2011 INFINITI QX56 display

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

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

DIAGNOSIS AND REPAIR WORK FLOWWT-25
< BASIC INSPECTION >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow INFOID:0000000006225501
DETAILED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER
It is also important to clarify customer concerns before starting the inspection. Reproduce the symptom, and
understand it fully. Interview the customer about the concer ns carefully. In some cases, it is necessary to
check the symptoms by driving the vehicle with the customer.
CAUTION:
Customers are not professionals. Never assume“mayb e the customer means...” or “maybe the cus-
tomer mentioned this symptom.
>> GO TO 2.
2.BASIC INSPECTION
1. Turn the ignition switch ON. CAUTION:
Never start the engine.
2. Check the tire pressure for all wheels and adjust to the specified value. Refer to WT-69, "
Tire Air Pres-
sure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Inspect or repair the tires or wheels.
3.CHECK LOW TIRE PRESSURE WARNING LAMP STATUS
Check low tire pressure warning lamp display.
Does not low tire pressure warning lamp turn OFF?
YES >> GO TO 4.
NO >> GO TO 8.
4.CHECK DTC WITH LOW TIRE PR ESSURE WARNING CONTROL UNIT
With CONSULT-III
Perform the self-diagnosis fo r “AIR PRESSURE MONITOR”.
Is any DTC detected?
YES >> GO TO 5.
NO >> GO TO 8.
5.ERASE DTC MEMORY
With CONSULT-III
1. Record DTC.
2. Erase DTC once.
NOTE:
After erasing DTC record, currently occurr ed DTC can be detected by reading out DTC again.
>> GO TO 6.
6.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) with recorded DTC.
If two or more DTCs are detected, refer to WT-17, "
DTC Inspection Priority Chart" and determine trouble diag-
nosis order.
Is any malfunction detected by self-diagnosis?
YES >> GO TO 7.
Revision: 2010 May2011 QX56

WT-26
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
NO >> GO TO 8.
7.DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE
Perform the diagnosis applicable to the displayed DTC. Refer to WT-18, "
DTC Index".
>> GO TO 10.
8.CRUISE FOR SYMPTOM CHECK
1. Start the engine.
2. Drive for several minutes at a speed of 40 km /h (25 MPH) or more, then stop the vehicle.
>> GO TO 9.
9.PERFORM DIAGNOSIS BY SYMPTOM
Perform trouble diagnosis or repair applicable to the symptom. Refer to WT-53, "
Symptom Table".
>> GO TO 11.
10.FINAL CHECK (WHEN DTC WAS DETECTED)
With CONSULT-III
Perform “DTC CONFIRMATION PROCE DURE” (self-diagnosis) with applicable DTC.
Is any malfunction detec ted by self-diagnosis?
YES >> GO TO 7.
NO >> INSPECTION END
11 .FINAL CHECK (WHEN SYMPTOM OCCURRED)
Make sure that the symptom is not detected.
Does symptom remain?
YES >> GO TO 9.
NO >> INSPECTION END
Revision: 2010 May2011 QX56

