Acura RL (1996-2004 year). Manual — part 547
DTC 11, 13, 15, 17: Wheel Sensor (Open/Short to Body Ground/Short to Power)
Check for a short to power in the
wheel sensor circuit:
1. Disconnect the VSA control
unit 42P connector.
2. Start the engine.
3. Measure the voltage between
the VSA control unit 42P con-
nector appropriate wheel sen-
sor (+) circuit terminal and
body ground (see table).
DTC
11 (Right-front)
13 (Left-front)
15 (Right-rear)
17 (Left-rear)
Appropriate Terminal
(+) Side
No. 16:FRS(+)
No. 28:FLS(+)
No. 31: RRS (+)
No.14: RLS(+)
(-) Side
No. 15: FRS(-)
No. 13:FLS (-)
No. 30: RRS (-)
No. 29: RLS (-)
VSA CONTROL UNIT 42P CONNECTOR
Is there battery voltage?
Repair short to power in the {+)
or (-) circuit wire between the
VSA control unit and appropriate
wheel sensor.
Wire side of female terminals
Check for a short to body ground
in the wheel sensor circuit:
1. Turn the ignition switch OFF.
2. Check for continuity between
the VSA control unit 42P con-
nector appropriate wheel sen-
sor (+) circuit terminal and
body ground (see table).
Is there continuity?
Repair short to body ground in
the (+) or (-) circuit wire between
the VSA control unit and the
appropriate wheel sensor.
Replace the appropriate wheel
sensor.
Check for an open in the wheel
sensor circuit:
Measure the resistance between
the VSA control unit 42P connector
appropriate wheel sensor (+) and
(-) circuit terminals (see table).
Is the resistance between
450 - 2,000 at 68°F?
• Repair open in the (+) or (-) cir-
cuit wire between the VSA con-
trol unit and the appropriate
wheel sensor.
• Replace the appropriate wheel
sensor.
Check for loose terminals in the
VSA control unit 42P connector.
If necessary, substitute a known-
good VSA modulator-control
unit, and recheck.
Main Menu
Table of Contents
Troubleshooting
DTC 12, 14, 16, 18: Wheel Sensor (Electrical Noise/Intermittent Interruption)
NOTE: If the ABS indicator comes on for the reasons described below, the indicator should go off when you test drive the
vehicle at speeds above 19 mph (30 km/h).
Only the drive wheels rotated
The vehicle spun
Electrical noise
Is there continuity?
DTC
12
14
16
18
Appropriate Wheel Sensor
Right-front
Left-front
Right-rear
Left-rear
Reinstall or replace the appropri-
ate wheel sensor or pulser.
VSA CONTROL UNIT 42P CONNECTOR
DTC
12 (Right-front)
14 (Left-front)
16 (Right-rear)
18 (Left-rear)
Appropriate Terminal
(+) Side
No. 16:FRS(+)
No. 28:FLS(+)
No. 31:RRS(+)
No. 14:RLS(+)
(-) Side
No. 15:FRS(- )
No. 13: FLS (-)
No. 30: RRS (-)
No. 29: RLS (-)
Wire side of female terminals
Repair short to wire between the
appropriate wheel sensor (+) and
(-) circuits.
DTC
12 (Right-front)
14 (Left-front)
16 (Right-rear)
18 (Left-rear)
Appropriate
Terminal
No. 16:FRS(+)
No. 28:FLS(+)
No.31:RRS(+)
No. 14:RLS(+)
Other Terminal
No. 28: FLS
(+)
No. 16:FRS(+)
No. 16: FRS (+)
No. 16: FRS (+)
No. 31:RRS(+)
No. 31:RRS(+)
No. 28: FLS (+)
No. 28: FLS (+)
No. 14:RLS(+)
No. 14:RLS(+)
No. 14: RLS (+)
No. 31: RRS (+)
Repair short to wire between the
appropriate wheel sensor and
the other wheel sensor.
Clear the DTC, and test-drive the
vehicle. If the ABS indicator
comes on and the same DTC is
indicated, replace the VSA mod-
ulator-control unit.
Check for a short to another wire
in the wheel sensor circuit:
Check for continuity between the
appropriate wheel sensor (+) circuit
terminal and other wheel sensor
(+) circuit terminals (see table).
Is there less than 450 ?
Visually check for appropriate
wheel sensor and pulser installa-
tion (see table).
Are they installed correctly?
Main Menu
Table of Contents
DTC 25: Yaw Rate Sensor
Do these components meet
the normal standards?
Check for a short to power in the
YRS REF circuit:
1. Disconnect the VSA control
unit 42P connector, the yaw
rate/lateral acceleration sen-
sor 6P connector.
2. Turn the ignition switch ON (II).
3. Measure the voltage between
the VSA control unit 42P con-
nector terminal No. 10 and
body ground.
Is there battery voltage?
Check for a short to power in the
YRST circuit:
Measure the voltage between the
VSA control unit 42P connector
terminal No. 9 and body ground.
Is there battery voltage?
Check for a short to power in the
YRSS circuit:
Measure the voltage between the
VSA control unit 42P connector
terminal No. 41 and body ground.
Is there battery voltage?
Repair to normal standards.
VSA CONTROL UNIT 42P CONNECTOR
Wire side of female terminals
Repair short to power in the wire
between the yaw rate/lateral
acceleration sensor and the VSA
control unit.
Repair short to power in the wire
between the yaw rate/lateral
acceleration sensor and the VSA
control unit.
Repair short to power in the wire
between the yaw rate/lateral
acceleration sensor and the VSA
control unit.
Check the wheels, tires, suspen-
sion, and alignment.
Main Menu
Table of Contents
Troubleshooting
DTC 25: Yaw Rate Sensor (cont'd)
(From page
Check for a short to body ground
in the yaw rate sensor circuit:
1. Turn the ignition switch OFF.
2. Disconnect the steering angle
sensor 4P connector.
3. Check for continuity between
body ground and the VSA
control unit 42P connector
terminal No. 9, 10, 21, 39, 41
individually.
Are there continuity?
Check for an open in the YRS
REF circuit:
Check for continuity between the
VSA control unit 42P connector
terminal No. 10 and the yaw rate/
lateral acceleration sensor 6P con-
nector terminal No. 3.
Is there continuity?
Check for an open in the YRST
circuit:
Check for continuity between the
VSA control unit 42P connector
terminal No. 9 and the yaw rate/
lateral acceleration sensor 6P
connector terminal No. 2.
Is there continuity?
Check for an open in the YRSS
circuit:
Check for continuity between the
VSA control unit 42P connector
terminal No. 41 and the yaw rate/
lateral acceleration sensor 6P
connector terminal No. 6.
Is there continuity?
VSA CONTROL UNIT 42P CONNECTOR
Wire side of female terminals
Repair short to body ground in
the wire between the yaw rate/
lateral acceleration sensor and
the VSA control unit.
Repair open in the wire between
the yaw rate/lateral acceleration
sensor and the VSA control unit.
YAW RATE/LATERAL
ACCELERATION SENSOR
6P CONNECTOR
Wire side of female terminals
Repair open in the wire between
the yaw rate/lateral acceleration
sensor and the VSA control unit.
Main Menu
Table of Contents
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