Infiniti QX56 (Z62). Manual — part 1367
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
Terminal No.
(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 ON
Standby 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 ON
Standby status
Approx. 4.5 V
When signal is
received
Approx. 4.5 V
OCC3879D
OCC3880D
OCC3879D
OCC3880D
WT-16
< ECU DIAGNOSIS INFORMATION >
LOW TIRE PRESSURE WARNING CONTROL UNIT
5
(R/L)
Ground
Tire pressure receiver front
RH signal
Input
Ignition switch ON
Standby 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 ON
Standby status
Approx. 4.5 V
When signal is
received
Approx. 4.5 V
7
(SB)
Ground
Tire pressure receiver rear
RH power supply*
Output
Ignition switch ON
Approx. 9 - 16 V
Ignition switch OFF
0 V
8
(GR)
Ground
Tire pressure receiver rear
LH power supply*
Output
Ignition switch ON
Approx. 9 - 16 V
Ignition switch OFF
0 V
9
(R/W)
Ground
Tire pressure receiver front
RH power supply*
Output
Ignition switch ON
Approx. 9 - 16 V
Ignition switch OFF
0 V
10
(LG)
Ground
Tire pressure receiver front
LH power supply*
Output
Ignition 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)
Input
Ignition switch ON
Approx. 0.7 V
Ignition switch OFF
0 V
20
(P)
Ground
Tire pressure receiver rear
LH signal (sensitivity)
Input
Ignition switch ON
Approx. 0.7 V
Ignition switch OFF
0 V
Terminal No.
(Wire color)
Description
Condition
Value (Approx.)
Signal name
Input/
Output
OCC3879D
OCC3880D
OCC3879D
OCC3880D
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 Chart
INFOID:0000000006225498
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority-
chart.
21
(G/R)
Ground
Tire pressure receiver front
RH signal (sensitivity)
Input
Ignition switch ON
Approx. 0.7 V
Ignition switch OFF
0 V
22
(BR/Y)
Ground
Tire pressure receiver front
LH signal (sensitivity)
Input
Ignition 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)
Ground
Tire pressure receiver front
LH ground
Input
Always
0 V
32
(B)
Ground
Ground
—
Always
0 V
Terminal No.
(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)
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
C1705
LOW PRESSURE FR
C1706
LOW PRESSURE RR
C1707
LOW PRESSURE RL
C1708
[NO DATA] FL
C1709
[NO DATA] FR
C1710
[NO DATA] RR
C1711
[NO DATA] RL
C1716
[PRESSDATA ERR] FL
C1717
[PRESSDATA ERR] FR
C1718
[PRESSDATA ERR] RR
C1719
[PRESSDATA ERR] RL
C1728
RECEIVER ID NO REG
C1729
VHCL SPEED SIG ERR
C1750
[RECEIVER ERR] FL
C1751
[RECEIVER ERR] FR
C1752
[RECEIVER ERR] RR
C1753
[RECEIVER ERR] RL
C1754
CONT UNIT (EEPROM)
C1755
PR RECEIV COND FL
C1756
PR RECEIV COND FR
C1757
PR RECEIV COND RR
C1758
PR RECEIV COND RL
U1000
CAN COMM CIRCUIT
U1010
CONTROL UNIT (CAN)
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