2006 ACURA CSX engine

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19-28Conventional Brake Components
Brake Booster Replacement (cont’d)
B
A
7. Pull the brake booster (A) forward.
 Be careful not to damage the brakebooster mounting surfaces and the
threads on the booster studs.
 Be careful not to bend or damage the brake lines.
8. Remove the brake booster by pu lling it out and
turning it, and remove it from the engine
compartment.
NOTE: Use a new brake booster gasket (B) during
reassembly. 9. Install the brake booster in the reverse order of
removal, and note these items:
 Install the master cylinder after installing the brake booster (see page 19-24).
 Replace the master cylinder rod seal.
 Check the brake pedal height and free play after installing the master cylinder, and adjust it if
necessary (see page 19-6).
 Bleed the brake system (see page 19-9).
08/08/21 15:01:01 61SNR030_190_0028
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DTCDetection Item ABS Indicator Brake System
Indicator Note
19-54ABS Components
DTC Troubleshooting Index (cont’d)
71 -21 Right-front or Left-rear Different Diameter Tire Malfunction
ONON (see page 19-83)
-22 Left-front or Right-rear Different Diameter Tire Malfunction ONON (see page 19-83)
-23 Right-front and Right-rear Different Diameter Tire Malfunction ONON (see page 19-83)
-24 Left-front and Left-rear Different Diameter Tire Malfunction ONON (see page 19-83)
-25 Right-front and Left-front Different Diameter Tire Malfunction ONON (see page 19-83)
-26 Right-rear and Left-rear Different Diameter Tire Malfunction ONON (see page 19-83)
81 -01 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-05 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-06 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-08 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-11 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-14 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-23 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-30 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-31 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-32 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-51 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-52 Central Processing Unit (CPU) Internal Circuit Malfunction ONON (see page 19-84)
-71 Central Processing Unit (CPU) Internal Circuit Malfunction ONOFF (see page 19-84)
86 -01 F-CAN Bus-off Malfunction OFFOFF (see page 19-85)
-24 F-CAN Communication with Engine Malfunction OFFOFF (see page 19-86)
-25 F-CAN Communication with Engine Malfunction OFFOFF (see page 19-86)
-FF F-CAN Communication with ABS Malfunction OFFOFF (see page 19-87)
08/08/21 15:02:16 61SNR030_190_0054
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µ
µ µ
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YES
NO YES
NO
DTC 61-01:
DTC 61-21:
DTC 61-22:
DTC 61-23:
19-8119-81
ABS MODULATOR-CONTROL UNIT 25P CONNECTOR
FSR B (WHT)
14. Disconnect the ABS modulator-control unit 25Pconnector (see step 2 on page 19-90).
15. Measure the voltage between ABS modulator- control unit 25P connector terminal No. 8 and body
ground.
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 No. 3
(30 A) fuse in the under-hood fuse/relay box and
the ABS modulator-control unit. 1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then start the
engine.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the system is OK at this
time. Check for loose terminals at the ABS
modulator-control unit 25P connector. Refer to
intermittent failures troubleshooting (see page
19-50).
5. Check and note BATTERY voltage in the ABS DATA LIST with the HDS.
6. Using a voltmeter, measure and note the voltage between the battery terminals.
NOTE: If the battery voltage is below 9.5 V, check
the battery (see page 22-67), and troubleshoot the
alternator regulator circuit (see page 4-28).
(cont’d)ABS Modulator-control Unit Initial
IG Low Voltage
ABS Modulator-control Unit
Power Source Low Voltage 1
ABS Modulator-control Unit
Power Source Low Voltage 2
ABS Modulator-control Unit
Power Source Low Voltage 3
Wire side of female terminals
I s t her e bat t er y v ol t age? I s DT C 61-01, 61-21, 61-22, or 61-23 i nd i cat ed ?
08/08/21 15:03:16 61SNR030_190_0081
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µ
µ µ
µ
µ
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YES
NO
YES
NO
YES
NO
DTC 62-21:
19-8219-82ABS Components
DTC Troubleshooting (cont’d)
7. Compare the data list voltage noted in step 5 to the
battery voltage in step 6.
Intermittent failure, the system is OK at this
time. Check for loose terminals at the ABS
modulator-control unit 25P connector. Refer to
intermittent failures troubleshooting (see page
19-50). If the code resets after clearing, replace the
ABS modulator-control unit (see page 19-90).
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. 1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then start the
engine.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the system is OK at this
time.
5. Check and note BATTERY voltage in the ABS DATA LIST with the HDS.
6. Using a voltmeter, measure and note the voltage between the battery terminals.
NOTE: If the voltage is above 15.1 V, troubleshoot
the alternator regulator circuit (see page 4-28).
