2011 INFINITI QX56 fuse diagram

STC-14
< DTC/CIRCUIT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000006256125
1.CHECK POWER SUPPLY (1)
1. Turn the ignition switch OFF.
2. Disconnect power steering control unit harness connector.
3. Check the voltage between power steering control unit harness connector and ground.
4. Turn the ignition switch ON. CAUTION:
Never start the engine.
5. Check the voltage between power steering control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK POWER SUPPLY (2)
1. Turn the ignition switch OFF.
2. Check 10A fuse (#3).
3. Disconnect fuse block (J/B) harness connector.
4. Check the continuity between power steering cont rol unit harness connector and fuse block (J/B) harness
connector.
5. Check the continuity between power st eering control unit harness connector and ground.
Is the inspection result normal?
YES >> Perform trouble diagnosis for ignition power supply circuit. Refer to PG-89, "Wiring Diagram -
IGNITION POWER SUPPLY -".
NO >> Repair or replace damaged parts.
3.CHECK GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Check the continuity between power st eering control unit harness connector and ground.
Power steering control unit
—Voltage
Connector Terminal
M108 3 Ground 0 V
Power steering control unit — Voltage
Connector Terminal
M108 3 Ground Battery voltage
Power steering control unit Fuse block (J/B) Continuity
Connector Terminal Connector Terminal
M108 3 M1 2A Existed
Power steering control unit —Continuity
Connector Terminal
M108 3 Ground Not existed
Revision: 2010 May2011 QX56

TM-56
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
SYSTEM
Input/Output Signal Chart
*: This signal is transmitted via CAN communication line.
 The TCM receives the manual mode signal, non-manual mode signal, manual mode shift up signal and
manual mode shift down signal from combination meter via CAN communication line. The TCM shifts shift
pattern control to the manual mode based on these signal s, and then shifts the A/T by operating each sole-
noid valve according to the shift operation of the driver.
 The TCM prohibits the manual mode while being in fail-safe mode due to an A/T malfunction, etc. Refer to TM-74, "
Fail-Safe".
Manual Mode Information
 The TCM transmits the manual mode shift refusal signal to the combination meter if the TCM refuses the
transmission from the driving status of vehicle when the selector lever shifts to “UP (+ side)” or “DOWN (−
side)” side. The combination meter blinks shift indicator on the combination meter and sounds the buzzer to
indicate the driver that the shifting is not performed when receiving this signal. However, the TCM does not
transmit the manual mode shift refusal signal in the conditions as per the following.
- When the selector lever shifts to “DOWN ( − side)” side in 1GR.
- When the selector lever shifts to “UP (+ side)” side in 7GR.
LOCK-UP CONTROL
LOCK-UP CONTROL : System DiagramINFOID:0000000006226777
LOCK-UP CONTROL : System DescriptionINFOID:0000000006226778
 The torque converter clutch piston in the torque conv erter is engaged to eliminate torque converter slip to
increase power transmission efficiency.
 Lock-up operation, however, is prohibited when A/T fluid temperature is too low.
 The torque converter clutch control valve operation is controlled by the torque converter clutch solenoid
valve, which is controlled by a signal from TCM, and the torque converter clutch control valve engages or
releases the torque converter clutch piston.
Item Signal TCM function Actuator
Output speed sensor Vehicle speed
Manual mode High and low reverse clutch
solenoid valve
 Direct clutch solenoid valve
 Input clutch solenoid valve
 Low brake solenoid valve
 2346 brake solenoid valve
 Front brake solenoid valve
 Torque converter clutch sole- noid valve
 Line pressure solenoid valve
 Anti-interlock solenoid valve
A/T fluid temperature sensor ATF temperature
ECM
Engine speed signal*
Accelerator pedal position sig-
nal*
Combination meter Manual mode signal*
Non-manual mode signal*
Manual mode shift up signal*
Manual mode shift down signal*
JSDIA1350GB
Revision: 2010 May2011 QX56

