Acura RL (1996-2004 year). Manual — part 642
Cavity Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
C2
•
C7
C5
•
C6
BRN
•
LT GRN
GRY/RED
•
PNK/BLK
Connect C3 to the C2
terminal, and C7 termi-
nal to the C1 terminal
momentarily.
Connect C3 to the C3
terminal, and C2 termi-
nal to the C1 terminal
momentarily.
Connect C3 to the C5
terminal, and C6 termi-
nal to the C1 terminal
momentarily.
Connect C3 to the C6
terminal, and C5 termi-
nal to the C1 terminal
momentarily.
Check the tilt motor operation:
The steering column should tilt up.
Check the tilt motor operation:
The steering column should tilt
down.
Check the extend-retract motor
operation:
The steering column should
retract.
Check the extend-retract motor
operation:
The steering column should
extend.
• Faulty tilt motor
• An open in the wire
• Faulty tilt motor
• An open in the wire
• Faulty extend-retract motor
• An open in the wire
• Faulty extend-retract motor
• An open in the wire
Reconnect all connectors to the steering column control unit.
Cavity Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
B2
•
B10
B9
•
B10
B1
•
B10
GRY
•
BRN
PNK
*
BRN
BLU
•
BRN
Under all conditions
with all steering
column control unit
connectors connected.
Under all conditions
with all steering
column control unit
connectors connected.
Under all conditions
with all steering
column control unit
connectors connected.
Check for voltage between the
B2 and B10 terminals:
There should be 5 V.
Check for voltage between the
B9 and B10 terminals:
There should be about 2.5 V or
more with the steering column in
the fully-extended position, and
about 2.5 V or less in the
fully-retracted position.
Check for voltage between the
B1 and B10 terminals:
There should be about 2.5 V or
more with the steering column in
the fully-up position, and about 2.5
V or less in the fully-down posi-
tion.
• Faulty steering column position
sensors
• An open in the wire
• Faulty steering column position
sensors
• An open in the wire
• Faulty steering column position
sensors
• An open in the wire
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Driving Position Memory System (DPMS)
Power Seat Control Unit Input Test
1. Remove the driver's power seat (see
).
2. Disconnect the power seat 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 con-
trol units, and check for opens or shorts in the communication lines.
• All connector views are from wire side of female terminals.
12P CONNECTOR "A"
POWER SEAT CONTROL UNIT
DRIVER'S POWER
SEAT
BLK/WHT
BLK
LT GRN/RED
GRN/BLK
BLK/YEL
WHT/YEL
16P CONNECTOR "B"
GRN/BLU
WHT/YEL
BLU
GRN/ORN
YEL/GRN
YEL/BLK
WHT
WHT/RED
BRN
ORN/BLU
ORN/GRN
RED/BLK
BRN/BLK
12P CONNECTOR "C"
BLK GRN RED YEL RED/WHT
BLK
BLU/GRN
BRN/WHT
ORN
LT GRN
WHT/RED
GRY
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Cavity Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
A5
A6
C5
C12
A12
C1
C6
B16
B4
B16
•
B12
B16
•
B3
B16
•
B11
BLK/YEL
WHT/YEL
RED/WHT
WHT/RED
BLK
BLK
BLK
BRN
•
GRN/BLU
BRN
•
RED/BLK
BRN
*
GRN/ORN
BRN
BRN/BLK
Ignition switch ON (II)
Under all conditions
Under all conditions
Under all conditions
Under all conditions
Front up-down switch
"UP"
Front up-down switch in
the neutral position
Front up-down switch
"Down"
Front up-down switch in
the neutral position
Rear up-down switch
"UP"
Rear up-down switch
in the neutral position
Rear up-down switch
"Down"
Rear up-down switch
in the neutral position
Check for voltage to ground:
There should be battery voltage.
Check for continuity to ground:
There should be continuity.
Check for continuity between the
B4 and B16 terminals:
There should be continuity.
Check for continuity between the
B4 and B16 terminals:
There should be no continuity.
Check for continuity between the
B12 and B16 terminals:
There should be continuity.
Check for continuity between the
B12 and B16 terminals:
There should be no continuity.
Check for continuity between the
B3 and B16 terminals:
There should be continuity.
Check for continuity between the
B3 and B16 terminals:
There should be no continuity.
Check for continuity between the
B11 and B16 terminals:
There should be continuity.
Check for continuity between the
B11 and B16 terminals:
There should be no continuity.
• 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. 11 (20 A) fuse in the
under-dash fuse/relay box
• An open in the wire
• Blown No. 8 (20 A) fuse in the
under-dash fuse/relay box
• An open in the wire
• Poor ground (G401, G402 or G251)
• An open in the wire
• Poor ground (G651, G681)
• An open in the wire
• Faulty adjustment switch
• An open in the wire
• Faulty adjustment switch
• A short in the wire
• Faulty adjustment switch
• An open in the wire
• Faulty adjustment switch
• A short in the wire
• Faulty adjustment switch
• An open in the wire
• Faulty adjustment switch
• A short in the wire
• Faulty adjustment switch
• An open in the wire
• Faulty adjustment switch
• A short in the wire
Main Menu
Table of Contents
Driving Position Memory System (DPMS)
Power Seat Control Unit Input Test (cont'd)
12P CONNECTOR "A"
BLK/WHT
BLK
12P CONNECTOR "C"
BLU
WHT
WHT/RED
Cavity Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
B16
•
B6
B16
•
B14
B16
•
B5
B16
•
B13
BRN
•
BLU
BRN
•
ORN/BLU
BRN
•
WHT/YEL
BRN
•
ORN/GRN
Slide switch
"Forward"
Slide switch in the
neutral position
Slide switch
"Backward"
Slide switch in the
neutral position
Recline switch
"Forward"
Recline switch in the
neutral position
Recline switch
"Backward"
Recline switch in the
neutral position
Check for continuity between the
B6 and B16 terminals:
There should be continuity.
Check for continuity between the
B6 and B16 terminals:
There should be no continuity.
Check for continuity between the
B14 and B16 terminals:
There should be continuity.
Check for continuity between the
B14 and B16 terminals:
There should be no continuity.
Check for continuity between the
B5 and B16 terminals:
There should be continuity.
Check for continuity between the
B5 and B16 terminals:
There should be no continuity.
Check for continuity between the
B13 and B16 terminals:
There should be continuity.
Check for continuity between the
B13 and B16 terminals:
There should be no continuity.
• Faulty adjustment switch
• An open in the wire
• Faulty adjustment switch
• A short in the wire
• Faulty adjustment switch
• An open in the wire
• Faulty adjustment switch
• A short in the wire
• Faulty adjustment switch
• An open in the wire
• Faulty adjustment switch
• A short in the wire
• Faulty adjustment switch
• An open in the wire
• Faulty adjustment switch
• A short in the wire
BRN/BLK
RED/BLK
ORN/GRN
ORN/BLU
BRN
GRN/BLK
LT GRN/RED
BLK/YEL
WHT/YEL
16P CONNECTOR "B"
GRN/BLU
WHT/YEL
GRN/ORN
YEL/GRN
YEL/BLK
BLK GRN RED YEL RED/WHT
BLK
BLU/GRN
BRN/WHT
ORN
GRY
LT GRN
WHT/RED
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