7. Compare the data list voltage noted in step 5 to the battery voltage in step 6.
Intermittent failure, the system is OK at this
time. Check for loose terminals at the ABS
modulator-control unit 25P connector. Refer to
intermittent failures troubleshooting (see page
19-50). If the code resets after clearing, replace the
ABS modulator-control unit (see page 19-90).
Replace the ABS modulator-control unit
(see page 19-90), and retest.ABS Modulator-control Unit IG
High Voltage
Is t he d i f f er ence bet w een t he t w o v ol t age
r ead i ngs l ess t han 3 V ?
Is DT C 62-21 indicated?
Is t he d i f f er ence bet w een t he t w o v ol t ager ead i ngs l ess t han 3 V ?
08/08/21 15:03:16 61SNR030_190_0082
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µ
µ
µ
µ
DTC 86-24:
DTC 86-25:
YES
NO Sign ECM/PCM
Connector A
(44P) Terminal
YES
NO
ABS Modulator-
control Unit 25P
Connector Terminal
19-86 ABS Components
DTC Troubleshooting (cont’d)
CAN-H (WHT)
CAN-L (RED)
ECM/PCM CONNECTOR A (44P) CAN-L (RED)
CAN-H (WHT) ABS MODULATOR-CONTROL UNIT 25P CONNECTOR
F-CAN Communication with
Engine Malfunction
F-CAN Communication with
Engine Malfunction
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.
Intermittent failure, the system is OK at this
time. Check for loose terminals between ECM/PCM
connector A (44P) and the ABS modulator-control
unit 25P connector. Refer to intermittent failures
troubleshooting (see page 19-50).
5. Turn the ignition switch to LOCK (0).
6. Short the SCS line with the HDS.
7. Disconnect ECM/PCM connector A (44P).
8. Disconnect the ABS modulator-control unit 25P connector (see step 2 on page 19-90). 9. Check for continuity between ABS modulator-
control unit 25P connector terminal and ECM/PCM
connector A (44P) terminal (see table).
CAN-L No. 17 No. 37
CAN-H No. 1 No. 36
Go to step 10.
Repair open in the wire between the ECM/
PCM and the ABS modulator-control unit.
Wire side of female terminals
Terminal side of female terminals
Is DT C 86-24 and/ or 86-25 indicated? Is there continuity?
08/08/21 15:03:17 61SNR030_190_0086
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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
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 Special Tools Required
Front
19-92ABS Components
Wheel Speed Sensor Replacement
A
B
C9.8 N·m
(1.0 kgf·m,
7.2 lbf·ft)
Guide pin tool 07AAG-SVBA100
1. Turn the ignition switch to LOCK (0).
2. Release the connector clamp (A), then disconnect the wheel speed sensor connector (B).
3. Remove the clips, the bolt, and the wheel speed sensor (C).
4. Install the wheel speed sensor in the reverse order of removal, and note these items:  Install the sensor carefully to avoid twisting the wires.
 If the wheel speed sensor comes in contact with the wheel bearing, it is faulty. Investigate the cause beforereplacing the sensor.
5. Start the engine, and make sure the ABS indicator goes off.
6. Test-drive the vehicle, and make sure the ABS indicator does not come on.
08/08/21 15:04:46 61SNR030_190_0092
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19-94ABS Components
Wheel Speed Sensor Replacement (cont’d)
B
A
A
07AAG-SVBA100 B
07AAG-SVBA100
A
4. Apply multi-purpose grease to the wheel speedsensor O-ring (A) and the sensor hole in the knuckle
(B).
5. Insert the guide pin tool (A) into the wheel speed sensor bolt hole until the shoulder of the tool
contacts the wheel speed sensor bracket.
NOTE: To prevent O-ring damage, the wheel speed
sensor must be installed with the guide pin tool. 6. Insert the wheel speed sensor (A) and the guide pin
tool (B) into the bolt hole on the knuckle.
NOTE: To ensure proper alignment when pushing
the wheel speed sensor into the knuckle housing,
do not hold the sensor bracket during installation,
hold the sensor wire.
7. Gently push and pull the wheel speed sensor in and out to make sure the O-ring is sliding properly in its
housing. While you are doing this, make sure the
sensor doesn’t come out of the knuckle assembly. If
the sliding effort is too high, remove the wheel
speed sensor, inspect the O-ring for damage, and
start the installation process again.
8. Remove the guide pin tool, then install the bolt, and tighten it to specified torque.
9. Clean the mating surfaces between the brake disc and the inside of the wheel, then install the front
wheel.
10. Start the engine, and make sure the ABS indicators go off.
11. Test-drive the vehicle, and make sure the ABS indicators do not come on.
08/08/21 15:04:46 61SNR030_190_0094
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