Acura RL (1996-2004 year). Manual — part 533

Troubleshooting Guide

System Indicated

Refer

to

page

Related components

19-162

19-164

19-165

19-168

19-171

19-176

19-177

19-178

19-179

19-180

19-182

19-184

19-185

19-186

19-187

19-190

TCS indicator light does not come on when ignition

switch is turned ON (II)

— TCS indicator light does not go off after engine is started

2 Parking brake

2-1 Steering angle sensor

TC-INH signal

3-1 TCS inhibition PGM-FI DTC: 35

PGM-FI DTC: 36

3-2 Engine speed (NEP) signal

3-4 Reference voltage (VREF) signal

3-5 Barometric pressure (BARO) signal

3-6 Throttle position sensor (TPS) signal

3-7 TCS control valve sensor ( TCV) signal

4-1 Right-front wheel sensor (FRP) signal

4-2 Left-front wheel sensor (FLP) signal

4-4 Right-rear wheel sensor (RRP) signal

4-8 Left-rear wheel sensor (RLP) signal

4-9 ABS down

5-1 Fail-safe relay stuck on

5-2

——— Ignition switch (IG1) signal

5-3

5-4 Initial motor operation

5-5 Motor operation (1)

5-6 Motor operation (2)

TCS control valve .. .. .

5-7 „ Over limit motor current

actuator

5-8 Motor driver open

5-9 Under limit motor current

5-10 Motor driver shorted

6-1 A/T shift position (AT-SHIFT) signal

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Troubleshooting

TCS Indicator Light Does Not Come On

The TCS indicator light does not come on when ignition switch is turned ON (II).

The TCS indicator light does not
come on when ignition switch is
turned ON (II).

Check the METER (15 A) fuse in the
under-hood fuse/relay box and
METER (7.5 A) fuse in the under-
dash fuse/relay box.

Are the fuses OK?

Check for an open in the IG1 cir-
cuit:

1. Disconnect the gauge assem-

bly 22P connector.

2. Turn the ignition switch ON (II).
3. Measure the voltage between

the gauge assembly 22P con-

nector terminal No. 22 and
body ground.

Is there battery voltage?

Is the bulb OK?

Check the gauge assembly:

1. Connect the gauge assembly

22P connector.

2. Connect the gauge assembly

22P connector terminal No. 7
to body ground with a jumper
wire.

Does the TCS indicator light

come on?

To page

19-163

NOTE: All indicator lights except the charging

system indicator light will not come on when
one of these fuses is blown.

Replace the fuse(s) and recheck.

NOTE: Reinstall the fuses if they are OK.

GAUGE ASSEMBLY 22P CONNECTOR

Repair open in the wire between

the METER (15 A) fuse in the

under-hood fuse/relay box and
gauge assembly.
Repair open in the wire between
the METER (7.5 A) fuse in the
under-dash fuse/relay box and
body ground.
Meter relay stuck OFF.
Replace the under-hood fuse/
relay box or under-dash fuse/
relay box.

(Open circuit inside the fuse/
relay box)

Wire side of female terminals

Replace the TCS indicator light
bulb.

JUMPER WIRE

Replace the printed circuit board
in the gauge assembly.

Check the TCS indicator light bulb
in the gauge assembly.

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From page

19-162

Check for an open in the WARN
circuit:

1. Turn the ignition switch OFF.

2. Disconnect the TCS control

unit 14P and 20P connectors.

3. Turn the ignition switch ON (II).
4. Connect the TCS control unit

HP connector terminal No. 2 or

20P connector terminal No. 17
to body ground with a jumper
wire.

Does the TCS indicator light
come on?

Check for an open in the LG cir-
cuit:

1. Connect the TCS control unit

14P and 20P connectors.

2. Connect the TCS control unit

14P connector terminal No. 4 or

20P connector terminal No. 15
to body ground with a jumper
wire.

Does the TCS indicator light
come on?

Check for loose TCS control unit
connectors. If necessary, substi-
tute a known-good TCS control
unit and recheck.

TCS CONTROL UNIT 14P CONNECTOR

JUMPER
WIRE

Wire side of female terminals

TCS CONTROL UNIT 20P CONNECTOR

Repair open in the wire between

the gauge assembly and TCS con-
trol unit.

Repair open in the two wires
between the TCS control unit
and body ground.
Repair poor ground (G101).

JUMPER
WIRE

JUMPER
WIRE

Wire side of female terminals

JUMPER
WIRE

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Troubleshooting

TCS Indicator Light Does Not Go Off

The TCS indicator light does not go off after the engine is started.

Is the fuse OK?

Check for an open in the IG1 cir-
cuit:

1. Turn the ignition switch ON (II).
2. Measure the voltage between

the TCS control unit 20P con-

nector terminal No. 1 and
body ground.

Is there battery voltage?

Check for a short to body ground

in the WARN circuit:

1. Turn the ignition switch OFF.

2. Disconnect TCS control unit

14P and 20P connectors.

3. Turn the ignition switch ON (II).

Does the TCS indicator light

come on?

Replace the fuse and recheck.

NOTE: Reinstall the fuse if it is OK.

TCS CONTROL UNIT 20P CONNECTOR

Wire side of female terminals

Repair open in the wire between

the ECU (20 A) fuse and TCS con-
trol unit.

Repair short to body ground in
the wire between the TCS indica-
tor light and TCS control unit.

Check for loose TCS control unit
connectors. If necessary, substi-
tute a known-good TCS control
unit and recheck.

With engine running, TCS indi-
cator light is ON.
With the SCS service connec-
tor connected (see page

19-159

), no DTC is indicated.

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