Acura RL (1996-2004 year). Manual — part 524
Troubleshooting Index
DTC
NO
DTC
11
13
15
17
12
14
16
18
21
22
23
24
31
32
33
34
35
36
37
38
41
42
43
44
51
52
53
54
61
62
71
81
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
DIAGNOSIS/SYMPTOM
ABS indicator does not come on
ABS indicator does not go off (No DTC)
Wheel sensor (open/short to body ground/short to
power)
Wheel sensor (electrical noise/intermittent interrup-
tion)
Pulser
Solenoid (short to body ground/short to wire)
Wheel lock
Motor lock
Motor stuck OFF
Motor stuck ON
Fail-safe relay
Ignition voltage
Different diameter tire
Central Processing Unit (CPU) diagnosis, and
ROM/RAM diagnosis
DETECTION
TIMING
O
0
O
O
O
O
0
O
0
O
O
0
O
O
O
PROBLEM
LOCATION
FR
FL
RR
RL
FR
FL
RR
RL
FR
FL
RR
RL
FR-IN
FR-OUT
FL-IN
FL-OUT
RR-IN
RR-OUT
RL-IN
RL-OUT
FR
FL
RR
RL
FAIL-
SAFE
MODE
L
O
0
O
O
O
O
REFER
TO
PAGE
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Troubleshooting
ABS Indicator Does Not Come On
ABS indicator does not come on
when the ignition switch is
turned ON (II).
Check the indicator power
source circuit:
Turn the ignition switch ON (II).
Does the brake system indi-
cator come on?
Check the ABS control unit:
1. Turn the ignition switch OFF.
2. Disconnect the ABS control
unit 12P connector.
3. Turn the ignition switch ON (II).
Does the ABS indicator
come on?
Is the bulb OK?
Check for a short to body ground
in the WALP circuit:
1. Disconnect the gauge assem-
bly 30P connector.
2. Check for continuity between
terminal No. 22 and body
ground.
Is there continuity?
Gauge relay stuck OFF.
Blown METER (15 A) fuse in the
under-hood fuse/relay box.
Blown METER (7.5 A) fuse in
the under-dash fuse/relay box.
Repair open in the wire between
the METER (15 A) fuse and the
gauge assembly.
Repair open in the wire
between the METER (7.5 A)
fuse and body ground.
Replace the under-hood fuse/
relay box or under-dash fuse/
relay box. (Open circuit inside
the box.)
Check for loose ABS control unit
connectors. If necessary, substi-
tute a known-good ABS control
unit and recheck.
Replace the ABS indicator bulb.
GAUGE ASSEMBLY 30P CONNECTOR
Repair short to body ground in the
wire between the gauge assembly
and the ABS control unit.
Wire side of female terminals
Check the ABS indicator bulb in
the gauge assembly.
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Check for an open in the indica-
tor GND circuit:
1. Turn the ignition switch OFF.
2. Connect the gauge assembly
30P connector.
3. Connect the gauge assembly
22P connector terminal No. 10
to body ground with a jumper
wire.
4. Turn the ignition switch ON (II).
Does the ABS indicator come on?
GAUGE ASSEMBLY 22P CONNECTOR
WIRE
Wire side of female terminals
Repair open in the wire between
the gauge assembly and body
ground.
Repair poor ground (G401,
G402).
Replace the printed circuit board
in the gauge assembly.
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Troubleshooting
ABS Indicator Does Not Go Off (No DTC)
Is the fuse OK?
Check for an open in the GND
circuit:
1. Connect the ABS control unit
22P connector terminal No. 1
to body ground with a jumper
wire.
2. Turn the ignition switch ON (II).
Does the ABS indicator go off?
Check for an open in the IG2 cir-
cuit:
Measure the voltage between the
ABS control unit 22P connector
terminal No. 11 and body ground.
Is there battery voltage?
Check the ABS control unit:
Connect the ABS control unit 12P
connector terminal No. 1 to body
ground with a jumper wire.
Does the ABS indicator go off?
Replace the fuse and recheck.
ABS CONTROL UNIT 22P CONNECTOR
Wire side of female terminals
Repair open in the wire between
the ABS control unit and body
ground.
Repair poor ground (G404).
Repair open in the wire between
the R/C MIRROR (7.5 A) fuse and
the ABS control unit.
Check for loose ABS control unit
connectors. If necessary, substi-
tute a known-good ABS control
unit and recheck.
Wire side of female terminals
ABS CONTROL UNIT 12P CONNECTOR
JUMPER
WIRE
JUMPER
WIRE
With engine running, the ABS
indicator is ON.
With the SCS service connec-
tor connected (see page
), no DTC is indicated.
Check the R/C MIRROR (7.5 A) fuse
in the under-dash fuse/relay box,
and reinstall the fuse if it is OK.
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