Acura RL (1996-2004 year). Manual — part 549

(From page

19-228

)

Check for an open in the YRSA

YM circuit:

Check for continuity between the

VSA control unit 42P connector

terminal No. 21 and the steering

angle sensor 4P connector termi-

nal No. 1.

Is there continuity?

Check for an open in the CAN (+)

circuit:

Check for continuity between the

VSA control unit 42P connector

terminal No. 24 and the steering

angle sensor 4P connector termi-

nal No. 2.

Is there continuity?

Check for an open in the CAN (-)

circuit:

Check for continuity between the

VSA control unit 42P connector

terminal No. 40 and the steering

angle sensor 4P connector termi-

nal No. 3.

Is there continuity?

Check the steering angle sensor:

1. Substitute a known-good

steering angle sensor.

2. Connect all of disconnected

connector.

3. Clear the DTC.

4. Test drive the vehicle around a

number of corners.

5. Verify the DTC.

Is DTC 27 indicated?

VSA CONTROL UNIT 42P CONNECTOR

Repair open in the wire between

the steering angle sensor and

the VSA control unit.

Wire side of

female terminals

STEERING ANGLE

SENSOR 4P

CONNECTOR

Wire side of female terminals

Replace the steering angle sensor.

Repair open in the wire between

the steering angle sensor and

the VSA control unit.

Repair open in the wire between

the steering angle sensor and

the VSA control unit.

Replace the VSA modulator-con-

trol unit.

YRSA YM

(RED/WHT)

(RED)

(WHT)

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Troubleshooting

DTC 31, 32, 33, 34, 35, 36, 37, 38: ABS Solenoid

Problem verification:

1. Clear the DTC.
2. Test drive the vehicle.

3. Verify the DTC.

Are DTCs 31, 32, 33, 34, 35,
36, 37, 38 indicated?

The system is OK at this time.

Check for loose terminals in the
VSA control unit 42P connector. If
necessary, substitute a known-
good VSA modulator-control unit,
and recheck.

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DTC 45, 46, 47, 48: VSA Solenoid

Problem verification:

1. Clear the DTC.

2. Test drive the vehicle.
3. Verify the DTC.

Are DTCs 45, 46, 47, 48 indicated?

The system is OK at this time.

Check for loose terminals in the
VSA control unit 42P connector.

If necessary, substitute a known-
good VSA modulator-control
unit, and recheck.

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Troubleshooting

DTC 51, 52, 53: Pump Motor

Check the VSA MOTOR (40 A)

fuse in the under-hood fuse/relay

box, and reinstall the fuse if it is
OK.

Is the fuse OK?

Check for an open in the +B-MR
circuit:

1. Disconnect the VSA control

unit 42P connector.

2. Measure the voltage between

terminal No. 2 and body

ground.

Is there battery voltage?

Check for an open in the M-GND
circuit:
Check for continuity between the
VSA control unit 42P connector
terminal No. 1 and body ground.

Is there continuity?

Problem verification:

1. Clear the DTC.

2. Test drive the vehicle at 12

mph (20 km/h) or more.

3. Verify the DTC.

Is DTC 51, 52 or 53 indicated?

Replace the fuse, and recheck. If

the fuse is blown, check for a

short to body ground in this fuse
circuit. If the circuit is OK,
replace the VSA modulator-con-
trol unit.

VSA CONTROL UNIT 42P CONNECTOR

Repair open in the wire between
the VSA MOTOR (40A) fuse and

the VSA control unit.

Repair open in the wire
between the VSA control unit
and body ground.
Repair poor ground (G401,

G402).

The system is OK at this time.

Check for loose terminals in the
VSA control unit 42P connector.

If necessary, substitute a known-
good VSA modulator-control
unit, and recheck.

Terminal side of female terminals

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