Acura CSX. Manual — part 403

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０１

ＳＮＲ９ＡＣ７Ｋ８０１０００Ｒ１１１３ＦＡＡＴ００

＋

＋

＋

＋

−

−

−

−

DTC 11-13:

DTC 13-13:

DTC 15-13:

DTC 17-13:

YES

NO

DTC

VSA Modulator-control Unit 37P

Connector Terminal

YES

NO

19-117

DTC Troubleshooting

VSA MODULATOR-CONTROL UNIT 37P CONNECTOR

FR

B (GRN)

RL-GND (PUR)

FR-GND (PNK)

RR

B (LT GRN)

RL

B (YEL)

FL

B (WHT)

RR-GND (BLU)

FL-GND (RED)

Right-front Wheel Speed Sensor

Circuit Malfunction

Left-front Wheel Speed Sensor

Circuit Malfunction

Right-rear Wheel Speed Sensor

Circuit Malfunction

Left-rear Wheel Speed Sensor

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), 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 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. Disconnect the VSA modulator-control unit 37P

connector (see step 2 on page 19-171).

7. Disconnect the appropriate wheel speed sensor 2P

connector.

8. Check for continuity between the appropriate VSA

modulator-control unit 37P connector wheel speed
sensor

B and GND terminals (see table).

11-13

No. 19

No. 6

13-13

No. 22

No. 11

15-13

No. 9

No. 21

17-13

No. 20

No. 8

Repair short in the wires between the

appropriate wheel speed sensor and the VSA
modulator-control unit.

Go to step 9.

Wire side of female terminals

Is DT C 11-13, 13-13, 15-13, and/ or 17 -13
indicated?

Is ther e continuity?

08/08/21 15:04:57 61SNR030_190_0117

＊０１

＊０２

＋

＋

＋

＋

＋

＋

＋

＋

−

−

−

−

DTC

YES

NO

DTC

YES

NO

VSA Modulator-
control Unit 37P

Connector Terminal

Appropriate Wheel

Speed Sensor 2P

Connector Terminal

VSA Modulator-
control Unit 37P

Connector Terminal

Appropriate Wheel

Speed Sensor 2P

Connector Terminal

19-118

VSA System Components

RR

B (LT GRN)

FL

B (WHT)

FR

B (GRN)

RL

B (YEL)

RR

B

(LT BLU)

FL

B

(WHT)

FR

B

(GRN)

RL

B

(YEL)

LEFT-
REAR

RIGHT-
FRONT

RIGHT-
REAR

LEFT-
FRONT

WHEEL SPEED SENSOR 2P CONNECTOR

VSA MODULATOR-CONTROL UNIT 37P CONNECTOR

FL-GND
(RED)

RR-GND
(GRY)

RL-GND
(RED)

FR-GND
(PNK)

RIGHT-
FRONT

LEFT-
REAR

LEFT-
FRONT

RIGHT-
REAR

WHEEL SPEED SENSOR 2P CONNECTOR

VSA MODULATOR-CONTROL UNIT 37P CONNECTOR

FL-GND (RED)

RR-GND (BLU)

RL-GND (PUR)

FR-GND (PNK)

9. Check for continuity between the appropriate VSA

modulator-control unit 37P connector terminal and
the wheel speed sensor 2P connector terminal (see
table).

11-13

No. 9

Right-front

13-13

No. 22

Left-front

15-13

No. 9

Right-rear

17-13

No. 20

Left-rear

Go to step 10.

Repair open in the wire between the

appropriate wheel speed sensor and the VSA
modulator-control unit.

10. Check for continuity between the appropriate VSA

modulator-control unit 37P connector terminal and
the wheel speed sensor 2P connector terminal (see
table).

11-13

No. 6

Right-front

13-13

No. 11

Left-front

15-13

No. 21

Right-rear

17-13

No. 8

Left-rear

Go to step 11.

