Driving Position Memory System (Door Multiplex Control Unit and Power Seat Control Unit) Input Test
Power Seat Control Unit

NOTE:
SRS components are located in this area. Review the SRS component locations, and precautions and procedures before doing repairs or servicing.
Before testing, make sure the No. A2-2 (60 A) and No. A21 (10 A) fuses in the under-hood fuse/relay box are OK.
Before testing, make sure the No. B5 (7.5 A), No. B7 (7.5 A) , No. B15 (20 A), and No. B36 (20 A) fuses in the under-dash fuse/relay box are OK.
Before testing, check for DTCs. If any DTCs are indicated, troubleshoot those DTCs first.

1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

2.
NOTE: All connector views are shown from the wire side of the female terminals.
3.
Inspect the connectors 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, go to step 4.

4.
With the connectors still disconnected, do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 5.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
B13
BLK/YEL*1
PNK*2
Ignition switch to ON (II), or power mode ON
Measure the voltage to ground:
There should be battery voltage.
Blown No. B7 (7.5 A) fuse in the under-dash fuse/relay box
An open or high resistance in the wire
A6
PUR*1
LT BLU*2
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
Blown No. A2-2 (60 A) fuse in the under-hood fuse/relay box
Blown No. B36 (20 A) fuse in the under-dash fuse/relay box
Faulty under-hood fuse/relay box
Faulty under-dash fuse/relay box
An open or high resistance in the wire
A12
LT BLU*1
PNK*2
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
Blown No. A2-2 (60 A) fuse in the under-hood fuse/relay box
Blown No. B15 (20 A) fuse in the under-dash fuse/relay box
Faulty under-hood fuse/relay box
Faulty under-dash fuse/relay box
An open or high resistance in the wire
B11
BLU
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
Blown No. A21 (10 A) fuse in the under-hood fuse/relay box
Faulty under-hood fuse/relay box
Faulty under-dash fuse/relay box
An open or high resistance in the wire
A2
PNK*1
GRY*2
Under all conditions
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G651)
An open or high resistance in the ground wire
A5
BRN*1
BLK*2
Under all conditions
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G651)
An open or high resistance in the ground wire
B20
GRY*1
GRN*2
Under all conditions
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G651)
An open or high resistance in the ground wire
B1*3
BLK/BLU*1
PUR*2
Shift lever in P position
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty transmission range switch
Poor ground (G101) or an open in the ground wire
Shift lever in any position other than P
Measure the voltage to ground:
There should be at least about 10 V.
Faulty transmission range switch
A short to ground in the wire
B1*4
BLK/BLU*1
PUR*2
Parking brake lever pulled
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty parking brake switch
Faulty parking brake switch ground
An open or high resistance in the wire
Parking brake lever released
Measure the voltage to ground:
There should be at least about 10 V.
Faulty parking brake switch
A short to ground in the wire
A1
?
A3
WHT
?
YEL
Under all conditions
Connect terminals A1 and A6, and terminals A3 and A2:
The seat should slide backward.
Faulty slide motor
An open or high resistance in the wire
Connect terminals A1 and A2, and terminals A3 and A6:
The seat should slide forward.
A8
?
A11
GRY
?
RED
Under all conditions
Connect terminals A8 and A5, and terminals A11 and A12:
The seat should recline backward.
Faulty recline motor
An open or high resistance in the wire
Faulty limit switch*1
Connect terminals A8 and A12, and terminals A11 and A5:
The seat should recline forward.
A7
?
A10
YEL*1
BLU*2
?
ORN
Under all conditions
Connect terminals A7 and A6, and terminals A10 and A2:
The front of the seat should move down.
Faulty front up-down motor
An open or high resistance in the wire
Connect terminals A7 and A2, and terminals A10 and A6:
The front of the seat should move up.
A4
?
A9
WHT*1
BRN*2
?
GRN
Under all conditions
Connect terminals A4 and A5, and terminals A9 and A12:
The rear of the seat should move up.
Faulty rear up-down motor
An open or high resistance in the wire
Connect terminals A4 and A12, and terminals A9 and A5:
The rear of the seat should move down.
*1: 2-door
*2: 4-door
*3: A/T, CVT
*4: M/T

