Acura RL (1996-2004 year). Manual — part 641

Driver's Power Seat Position Sensor Test

CAUTION: Be careful not to damage the seat, interior
trim or body.

1. Remove the driver's seat (see

section 20

2. Disconnect the connector from each power seat

memory sensor and motor.

RECLINE
POSITION
SENSOR

REAR
UP-DOWN
POSITION
SENSOR

FRONT
UP-DOWN
POSITION
SENSOR

SLIDE
POSITION
SENSOR

NOTE: If a motor does not run, reverse power and

ground. If the motor still does not run, replace the

motor.

3. Test the sensor by connecting power and ground to

the motor, and connect an analog ohmmeter test

leads to the sensor connector.

The needle in the ohmmeter should move from left
to right.

CAUTION: When a motor stops running, discon-
nect power immediately.

Main Menu

Table of Contents

Driving Position Memory System (DPMS)

Steering Column Control Unit Input Test

1. Remove the dashboard lower cover (see

section 20

2. Disconnect the steering column control unit connectors.

3. Inspect the connector and socket terminals to be sure they are all making good contact.

• If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
• If the terminals look OK, make the following input tests at the connector.

If a test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, substitute a known-good control unit, and recheck the system.

NOTE:
• If all the control unit (steering column, power seat, power mirror) input tests prove OK, disconnect all three

control units, and check for opens or shorts in the communication lines.

• All connector views are from wire side of female terminals.

STEERING COLUMN CONTROL UNIT

12P CONNECTOR "A"

BLK/WHT

BLK/BLU

BLU/WHT

BLK

RED

WHT/YEL

RED/GRN

BLU/WHT

BLK/YEL

LT GRN/RED

16P CONNECTOR "B"

BLU

GRY

LT BLU

RED/BLK

BLU/ORN

BLU/WHT

YEL/WHT

YEL/BLU

BLU/YEL

BLU/BLK

RED

BRN

PNK

8P CONNECTOR "C"

BLK

BRN RED/YEL

LT GRN

PNK/BLK

GRY/RED

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Cavity Wire

Test condition

Test: Desired result

Possible cause if result is not obtained

A12

A10

A11

BLK/YEL

WHT/YEL

RED/YEL

BLK

BLU/WHT

RED/GRN

RED

BLK/BLU

BLU/WHT

Ignition switch ON (II)

Under all conditions

Ignition key inserted
into the ignition switch

Ignition key removed

from the ignition switch

Under all conditions
(observe memo
1 indicator)

Under all conditions
(observe memo

2 indicator)

Shift lever in position

Shift lever in any other
position than

Raise the front of the

vehicle support it with
safety stands, put it in

neutral, and rotate one

wheel with the other

blocked, then turn the
ignition switch ON (II).

Check for voltage to ground:

There should be battery voltage.

Check for continuity to ground:
There should be continuity.

Check for voltage to ground:
There should be 1 V or less.

Check for voltage to ground:

There should be 4 V or more.

Attach to ground:
The indicator should come on.

Check for voltage to ground:
There should be 1 V or less.

Check for voltage to ground:

There should be 4 V or more.

Check for voltage to ground:
The voltage should pulse from 0 V
to about 5 V or more.

• Blown No. 20 (20 A) fuse in the

under-dash fuse/relay box

• An open in the wire

• Blown No. 56 (7.5 A) fuse in the

under-hood fuse/relay box

• An open in the wire

• Blown No. 54 (20 A) fuse in the

under-hood fuse/relay box

• An open in the wire

• Poor ground (G401, G402 or G251)
• An open in the wire

• Poor ground (G401, G402 or G251)
• Faulty ignition key switch
• An open in the wire

• Blown No. 56 (7.5 A) fuse in the

under-hood fuse/relay box

• Faulty LED in the driving position

memory switch

• An open in the wire

• Faulty transmission range switch
• An open in the wire

• Faulty vehicle speed sensor (VSS)
• An open in the wire

Main Menu

Table of Contents

Driving Position Memory System (DPMS)

Steering Column Control Unit Input Test (cont'd)

12P CONNECTOR "A"

RED/GRN BLU/WHT

WHT/YEL

BLK/YEL

PNK BRN

RED

YEL/BLU

BLU/YEL

BLU/BLK

8P CONNECTOR "C"

RED/YEL

BLK

BRN

GRY/RED

LT GRN

Cavity Wire

Test condition

Test: Desired result

Possible cause if result is not obtained

B16

•

B16

•

B16

B13

•

B16

B14

B16

B15

B16

LT BLU

RED/BLK

•

YEL/BLU

BLU/ORN

•

YEL/BLU

BLU/WHT

•

YEL/BLU

YEL/WHT

•

YEL/BLU

RED

•

YEL/BLU

BLU/BLK

•

YEL/BLU

BLU/YEL

•

YEL/BLU

Auto switch ON

Auto switch OFF

Extend switch ON

Extend switch OFF

Up switch ON

Up switch OFF

Position button 1
pressed

Position button 1
released

MEMO button pressed

MEMO button released

Retract switch ON

Retract switch OFF

Down switch ON

Down switch OFF

Position button 2
pressed

Position button 2
released

Check for continuity to ground:
There should be continuity.

Check for continuity to ground:
There should be no continuity.