Repair open in the wire between the

appropriate wheel speed sensor and the VSA
modulator-control unit.

Wire side of female terminals

Terminal side of female terminals

Wire side of female terminals

Terminal side of female terminals

Is ther e continuity?

Is ther e continuity?

08/08/21 15:04:58 61SNR030_190_0118

０４

０６

＋

＋

＋

＋

＋

＋

＋

＋

−

−

−

−

DTC

VSA Modulator-control Unit 37P

Connector Terminal

YES

NO

DTC

VSA Modulator-control Unit 37P

Connector Terminal

YES

NO

19-119

FR

B (GRN)

RL-GND (PUR)

FR-GND (PNK)

RR

B (LT GRN)

FL-GND (RED)

FL

B (WHT)

RR-GND
(BLU)

RL

B (YEL)

VSA MODULATOR-CONTROL UNIT 37P CONNECTOR

FR

B (GRN)

RL-GND (PUR)

FR-GND (PNK)

RR

B (LT GRN)

FL-GND (RED)

FL

B (WHT)

RR-GND
(BLU)

RL

B (YEL)

VSA MODULATOR-CONTROL UNIT 37P CONNECTOR

11. Check for continuity between body ground and the

appropriate VSA modulator-control unit 37P
connector terminals (see table).

11-13

No. 19

No. 6

13-13

No. 22

No. 11

15-13

No. 9

No. 21

17-13

No. 20

No. 8

Repair short to body ground in the wire

between the appropriate wheel speed sensor and
the VSA modulator-control unit.

Go to step 12.

12. Turn the ignition switch to ON (II).

13. Measure the voltage between body ground and the

appropriate VSA modulator-control unit 37P
connector terminals (see table).

11-13

No. 19

No. 6

13-13

No. 22

No. 11

15-13

No. 9

No. 21

17-13

No. 20

No. 8

Repair short to power in the wire between

the appropriate wheel speed sensor and the VSA
modulator-control unit.

Go to step 14.

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 15:04:58 61SNR030_190_0119

ＳＮＲ９ＡＣ７Ｋ８０１０００Ｒ１２１１ＦＡＡＴ００

−

−

−

−

YES

NO

YES

NO

DTC 12-11:

DTC 14-11:

DTC 16-11:

DTC 18-11:

19-120

19-120

VSA System Components

14. Turn the ignition switch to LOCK (0).

15. Substitute the appropriate wheel speed sensor with

opposite wheel speed sensor, or with a known-
good wheel speed sensor.

16. Reconnect all connectors.

17. Turn the ignition switch to ON (II).

18. Clear the DTC with the HDS.

19. Turn the ignition switch to LOCK (0), then turn it to

ON (II) again.

20. Check for DTCs with the HDS.

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.

Replace the original wheel speed sensor

(see page 19-173).

NOTE: These DTCs may be caused by electrical
interference. Check for aftermarket devices installed in
the vehicle when these DTCs are indicated.

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.

If DTC 12-12, 14-12, 16-12, or 18-12 is

indicated at the same time, do the DTC 12-12,
14-12, 16-12, or 18-12 troubleshooting first
(see page 19-121). If DTC 12-12, 14-12, 16-12, or
18-12 is not indicated, go to step 5.

If any other DTCs are indicated, go to the

indicated DTCs troubleshooting. If DTCs are not
indicated, there is an 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).

Right-front Wheel Speed Sensor

Electrical Noise or Intermittent Interruption

Left-front Wheel Speed Sensor

Electrical Noise or Intermittent Interruption

Right-rear Wheel Speed Sensor

Electrical Noise or Intermittent Interruption

Left-rear Wheel Speed Sensor

Electrical Noise or Intermittent Interruption

Is DT C indicated that is indicated in step 4?

Is DT C 12-11, 14-11, 16-11, and/ or 18-11
indicated?

08/08/21 15:04:58 61SNR030_190_0120