INFINITI QX56 2008 Factory Service Manual

THIRD SEATSE-19
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Third Row Power Folding Seat SwitchINFOID:0000000001735719
1.CHECK THIRD ROW POWER FOLD ING SEAT SWITCH OPERATION
1. Turn ignition switch OFF.
2. Disconnect third row power folding seat switch.
3. Check continuity between third row power folding seat switch terminals 2, 3 and 4.
Do you have continuity?
YES >> Inspection End.
NO >> Replace third row power folding seat switch.
Third Row Power Folding Seat MotorINFOID:0000000001735720
1.CHECK MOTOR OPERATION
1. Turn ignition switch OFF.
2. Disconnect third row power folding seat motor connector B403 or B426.
3. Check operation by applying battery voltage to motor terminals 3 and 4.
CAUTION:
• Do not operate motor for more than 3 seconds.
• Be careful not to overheat the harness.
• Third row power folding seat control unit may have to
relearn fold up/down positions after testing.
Does the motor rotate in both directions?
YES >> GO TO 2.
NO >> Replace third row power seat motor. Refer to SE-60, "
Exploded View".
2.CHECK RESISTANCE IN MOTOR
Terminals Condition Continuity
2 4 Press switch button to fold up. Yes
3 4 Press switch button to fold down. Yes
ALJIA0089ZZ
LH (60%) seat
Terminal MotorSeat
3 (Battery positive) - 4 (Battery negative) Rotates counter-clockwise Up
4 (Battery positive) - 3 (Battery negative) Rotates clockwise Down
AWJIA0359ZZ
RH (40%) seat
Terminal MotorSeat
3 (Battery positive) - 4 (Battery negative) Rotates counter-clockwise Down
4 (Battery positive) - 3 (Battery negative) Rotates clockwise Up
Revision: March 2010 2008 QX56

SE-20
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THIRD SEAT
Check resistance between motor terminals 3 and 4.
Is the resistance reading of the motor normal?
YES >> Inspection End.
NO >> Replace third row power seat motor. Refer to SE-60,
"Exploded View".
3 - 4 : Approx. 0.5
Ω
AWJIA0360ZZ
Revision: March 2010 2008 QX56

THIRD ROW POWER FOLDING SEAT CONTROL UNITSE-21
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ECU DIAGNOSIS
THIRD ROW POWER FOLD ING SEAT CONTROL UNIT
Reference ValueINFOID:0000000001735721
TERMINAL LAYOUT
PHYSICAL VALUES
ALJIA0277ZZ
Te r m i n a l N o .
Wire
color Description
ConditionVoltage (V)
(Approx.)
+ - Signal nameInput/
Output
1 Ground Y/R Battery Input— Battery voltage
3Ground LG 40% seat switch signal
(down) OutputPush either third row power fold-
ing seat switch passenger (down) 0
Third row power folding seat switch passenger released Battery voltage
4Ground V 60% seat switch signal
(down) OutputPush either third row power fold-
ing seat switch driver (down) 0
Third row power folding seat switch driver released Battery voltage
7 Ground G/R Park signal InputA/T selector lever in P or N
Battery voltage
A/T selector lever not in P or N 0
8 Ground O/L Ignition signal InputIgnition switch ON or START
Battery voltage
Ignition switch OFF 0
9 Ground G/B 40% seat Hall signal Input —9V
10 Ground O/B 60% seat Hall signal Input —9V
11 Ground SB 40% seat switch signal (up) Output Push either third row power fold-
ing seat switch passenger (up) 0
Third row power folding seat switch passenger released Battery voltage
12 Ground O 60% seat switch signal (up) Output Push either third row power fold-
ing seat switch driver (up) 0
Third row power folding seat switch driver released Battery voltage
13 Ground W Battery Input— Battery voltage
14 Ground W Battery Input— Battery voltage
15 Ground Y/B Hall switch ground —— —
16 Ground B Switch ground —— —
17 Ground W/L 60% Seat motor Output— Battery voltage
18 Ground B Ground —— —
19 Ground R/W 60% Seat motor Output— Battery voltage
Revision: March 2010 2008 QX56

SE-22
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THIRD ROW POWER FOLDING SEAT CONTROL UNIT
20 Ground G/W 40% Seat motorOutput— Battery voltage
21 Ground B Ground —— —
22 Ground V 40% Seat motor Output— Battery voltage
Te r m i n a l N o .
Wire
color Description
ConditionVoltage (V)
(Approx.)
+ - Signal nameInput/
Output
Revision: March 2010 2008 QX56

THIRD ROW POWER FOLDING SEAT CONTROL UNITSE-23
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Wiring DiagramINFOID:0000000001735722
AAJWA0044GB
Revision: March 2010 2008 QX56

SE-24
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THIRD ROW POWER FOLDING SEAT CONTROL UNIT
ALJIA0065GB
Revision: March 20102008 QX56

THIRD ROW POWER FOLDING SEAT CONTROL UNITSE-25
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ALJIA0066GB
Revision: March 2010 2008 QX56

SE-26
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THIRD ROW POWER FOLDING SEAT CONTROL UNIT
ALJIA0067GB
Revision: March 20102008 QX56

THIRD ROW POWER FOLDING SEAT CONTROL UNITSE-27
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AAJIA0063GB
Revision: March 2010 2008 QX56

SE-28
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THIRD ROW POWER FOLDING SEAT CONTROL UNIT
DTC Index
INFOID:0000000001735723
NOTE:
To initiate a chime code sequence cycle, turn the ignition switch ON and OFF 3 times within 5 seconds. The
first digit will chime, then a pause, followed by the second digit. For example, a code 13 will have 1 chime, fol-
lowed by a pause, and then 3 chimes. The third row pow er folding seat control unit will clear all codes that
have been corrected after 255 ignition cycles.
ALJIA0094GB
Revision: March 2010 2008 QX56