Acura CSX. Manual — part 414
02
03
−
−
−
−
YES
NO
YES
NO
19-161
YAW RATE-LATERAL ACCELERATION SENSOR
5P CONNECTOR
YEL
YAW RATE-LATERAL ACCELERATION SENSOR
5P CONNECTOR
BLK
9. Turn the ignition switch to ON (II).
10. Measure the voltage between yaw rate-lateral
acceleration sensor 5P connector terminal No. 1
and body ground.
Go to step 11.
Check the No. 4 (7.5 A) fuse in the under-dash
fuse/relay box. If the fuse is OK, repair open in the
wire between the No. 4 (7.5 A) fuse and yaw rate-
lateral acceleration sensor.
11. Turn the ignition switch to LOCK (0).
12. Reconnect the yaw rate-lateral acceleration sensor
5P connector.
13. Turn the ignition switch to ON (II).
14. Measure the voltage between yaw rate-lateral
acceleration sensor 5P connector terminal No. 5
and body ground.
Replace the yaw rate-lateral acceleration
sensor (see page 19-169).
Repair open in the wire between the yaw rate-
lateral acceleration sensor and body ground
(G602).
Wire side of female terminals
Wire side of female terminals
Is ther e batter y voltage?
Is ther e 0.1 V or less?
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SNR9AC7K801000S0722FAAT00
SNR9AC7K801000S0821FAAT02
−
−
−
−
−
−
DTC 107-22:
DTC 108-21:
YES
NO
YES
NO
YES
NO
19-162
19-162
VSA System Components
Central Processing Unit (CPU)
Internal Circuit Malfunction
Steering Angle Sensor
Malfunction
1. Turn the ignition switch to LOCK (0) to cool the VSA
modulator-control unit, and wait 1 hour or more.
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. Check for DTCs with the HDS.
Replace the VSA modulator-control unit
(see page 19-171).
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.
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.
5. Turn the ignition switch to LOCK (0).
6. Substitute a known-good steering angle sensor
(see page 19-168).
7. Turn the ignition switch to ON (II).
8. Clear the DTC with the HDS.
9. Test-drive the vehicle.
NOTE: Drive the vehicle on the road, not on a lift.
10. Check for DTCs with the HDS.
Replace the VSA modulator-control unit
(see page 19-171).
Replace the original steering angle sensor
(see page 19-168).
Is DT C 107 -22 indicated?
Is DT C 108-21 indicated?
Is DT C 108-21 indicated?
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01
02
03
SNR9AC7K801000S1201FAAT01
+
−
−
−
−
−
−
DTC 112-01:
YES
NO
YES
NO
YES
NO
19-163
VSA MODULATOR-CONTROL UNIT 37P CONNECTOR
FSR
B (WHT)
VSA MODULATOR-CONTROL UNIT 37P CONNECTOR
IG1 (GRY)
VSA MODULATOR-CONTROL UNIT 37P CONNECTOR
IG1 (GRY)
Central Processing Unit (CPU)
Internal Circuit Malfunction
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0).
4. Disconnect the VSA modulator-control unit 37P
connector (see step 2 on page 19-171).
5. Measure the voltage between VSA modulator-
control unit 37P connector terminal No. 13 and
body ground.
Go to step 6.
Check the battery performance (see page
22-67), and troubleshoot the alternator and
regulator circuit (see page 4-28).
6. Measure the voltage between VSA modulator-
control unit 37P connector terminal No. 28 and
body ground.
Go to step 7.
Repair short to power in the wire between the
No. 4 (7.5 A) fuse in the under-dash fuse/relay box
and the VSA modulator-control unit.
7. Turn the ignition switch to ON (II).
8. Measure the voltage between VSA modulator-
control unit 37P connector terminal No. 28 and
body ground.
Check for loose terminals in the VSA
modulator-control unit 37P connector. If necessary,
substitute a known-good VSA modulator-control
unit (see page 19-171), and retest.
Repair open in the wire between the No. 4
(7.5 A) fuse in the under-dash fuse/relay box and
the VSA modulator-control unit.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e batter y voltage?
Is ther e 0 V ?
Is ther e batter y voltage?
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SNR9AC7K801000S21XXFAAT02
−
−
DTC 121-xx :
DTC 122-xx :
DTC 123-xx :
DTC 124-xx :
DTC
Sectional
Valve
YES
NO
19-164
VSA System Components
VSA Solenoid Valve
Malfunction
VSA Solenoid Valve
Malfunction
VSA Solenoid Valve
Malfunction
VSA Solenoid Valve
Malfunction
: Any two-character subcode (see table)
121
-01
Right-front and
left-rear
Regulator
-02
-11
-21
-24
122
-01
Suction
-21
-22
-23
123
-01
Left-front and
right-rear
Regulator
-02
-11
-21
-24
124
-01
Suction
-21
-22
-23
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 VSA modulator-control unit
(see page 19-171).
Intermittent failure, the system is OK at this
time.
Is DT C 121-xx, 122-xx, 123-xx, or 124-xx
indicated?
08/08/21 15:06:44 61SNR030_190_0164
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