
Intermittent failure, the system is OK at this
time.
Is DT C 25-22 indicated?
Does the indicated value change?
Is DT C 25-24, 25-25, 26-24, or 26-25 indicated?
08/08/21 15:05:54 61SNR030_190_0128
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