ID REGISTRATIONWT-29
< BASIC INSPECTION >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
ID REGISTRATION
DescriptionINFOID:0000000006225506
When replacing or rotating wheels, replacing transmitter or low tire pressure warning control unit, always
transmitter ID registration is required.
Work ProcedureINFOID:0000000006225507
1.CONFIRMATION OF TRANSMITTER ACTIVATION TOOL USE
Check method of ID registration procedure.
Is the transmitter activation tool (J-45295) us ed for the transmitter ID registration procedure?
YES >> GO TO 2.
NO >> GO TO 3.
2.TRANSMITTER ID REGISTRATION PROCEDURE (W ITH THE TRANSMITTER ACTIVATION TOOL)
With CONSULT-III
1. Turn the ignition switch ON.
2. Display the “WORK SUPPORT” screen for “AIR PRESSURE MONITOR” and select “ID REGIST”.
3. Press the transmitter activation tool (J-45295) (1) against the
side of the tire at the location closest to the transmitter.
4. Wait until the indicator lamp turns OFF (approximately 5 sec- onds).
CAUTION:
Perform the ID registration procedure starting from the
vehicle front left wheel, then repeat the procedure in the
order of the front right wheel, rear right wheel, and rear left
wheel.
5. When ID registration is completed, check the following pattern at
each wheel.
6. After the ID registration procedure for all wheels is completed, press “End” to end ID registration, and
check that ID registration for all wheels is completed.
Is the check result normal?
YES >> ID registration END.
NO >> Perform the self-diagnosis for “AIR PRESSURE MONITOR”. Refer to WT-18, "
DTC Index".
3.TRANSMITTER ID REGISTRATION PROCEDURE (WITHOUT THE TRANSMITTER ACTIVATION TOOL)
With CONSULT-III
1. Display the “WORK SUPPORT” screen for “AIR PRESSURE MONITOR” and select “ID REGIST”.
2. Adjust the tire pressure for all wheels to match the list below.
3. Drive the vehicle at a speed at more than 40 km/h (25 MPH) for 3 minutes or more, then perform the
transmitter ID registration procedure.
4. After ID registration for all wheels is completed, press “End” to end ID registration.
Sequence ID registration position Hazard warning lamp CONSULT-III
1 Front LH
2 blinks“Red”
↓
“Green”
2Front RH
3Rear RH
4 Rear LH
NNEIC0020ZZ
Tire position
Tire pressure kPa (kg/cm2, psi)
Front LH 240 (2.4, 34)
Front RH 220 (2.2, 31) Rear RH 200 (2.0, 29)Rear LH 180 (1.8, 26)
Revision: 2010 May2011 QX56

C1704, C1705, C1706, C1707 LOW TIRE PRESSURE
WT-31
< DTC/CIRCUIT DIAGNOSIS >
C
D F
G H
I
J
K L
M A
B
WT
N
O P
DTC/CIRCUIT DIAGNOSIS
C1704, C1705, C1706, C1707 LOW TIRE PRESSURE
DTC LogicINFOID:0000000006225508
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION
With CONSULT-III
1. Turn the ignition switch ON.
CAUTION:
Never start the engine.
2. Check the tire pressure for all wheels and adjust to the specified value. Refer to WT-69, "
Tire Air Pres-
sure".
3. Perform self-diagnosis for “AIR PRESSURE MONITOR”.
Is DTC
“C1704”, “C1705”, “C1706”, or “C1707” detected?
YES >> Proceed to WT-31, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225509
1.CHECK TIRE PRESSURE
Check the air pressure of all wheels. Refer to WT-69, "
Tire Air Pressure".
Is the inspection result normal?
YES >> Replace the DTC-detected malfunctioning transmitter. Refer to WT-66, "Removal and Installa-
tion".
NO >> After adjusting the air pressure, GO TO 2.
2.CHECK TIRE PRESSURE SIGNAL
With CONSULT-III
1. Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more, then drive normally for 10 minutes.
2. Stop the vehicle.
3. Select “DATA MONITOR” for “AIR PRESSURE MONITOR” with CONSULT-III.
4. Within 5 minutes after vehicle stopped, check t hat the tire pressures match the standard value.
Is the inspection result normal?
YES >> INSPECTION END
DTC Display Item Malfunction detected condition Possible causes
C1704 LOW PRESSURE FL Front LH wheel pressure drops to 189 kPa (1.93 kg/cm
2, 27.4 psi)
or less
Low tire pressure
C1705 LOW PRESSURE FR
Front RH wheel pressure drops to 189 kPa (1.93 kg/cm
2, 27.4 psi)
or less
C1706 LOW PRESSURE RR Rear RH wheel pressure drops to 189 kPa (1.93 kg/cm
2, 27.4 psi)
or less
C1707 LOW PRESSURE RL Rear LH wheel pressure drops to 189 kPa (1.93 kg/cm
2, 27.4 psi) or
less
Monitor item Displayed value
AIR PRESS FL Approximately equal to the indication on tire gauge value for front LH tire
AIR PRESS FR Approximately equal to the indication on tire gauge value for front RH tire
AIR PRESS RR Approximately equal to the indica tion on tire gauge value for rear RH tire
AIR PRESS RL Approximately equal to the indication on tire gauge value for rear LH tire
Revision: 2010 May2011 QX56

