Toyota Tundra (2015 year). Manual — part 2452
Last Modified: 9-16-2014
6.6 T
Doc ID: RM000002Y3G00AX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): PROBLEM SYMPTOMS TABLE; 2015 MY
Tundra [08/2014 - ]
PROBLEM SYMPTOMS TABLE
HINT:
SYMPTOM
SUSPECTED AREA
SEE
PAGE
Front power seat does not operate with front
power seat switch
Proceed to "Front Seat does not Operate with Front
Power Seat Switch"
One or more power seat motors do not
operate
Proceed to "One or more Power Seat Motors do not
Operate"
Power seat position is not memorized
Proceed to "Power Seat Position is not Memorized"
Power seat does not return to memorized
position
Proceed to "Power Seat does not Return to Memorized
Position"
Wireless transmitter memory function does
not operate
Proceed to "Wireless Transmitter Memory Function does
not Operate"
Wireless-linked return function does not
operate.
Proceed to "Wireless-linked Return Function does not
Operate"
Power seat power easy access system
function does not operate
Proceed to "Power Seat Power Easy Access System
Function does not Operate"
Only lumbar support operation function does
not operate
Harness or connector
-
Front power seat switch LH (lumbar support control)
Lumbar support adjuster assembly LH (lumbar motor)
Only leg support operation function does not
operate
Harness or connector
-
Front power seat switch LH (seat cushion control)
Front seat cushion frame sub-assembly LH (leg motor)
Front Power Seat Control System (for Front Passenger Side)
SYMPTOM
SUSPECTED AREA
SEE
PAGE
All functions do not operate
Harness or connector
-
Power seat switch assembly
Only slide operation function does not operate
Harness or connector
-
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): PR...
SYMPTOM
SUSPECTED AREA
SEE
PAGE
Power seat switch assembly
Front seat cushion frame sub-assembly RH (slide
motor)
Only reclining operation function does not operate
Harness or connector
-
Power seat switch assembly
Front seatback frame sub-assembly RH (reclining
motor)
Only lumbar support operation function does not
operate
Harness or connector
-
Front power seat switch LH (lumbar support
control)
Lumbar support adjuster assembly RH (lumbar
motor)
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): PR...
Last Modified: 9-16-2014
6.6 U
Doc ID: RM0000030Y700IX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): TERMINALS OF ECU; 2015 MY Tundra
[08/2014 - ]
TERMINALS OF ECU
1. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY
(a) Disconnect the Z9 and Z10 position control ECU and switch assembly connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.
TERMINAL NO.
(SYMBOLS)
WIRING
COLOR
TERMINAL DESCRIPTION
CONDITION
SPECIFIED
CONDITION
Z9-2 (GND1) - Body
ground
W-B - Body
ground
Ground
Always
Below 1 Ω
Z9-7 (+B1) - Z9-2
(GND1)
W - W-B
Battery (ECU power source)
Always
11 to 14 V
Z10-12 (SYSB) - Z9-2
(GND1)
LG - W-B
Battery (ECU power source)
Always
11 to 14 V
Z10-10 (DBCL) - Z10-1
(SGND)
P - BR
Front seat inner belt buckle
switch signal
Seat belt
unfastened
Below 1 Ω
Seat belt
fastened
10 kΩ or higher
(c) Reconnect the Z9 and Z10 position control ECU and switch assembly connectors.
(d) Measure the voltage and resistance according to the value(s) in the table below.
TERMINAL NO.
(SYMBOLS)
WIRING
COLOR
TERMINAL
DESCRIPTION
CONDITION
SPECIFIED
CONDITION
Z9-1 (GND2) -
Body ground
W-B - Body
ground
Lumbar support adjuster
ground
Always
Below 1 Ω
Z9-3 (SLD+) - Z9-2
(GND1)
L - W-B
Sliding motor signal
(forward)
Seat moving forward using
sliding switch
11 to 14 V
OFF
Below 1 V
Z9-4 (SLD-) - Z9-2
(GND1)
GR - W-B
Sliding motor signal
(rearward)
Seat moving rearward using
sliding switch
11 to 14 V
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): TE...
TERMINAL NO.
(SYMBOLS)
WIRING
COLOR
TERMINAL
DESCRIPTION
CONDITION
SPECIFIED
CONDITION
OFF
Below 1 V
Z9-5 (FRV-) - Z9-2
(GND1)
R - W-B
Front Vertical motor
signal (downward)
Seat cushion front portion
downward using front vertical
switch
11 to 14 V
OFF
Below 1 V
Z9-6 (+B2) - Z9-1
(GND2)
LG - W-B
Lumbar support adjuster
power source
Always
11 to 14 V
Z9-8 (FRV+) - Z9-2
(GND1)
B - W-B
Front vertical motor
signal (upward)
Seat cushion front portion
upward using front vertical
switch
11 to 14 V
OFF
Below 1 V
Z9-9 (RCL+) - Z9-2
(GND1)
LG - W-B
Reclining motor signal
(forward)
Seatback moving forward using
reclining switch
11 to 14 V
OFF
Below 1 V
Z9-10 (LFT+) -
Z9-2 (GND1)
V - W-B
Lift or motor signal
(upward)
Seat cushion upward using lifter
switch
11 to 14 V
OFF
Below 1 V
Z9-11 (RCL-) -
Z9-2 (GND1)
P - W-B
Reclining motor signal
(rearward)
Seatback moving rearward using
reclining switch
11 to 14 V
OFF
Below 1 V
Z9-12 (LFT-) - Z9-2
(GND1)
Y - W-B
Lift or motor signal
(downward)
Seat cushion downward using
lifter switch
11 to 14 V
OFF
Below 1 V
Z10-1 (SGND) -
Body ground
BR - Body
ground
Position sensor ground
Always
Below 1 Ω
Z10-3 (SSFV) -
Z10-1 (SGND)
R - BR
Vertical position signal
Front vertical function operation
4.5 to 4.8 V
Z10-4 (SSRL) -
Z10-1 (SGND)
P - BR
Lift position signal
Lifter function operation
4.5 to 4.8 V
Z10-5 (SSRS) -
Z10-1 (SGND)
G - BR
Slide position signal
Slide function operation
4.5 to 4.8 V
Z10-11 (SSRR) -
Z10-1 (SGND)
O - BR
Reclining position signal
Reclining function operation
4.5 to 4.8 V
2. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): TE...
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