Acura RL (1996-2004 year). Manual

Lumbar Support System

Switch Test/Replacement

1. Carefully pry out the lumbar support switch from

the seat.

2. Disconnect the 5P connector from the switch (A).

3. Check for continuity between the terminals in each

switch position according to the table.

4. If the continuity is not as specified, replace the

switch.

Motor Test

1. Remove the driver's seat, refer to the '96 - 01 3.5RL

Service Manual P/N 61SZ305 (see page

20-57

2. Disconnect the 2P connector (A) from the lumbar

support sub harness.

3. Test each motor by applying battery voltage and

body ground to the terminals.

4. If the motor does not run or fails to run smoothly,

replace it (see page

20-5

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Navigation System

General Troubleshooting Information

General Operation

Refer to the Acura Navigation System Owner's manual

for the navigation system operating procedures.

Anti-theft Feature

The navigation system has a coded theft protection cir-
cuit. Be sure to get the customer's 4-digit security code

number before:

• disconnecting the battery
• disconnecting the navigation unit 8P connector
• removing the No. 56 (7.5A) fuse from the under-hood

fuse/relay box

After service, reconnect power to the navigation unit,
and turn the ignition switch ON (II). Enter the 4-digit
security code, then select "Done".

If the code cannot be found, use the interactive Network
(iN) to look it up. You will need the serial number for

the navigation unit in the trunk. It is on a tag on the

underside of the unit. Alternatively, you can view the
serial number in one of the Navi ECU diagnostic
screens.

When replacing the navigation unit, be sure to give the
customer the new anti-theft security code.

Symptom Diagnosis

Under some circumstances, the navigation system may
behave in an inconsistent manner. Some customers may
think that this indicates a problem when, in fact, the
system is working properly. Keep the following items in
mind when interviewing customers about symptoms
of the navigation system.

Self-lnertial Navigation Limitations

When GPS signals cannot be received (like in a tunnel or

in an urban environment of tall buildings), the system is
totally dependant on the yaw rate and speed sensor to
position the vehicle oh the map. Under these circum-
stances small errors in the yaw rate and speed sensor
can accumulate and display the vehicle position on an

adjacent street, or lagging behind the actual position.

This is normal, and usually corrects itself once sate-

llite reception is re-established.

The following circumstances may causes vehicle posi-
tioning errors.

• Moving the vehicle with the navigation system on and

the vehicle stopped, such as by ferry or tow truck, or if
the vehicle is spun on a turn table

• Tire slippage, changes in tire rolling diameters, and

some driving situations may cause discrepancies in
travel distances. Examples of this include:

- Continuous tire slippage on a slippery surface
- Driving with snow chains mounted
-Abnormal tire pressure
- Incorrect tire size
- Frequent lane changes across a wide highway
-Continuous driving on a straight or gently curving

highway

• Tolerances in the system and map inaccuracies some-

times limit how precisely the vehicle position is indi-

cated. Examples of this include:

- Driving on roads not shown on the map (map match-

ing is not possible)

- Driving on a road that winds in one direction, such as

a loop bridge, an interchange, or a spiral parking
garage

-Driving on a road with a series of sharp hair-pin

turns

- Driving near a gradual highway exit or transition
- Driving on one of two close parallel roads
- Making many 90 degree turns

Global Positioning System (GPS) Limitations

The GPS cannot detect the vehicle's position during the
following instances:

• For the first 5 to 10 minutes after reconnecting the bat-

tery (this can take as long as 45 minutes)

• When the satellite signals are blocked by tall building,

mountains, tunnels, large trees, or large trucks

• When there is no satellite signal output (Signal output

is sometimes stopped for satellite servicing)

• When the satellite signals are blocked by the operation

of some electronic aftermarket accessories including,
but not limited to non-DEM in-dash entertainment
units (radio, CD players/changers, and Lo Jack) and
window tinting above the GPS antenna

The accuracy of GPS is reduced during these instances:

• When only two satellite signals can be received (Three

satellite signals are required for accurate positioning)

• When the satellite control centers are experiencing

problems

• When driving hear high tension power lines.
• When driving near tall buildings that reflect satellite

signals, creating false position location readings.

• If electronic GPS jamming is occurring either inten-

tionally, or unintentionally.

• If loose items or pets are resting above the antenna

on the rear shelf.

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Acura RL (1996-2004 year). Manual - part 289