Page 5465 of 5598
LOW TIRE PRESSURE WARNING CONTROL UNIT
WT-15
< ECU DIAGNOSIS INFORMATION >
C
D F
G H
I
J
K L
M A
B
WT
N
O P
Te r m i n a l N o . (Wire color) Description
Condition Value (Approx.)
Signal name Input/
Output
1
(P) —CAN-L Input/
Output ——
2
(L) —CAN-H Input/
Output ——
3
(O/L) Ground Tire pressure receiver rear
RH signal Input Ignition switch ONStandby status
Approx. 4.5 V
When signal is
received Approx. 4.5 V
4
(L) Ground
Tire pressure receiver rear
LH signal Input Ignition switch ONStandby status
Approx. 4.5 V
When signal is
received Approx. 4.5 V
OCC3879D
OCC3880D
OCC3879D
OCC3880D
Revision: 2010 May2011 QX56
Page 5466 of 5598

WT-16
< ECU DIAGNOSIS INFORMATION >
LOW TIRE PRESSURE WARNING CONTROL UNIT
5
(R/L) Ground
Tire pressure receiver front
RH signal Input Ignition switch ONStandby status
Approx. 4.5 V
When signal is
received Approx. 4.5 V
6
(W/G) Ground Tire pressure receiver front
LH signal
Input Ignition switch ONStandby status
Approx. 4.5 V
When signal is
received Approx. 4.5 V
7
(SB) Ground Tire pressure receiver rear
RH power supply*
OutputIgnition switch ON Approx. 9 - 16 V
Ignition switch OFF 0 V
8
(GR) Ground Tire pressure receiver rear
LH power supply*
OutputIgnition switch ON Approx. 9 - 16 V
Ignition switch OFF 0 V
9
(R/W) Ground Tire pressure receiver front
RH power supply*
OutputIgnition switch ON Approx. 9 - 16 V
Ignition switch OFF 0 V
10
(LG) Ground Tire pressure receiver front
LH power supply*
OutputIgnition switch ON Approx. 9 - 16 V
Ignition switch OFF 0 V
15
(GR) Ground Power supply Input Ignition switch ON Battery voltage
Ignition switch OFF 0 V
19
(L/R) Ground Tire pressure receiver rear
RH signal (sensitivity) InputIgnition switch ON Approx. 0.7 V
Ignition switch OFF 0 V
20
(P) Ground Tire pressure receiver rear
LH signal (sensitivity) InputIgnition switch ON Approx. 0.7 V
Ignition switch OFF 0 V
Te r m i n a l N o .
(Wire color) Description
Condition Value (Approx.)
Signal name Input/
Output
OCC3879D
OCC3880D
OCC3879D
OCC3880D
Revision: 2010 May2011 QX56
Page 5467 of 5598

