Acura CSX. Manual — part 406
SNR9AC7K801000R2621FAAT00
SNR9AC7K801000R2622FAAT00
−
−
−
−
−
−
DTC 26-21:
DTC 26-23:
DTC 26-22:
YES
NO
YES
NO
YES
NO
19-129
19-129
Lateral Acceleration Sensor
Neutral Position Malfunction
Lateral Acceleration Sensor
Circuit Intermittent Interruption
Lateral Acceleration Sensor Stuck
NOTE: While doing this troubleshooting, avoid
vibrations or shaking the vehicle.
1. Park the vehicle on a flat and level surface.
2. Turn the ignition switch to ON (II).
3. Clear the DTC with the HDS.
4. Turn the ignition switch to LOCK (0), then turn it to
ON (II) again.
5. Wait 60 seconds or more.
6. 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.
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 LATERAL
ACCELERATION SENSOR 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).
Is DT C 26-21 or 26-23 indicated?
Is DT C 26-22 indicated?
Does the indicated value change?
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01
SNR9AC7K801000R2711FAAT00
−
−
−
−
DTC 27-11:
DTC 27-26:
YES
NO
YES
NO
19-130
VSA System Components
STEERING ANGLE SENSOR 5P CONNECTOR
STR-D (BLU)
Steering Angle Sensor DIAG
Signal Error (Initial)
Steering Angle Sensor DIAG
Signal Error (Main)
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.
Go to step 5.
Intermittent failure, the system is OK at this
time. Check for loose terminals between the
steering angle sensor 5P 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. Disconnect the steering angle sensor 5P connector.
7. Disconnect the VSA modulator-control unit 37P
connector (see step 2 on page 19-171).
8. Check for continuity between steering angle sensor
5P connector terminal No. 3 and body ground.
Repair short to body ground in the wire
between the steering angle sensor and the VSA
modulator-control unit.
Go to step 9.
Wire side of female terminals
Is DT C 27 -11 or 27 -26 indicated?
Is ther e continuity?
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02
03
−
−
−
−
Sign
YES
NO
YES
NO
VSA Modulator-
control Unit 37P
Connector Terminal
Steering Angle
Sensor 5P
Connector Terminal
19-131
VSA MODULATOR-CONTROL UNIT 37P CONNECTOR
STEERING ANGLE SENSOR 5P CONNECTOR
STR-D
(BLU)
SVCC
(ORN) SGND (BRN)
SVCC
(ORN)
STR-D (BLU)
SGND (BRN)
STEERING ANGLE SENSOR 5P CONNECTOR
STR-D (BLU)
9. Check for continuity between the VSA modulator-
control unit 37P connector terminal and the
steering angle sensor 5P connector terminal
individually (see table).
STR-D
No. 3
No. 3
SVCC
No. 7
No. 5
SGND
No. 10
No. 1
Go to step 10.
Repair open in the wire between the steering
angle sensor and the VSA modulator-control
unit.
10. Turn the ignition switch to ON (II).
11. Measure the voltage between steering angle
sensor 5P connector terminal No. 3 and body
ground.
Repair short to power in the wire between
the steering angle sensor and the VSA modulator-
control unit.
Replace the steering angle sensor (see page
19-168).
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is ther e 0.1 V or mor e?
08/08/21 15:05:54 61SNR030_190_0131
+
−
01
SNR9AC7K801000R2721FAAT00
−
−
−
−
DTC 27-21:
DTC 27-22:
YES
NO
YES
NO
19-132
VSA System Components
STEERING ANGLE SENSOR 5P CONNECTOR
STR-A (GRN)
STR-B (PUR)
Steering Angle Sensor Stuck
Neutral Position
Steering Angle Sensor Stuck
Offset Position
1. Turn the ignition switch to ON (II).
2. Turn the steering wheel left and right 90 degrees or
more. Check the STEERING ANGLE in the VSA
DATA LIST with the HDS.
Intermittent failure, the system is OK at this
time. Check for loose terminals between the
steering angle sensor 5P connector and the VSA
modulator-control unit 37P connector. Refer to
intermittent failures troubleshooting (see page
19-98).
Go to step 3.
3. Turn the ignition switch to LOCK (0).
4. Disconnect the steering angle sensor 5P connector.
5. Disconnect the VSA modulator-control unit 37P
connector (see step 2 on page 19-171).
6. Check for continuity between body ground and
steering angle sensor 5P connector terminals No. 2
and No. 4 individually.
Repair short to body ground in the wire
between the steering angle sensor and the VSA
modulator-control unit.
Go to step 7.
Wire side of female terminals
Is ther e
90 ° or mor e, and
90 ° or less?
Is ther e continuity?
08/08/21 15:05:54 61SNR030_190_0132
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