5.
Reconnect the connectors, and do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, replace the power seat control unit.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
B6
PUR
Ignition switch to ON (II), or power mode ON
Measure the voltage to ground:
There should be at least about 10 V.
Faulty power seat control unit
Faulty position sensor
A short to ground in the wire
B10
?
B19
GRN
?
WHT
Run the recline motor
Measure the voltage between terminals B10 (?) and B19 (?):
There should be about 2.5 V average.
Faulty position sensor
An open or high resistance in the wire
A short to ground in the wire
B8
?
B19
BRN
?
WHT
Run the slide motor
Measure the voltage between terminals B8 (?) and B19 (?):
There should be about 2.5 V average.
Faulty position sensor
An open or high resistance in the wire
A short to ground in the wire
B7
?
B19
PNK
?
WHT
Run the front up-down motor
Measure the voltage between terminals B7 (?) and B19 (?):
There should be about 2.5 V average.
Faulty position sensor
An open or high resistance in the wire
A short to ground in the wire
B9
?
B19
YEL
?
WHT
Run the rear up-down motor
Measure the voltage between terminals B9 (?) and B19 (?):
There should be about 2.5 V average.
Faulty position sensor
An open or high resistance in the wire
A short to ground in the wire
Door Multiplex Control Unit

6.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

7.
Disconnect the power window master switch 37P connector.


8.
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, go to step 9.
9.
With the connector still disconnected, do the following input tests:
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 10.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
4
WHT
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
Blown No. A12-1 (60 A) fuse in the under-hood fuse/relay box
Blown No. B32 (20 A) fuse in the under-dash fuse/relay box
Faulty under-hood fuse/relay box
Faulty under-dash fuse/relay box
An open or high resistance in the wire
26
WHT
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
Blown No. A21 (10 A) fuse in the under-hood fuse/relay box
Faulty under-hood fuse/relay box
Faulty under-dash fuse/relay box
An open or high resistance in the wire
25
LT GRN
Ignition switch to ON (II), or power mode ON
Measure the voltage to ground:
There should be battery voltage.
Blown No. B1 (7.5 A) fuse in the under-dash fuse/relay box
Faulty under-dash fuse/relay box
An open or high resistance in the wire
3
BLK
In all ignition switch positions or all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G501)
An open or high resistance in the wire
31
BLK
In all ignition switch positions or all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G501)
An open or high resistance in the ground wire
23
RED
Ignition switch to ON (II), or power mode ON, position 2 switch pressed
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty driving position memory switch
Poor ground (G501) or an open in the ground wire
An open or high resistance in the wire
Ignition switch to ON (II), or power mode ON, position 2 switch released
Measure the voltage to ground:
There should be about 5 V.
Faulty driving position memory switch
A short to ground in the wire
22
GRY
Ignition switch to ON (II), or power mode ON, position 1 switch pressed
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty driving position memory switch
Poor ground (G501) or an open in the ground wire
An open or high resistance in the wire
Ignition switch to ON (II), or power mode ON, position 1 switch released
Measure the voltage to ground:
There should be about 5 V.
Faulty driving position memory switch
A short to ground in the wire
20
YEL
Ignition switch to ON (II), or power mode ON, set switch pressed
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty driving position memory switch
Poor ground (G501) or an open in the ground wire
An open or high resistance in the wire
Ignition switch to ON (II), or power mode ON, set switch released
Measure the voltage to ground:
There should be about 5 V.
Faulty driving position memory switch
A short to ground in the wire
12
GRN
Under all conditions
Connect terminals No. 4 and No. 12 with a jumper wire: The driving position memory switch indicator 2 should come on.
Faulty LED
Faulty driving position memory switch
Poor ground (G501) or an open in the ground wire
An open or high resistance in the wire
10
PUR
Under all conditions
Connect terminals No. 4 and No. 10 with a jumper wire: The driving position memory switch indicator 1 should come on.
Faulty LED
Faulty driving position memory switch
Poor ground (G501) or an open in the ground wire
An open or high resistance in the wire
37
PNK
Under all conditions
Connect terminals No. 4 and No. 37 with a jumper wire: The driving position memory switch lights should come on.
Faulty LED
Faulty driving position memory switch
Poor ground (G501) or an open in the ground wire
An open or high resistance in the wire

10.
If multiple failures are found on more than one control unit, replace the power seat control unit. If input failures are related to a particular control unit, replace the control unit.