LOW TIRE PRESSURE WARNING CONTROL UNIT
WT-17
< ECU DIAGNOSIS INFORMATION >
C
D F
G H
I
J
K L
M A
B
WT
N
O P
*: Power is supplied to the tire pressure receiver from the low tire pressure warning control unit.
DTC Inspection Priority ChartINFOID:0000000006225498
If some DTCs are displayed at the same time, per form inspections one by one based on the following priority-
chart.
21
(G/R) Ground
Tire pressure receiver front
RH signal (sensitivity) InputIgnition switch ON Approx. 0.7 V
Ignition switch OFF 0 V
22
(BR/Y) Ground
Tire pressure receiver front
LH signal (sensitivity) InputIgnition switch ON Approx. 0.7 V
Ignition switch OFF 0 V
23
(V/W) Ground Tire pressure receiver rear
RH ground
Input Always 0 V
24
(R/B) Ground
Tire pressure receiver rear
LH ground Input Always 0 V
25
(W/L) Ground Tire pressure receiver front
RH ground Input Always 0 V
26
(BR/W) GroundTire pressure receiver front
LH ground
Input Always 0 V
32
(B) Ground Ground — Always 0 V
Te r m i n a l N o .
(Wire color) Description
Condition Value (Approx.)
Signal name Input/
Output
Priority Detected items (DTC)
1 U1000 CAN COMM CIRCUIT
U1010 CONTROL UNIT (CAN)
2 C1704 LOW PRESSURE FL
C1705 LOW PRESSURE FR
C1706 LOW PRESSURE RR
C1707 LOW PRESSURE RL
3 C1755 PR RECEIV COND FL
C1756 PR RECEIV COND FR
C1757 PR RECEIV COND RR
C1758 PR RECEIV COND RL
4 C1708 [NO DATA] FL
C1709 [NO DATA] FR
C1710 [NO DATA] RR
C1711 [NO DATA] RL
5 C1716 [PRESSDATA ERR] FL
C1717 [PRESSDATA ERR] FR
C1718 [PRESSDATA ERR] RR
C1719 [PRESSDATA ERR] RL
7 C1728 RECEIVER ID NO REG
8 C1729 VHCL SPEED SIG ERR
9 C1750 [RECEIVER ERR] FL
C1751 [RECEIVER ERR] FR
C1752 [RECEIVER ERR] RR
C1753 [RECEIVER ERR] RL
10 C1754 CONT UNIT (EEPROM)
Revision: 2010 May2011 QX56
Page 5468 of 5598

WT-18
< ECU DIAGNOSIS INFORMATION >
LOW TIRE PRESSURE WARNING CONTROL UNIT
DTC Index
INFOID:0000000006225499
NOTE:
If some DTCs are displayed at the same time, refer to WT-17, "
DTC Inspection Priority Chart".
DTC Items (CONSULT-III screen terms) Reference
C1704 LOW PRESSURE FL
WT-31, "
DTC Logic"C1705 LOW PRESSURE FR
C1706 LOW PRESSURE RR
C1707 LOW PRESSURE RL
C1708 [NO DATA] FLWT-33, "
DTC Logic"C1709 [NO DATA] FR
C1710 [NO DATA] RRC1711 [NO DATA] RL
C1716 [PRESSDATA ERR] FL
WT-37, "
DTC Logic"C1717 [PRESSDATA ERR] FR
C1718 [PRESSDATA ERR] RR
C1719 [PRESSDATA ERR] RL
C1728 RECEIVER ID NO REGWT-39, "
DTC Logic"
C1729 VHCL SPEED SIG ERRWT-41, "DTC Logic"
C1750 [RECEIVER ERR] FL
WT-42, "
DTC Logic"C1751 [RECEIVER ERR] FR
C1752 [RECEIVER ERR] RR
C1753 [RECEIVER ERR] RL
C1754 CONT UNIT (EEPROM)WT-45, "
DTC Logic"
C1755 PR RECEIV COND FL
WT-47, "
DTC Logic"C1756 PR RECEIV COND FR
C1757 PR RECEIV COND RR
C1758 PR RECEIV COND RL
U1000 CAN COMM CIRCUITWT-49, "
DTC Logic"
U1010 CONTROL UNIT (CAN)WT-50, "DTC Logic"
Revision: 2010 May2011 QX56
Page 5469 of 5598
TIRE PRESSURE MONITORING SYSTEMWT-19
< WIRING DIAGRAM >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
WIRING DIAGRAM
TIRE PRESSURE MO NITORING SYSTEM
Wiring DiagramINFOID:0000000006225500
JCEWM0214GB
Revision: 2010 May2011 QX56
Page 5470 of 5598
WT-20
< WIRING DIAGRAM >
TIRE PRESSURE MONITORING SYSTEM
JCEWM0215GB
Revision: 2010 May2011 QX56
Page 5471 of 5598
TIRE PRESSURE MONITORING SYSTEMWT-21
< WIRING DIAGRAM >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
JCEWM0216GB
Revision: 2010 May2011 QX56
Page 5472 of 5598
WT-22
< WIRING DIAGRAM >
TIRE PRESSURE MONITORING SYSTEM
JCEWM0217GB
Revision: 2010 May2011 QX56