Acura CSX. Manual — part 396

＊０１

＊０２

ＳＮＲ９ＡＣ６Ｄ１０６００００００００ＦＡＡＴ０４

−

−

−

−

−

−

−

−

ABS indicator and brake system indicator do
not go off

YES

NO

YES

NO

YES

NO

YES

NO

19-88

ABS Components

Symptom Troubleshooting

ABS MODULATOR-CONTROL UNIT 25P CONNECTOR

IG1 (YEL)*

*1: ’06 model
*2: ’07 model

(GRY)*

ABS MODULATOR-CONTROL UNIT 25P CONNECTOR

IG1 (YEL)*

*1: ’06 model
*2: ’07 model

(GRY)*

1

2

1

2

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

2. Check the No. 4 (7.5 A) fuse in the under-dash fuse/

relay box.

Go to step 3.

Reinstall the checked fuse, then go to step 8.

3. Disconnect the ABS modulator-control unit 25P

connector (see step 2 on page 19-90).

4. Check for continuity between ABS modulator-

control unit 25P connector terminal No. 16 and
body ground.

Repair short to body ground in the wire

between the No. 4 (7.5 A) fuse in the under-dash
fuse/relay box and the ABS modulator-control
unit.

Install a new No. 4 (7.5 A) fuse in the under-

dash fuse/relay box, then go to step 5.

5. Reconnect the ABS modulator-control unit 25P

connector.

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

7. Check the ABS indicator and the brake system

indicator for several seconds when the ignition
switch is tuned to ON (II).

Troubleshooting is complete.

Replace the ABS modulator-control unit

(see page 19-90).

8. Disconnect the ABS modulator-control unit 25P

connector (see step 2 on page 19-90).

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

10. Measure the voltage between ABS modulator-

control unit 25P connector terminal No. 16 and
body ground.

Go to step 11.

Repair open in the wire between the No. 4

(7.5 A) fuse in the under-dash fuse/relay box and
the ABS modulator-control unit.

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

Wire side of female terminals

Wire side of female terminals

Is the f use blown?

Is ther e continuity?

Does the indicator s come on then go of f ?

Is ther e batter y voltage?

08/08/21 15:03:17 61SNR030_190_0088

＊０３

０１

−

−

−

−

YES

NO

Sign

YES

NO

ABS Modulator-
control Unit 25P

Connector Terminal

Gauge Control

Module (Tach) 36P

Connector Terminal

19-89

ABS MODULATOR-CONTROL UNIT 25P CONNECTOR

GND (BLK)

CAN-H (WHT)

CAN-L (RED)

GAUGE CONTROL MODULE (TACH) 36P CONNECTOR

CAN-H (WHT)

CAN-L (RED)

ABS MODULATOR-CONTROL UNIT 25P CONNECTOR

12. Check for continuity between ABS modulator-

control unit 25P connector terminal No. 24 and
body ground.

Go to step 13.

Repair open in the wire between the ABS

modulator-control unit and body ground (G202).

13. Disconnect the gauge control module (tach) 36P

connector.

14. Check for continuity between the ABS modulator-

control unit 25P connector terminal and gauge
control module (tach) 36P connector terminal (see
table).

CAN-L

No. 17

No. 19

CAN-H

No. 1

No. 1

Check for loose terminals in the ABS

modulator-control unit 25P connector. If necessary,
substitute a known-good ABS modulator-control
unit (see page 19-90), and retest.

Repair open in the wire between the gauge

control module (tach) and the ABS modulator-
control unit.

Wire side of female terminals

Wire side of female terminals

Wire side of female terminals

Is ther e continuity?

Is ther e continuity?

08/08/21 15:03:18 61SNR030_190_0089

０１

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Removal

19-90

ABS Components

ABS Modulator-Control Unit Removal and Installation

A

B

C
15 N·m
(1.5 kgf·m, 11 lbf·ft)

D

E

I

F

G

H

15 N·m
(1.5 kgf·m, 11 lbf·ft)

9.8 N·m
(1.0 kgf·m, 7.2 lbf·ft)

9.8 N·m
(1.0 kgf·m, 7.2 lbf·ft)

NOTE:

• Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid gets on the paint, wash it off

immediately with water.

• Be careful not to damage or deform the brake lines during removal and installation.
• Plug the ends of the hoses and the joints to prevent spilling brake fluid.

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

2. Disconnect the ABS modulator-control unit 25P connector (A) by pulling up the lock (B); the connector disconnects

itself.

3. Disconnect the six brake lines from the ABS modulator-control unit.

NOTE: Brake lines are connected to the master cylinder (C) and to the right-front (D), the left-rear (E), the right-rear
(F), and the left-front (G) brake systems.

4. Remove the ABS modulator-control unit (H) with the brackets (I) from the body.

5. Remove the ABS modulator-control unit from the brackets.

6. Separate the bracket if necessary.

08/08/21 15:03:18 61SNR030_190_0090

Installation

19-91

1. Install the ABS modulator-control unit onto the brackets.

2. Install the bracket with the ABS modulator-control unit to the body.

3. Reconnect the six brake lines, then tighten the flare nuts to the specified torque.

4. Align the connecting surface of the ABS modulator-control unit 25P connector to the ABS modulator-control unit.

5. Lower the lock of the ABS modulator-control unit 25P connector, then confirm the connector is fully seated.

6. Bleed the brake system (see page 19-9).

7. Start the engine, and make sure the ABS indicator goes off.

8. Test-drive the vehicle, and make sure the ABS indicator does not come on.

NOTE: If the brake pedal is spongy, there may be air trapped in the modulator which could then be induced into
the normal brake system during modulation. Bleed the brake system again (see page 19-9).

08/08/21 15:04:45 61SNR030_190_0091