C1708, C1709, C1710, C1711 TRANSMITTER (NO DATA)
WT-33
< DTC/CIRCUIT DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
C1708, C1709, C1710, C1711 TRANSMITTER (NO DATA)
DTC LogicINFOID:0000000006225510
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION
With CONSULT-III
1. Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more, then drive normally for 10 minutes.
2. Stop the vehicle.
3. Perform self-diagnosis for “AIR PRESSURE MONITOR”.
Is DTC
“C1708”, “C1709”, “C1710” or “C1711” detected?
YES >> Proceed to WT-33, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225511
1.CHECK TIRE PRESSURE SIGNAL
With CONSULT-III
1. Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more, then drive normally for 10 minutes.
2. Stop the vehicle.
3. Select “DATA MONITOR” for “AIR PRESSURE MONITOR” with CONSULT-III.
4. Within 5 minutes after vehicle stopped, read the val ues that are displayed for “AIR PRESS FL”, “AIR
PRESS FR”, “AIR PRESS RR”, and “AIR PRESS RL”.
Are all tire pressures displayed 0 kPa (psi)?
YES >> GO TO 2.
NO >> GO TO 5.
2.CHECK RECEIVER CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect low tire pressure warning control unit harness connector and tire pressure receiver harness connector.
3. Check the continuity between low tire pressure warning control unit harness connector and tire pressure
receiver harness connector.
CHECK RECEIVER POWER CIRCUIT
DTC Display Item Malfunction detected condition Possible causes
C1708 [NO DATA] FL Tire pressure data signal from the front LH wheel
transmitter cannot be detected.
 Harness or connector connec-
tion malfunction
(Tire pressure re ceiver, low tire
pressure warning control unit)
 Transmitter ID registration in-
complete
 Transmitter malfunction
 Transmitter battery voltage
C1709 [NO DATA] FR
Tire pressure data signal from the front RH wheel
transmitter cannot be detected.
C1710 [NO DATA] RR Tire pressure data signal from the rear RH wheel
transmitter cannot be detected.
C1711 [NO DATA] RL Tire pressure data signal from the rear LH wheel
transmitter cannot be detected.
Low tire pressure wa
rning control unit Tire pressure receiver
Continuity
Connector Terminal Connector Terminal
M96 10 E53 (Front LH)
1 Existed
9 E19 (Front RH)
8 B43 (Rear LH)
7 B212 (Rear RH)
Revision: 2010 May2011 QX56

C1708, C1709, C1710, C1711 TRANSMITTER (NO DATA)
WT-35
< DTC/CIRCUIT DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
CHECK RECEIVER GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunctioning harness or connector.
3.CHECK TIRE PRESSURE RECE IVER POWER SUPPLY CIRCUIT
1. Connect low tire pressure warning control unit harness connector.
2. Turn the ignition switch ON. CAUTION:
Never start the engine.
3. Check the voltage between tire pressure receiver harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace the low tire pressure warning control unit. Refer to WT-65, "
Removal and Installation".
4.TIRE PRESSURE RECEIVER SIGNAL
Check tire pressure receiver signal. Refer to WT-42, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace error-detected parts.
5.TRANSMITTER ID REGISTRATION
Perform transmitter ID registration. Refer to WT-29, "
Work Procedure".
Is transmitter ID registration completed?
YES >> GO TO 6.
NO >> Replace applicable transmitter. Refer to WT-66, "
Removal and Installation".
6.CHECK TIRE PRESSURE SIGNAL
With CONSULT-III
1. Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more, then drive normally for 10 minutes.
2. Stop the vehicle.
3. Select “DATA MONITOR” for “AIR PRESSURE MONITOR” with CONSULT-III.
4. Within 15 minutes after vehicle stopped, check t hat the tire pressures match the standard value.
Is the inspection result normal?
Low tire pressure warning control unit
—Continuity
Connector Terminal
M96 26
Ground Not existed
25
24
23
Tire pressu
re receiver
—Voltage
Connector Terminal
E53 (Front LH)
1 Ground Approx. 9 - 16 V
E19 (Front RH)
B43 (Rear LH)
B212 (Rear RH)
Monitor item Displayed value
AIR PRESS FL Approximately equal to the indication on tire gauge value for front LH tire
AIR PRESS FR Approximately equal to the indication on tire gauge value for front RH tire
AIR PRESS RR Approximately equal to the indica tion on tire gauge value for rear RH tire
AIR PRESS RL Approximately equal to the indication on tire gauge value for rear LH tire
Revision: 2010 May2011 QX56