TM-152
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
MAIN POWER SUPPLY AND GROUND CIRCUIT
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace the control valve & TCM. Refer to TM-182, "Exploded View".
NO >> Repair or replace damaged parts.
6.DETECT MALFUNCTIONING ITEM (PART 1)
Check the following.
 Harness for short or open between battery positive term inal and A/T assembly vehicle side harness connec-
tor terminal 2. Refer to PG-11, "
Wiring Diagram - BATTERY POWER SUPPLY -".
Battery
 10A fuse (No.38, located in the fuse, fusible link and relay box). Refer to PG-141, "
Fuse and Fusible Link
Arrangement".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> Repair or replace damaged parts.
7.CHECK HARNESS BETWEEN IPDM E/ R AND A/T ASSEMBLY (PART 1)
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R vehicle side harness connector terminal and A/T assembly vehicle
side harness connector terminals.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace damaged parts.
8.CHECK HARNESS BETWEEN IPDM E/ R AND A/T ASSEMBLY (PART 2)
Check continuity between A/T assembly vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace damaged parts.
9.DETECT MALFUNCTIONING ITEM (PART 2)
Check the following.
 Harness for short or open between ignition switch and IPDM E/R. Refer to PG-89, "
Wiring Diagram - IGNI-
TION POWER SUPPLY -".
 Ignition switch
 10A fuse (No.55, located in the IPDM E/R). Refer to PG-143, "
Fuse, Connector and Terminal Arrangement".
 IPDM E/R
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> Repair or replace damaged parts.
IPDM E/R vehicle side harness connector A/T assembly vehicle side harness connector Continuity
Connector Terminal Connector Terminal
E15 57 F51 1
Existed
6
A/T assembly vehicle side harness connector
GroundContinuity
Connector Terminal
F51 1
Not existed
6
Revision: 2010 May2011 QX56

SHIFT LOCK SYSTEMTM-157
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
SHIFT LOCK SYSTEM
Component Function CheckINFOID:0000000006226882
1.CHECK A/T SHIFT LOCK OPERATION (PART 1)
1. Turn ignition switch ON.
2. Shift the selector lever to “P” position.
3. Attempt to shift the selector lever to any other position with the brake pedal released.
Can the selector lever be shifted to any other position?
YES >> Go to TM-157, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK A/T SHIFT LOCK OPERATION (PART 2)
Attempt to shift the selector lever to any other position with the brake pedal depressed.
Can the selector lever be shifted to any other position?
YES >> INSPECTION END
NO >> Go to TM-157, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006226883
1. CHECK POWER SOURCE
1. Turn ignition switch OFF.
2. Disconnect fuse block (J/B) connector.
3. Turn ignition switch ON.
4. Check voltage between fuse block (J/B) connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check the following.  10A fuse [No. 3, located in fuse block (J/B)]. Refer to PG-140, "
Fuse, Connector and Terminal
Arrangement".
 Harness for short or open between ignition switch and fuse block (J/B). Refer to PG-89, "
Wiring
Diagram - IGNITION POWER SUPPLY -".
 Ignition switch
2.CHECK HARNESS BETWEEN FUSE BLOCK (J/B ) AND STOP LAMP SWITCH (PART 1)
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch connector.
3. Check continuity between fuse block (J/B) vehicl e side harness connector terminal and stop lamp switch
vehicle side harness connector terminal.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK HARNESS BETWEEN FUSE BLOCK (J/B ) AND STOP LAMP SWITCH (PART 2)
Check continuity between stop lamp switch vehicle side harness connector terminal and ground.
Fuse block (J/B) connector
GroundVoltage (Approx.)
Connector Terminal
E103 4F Battery voltage
Fuse block (J/B) vehicle side harness connector Stop lamp switch vehicle side harness connector Continuity
Connector Terminal Connector Terminal
E103 4F E115 3 Existed
Revision: 2010 May2011 QX56

SELECTOR LEVER POSITION INDICATORTM-163
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> Repair or replace damaged parts.
9.CHECK POWER SOURCE (PART 2)
1. Turn ignition switch OFF.
2. Disconnect A/T shift selector connector.
3. Turn ignition switch ON.
4. Check voltage between A/T shift selector vehicle side harness connector terminals.
Is the inspection result normal?
YES >> GO TO 10.
NO >> Check illumination circuit. Refer to INL-34, "
Wiring Diagram".
10.CHECK SHIFT POSITION SWITCH (PART 2)
1. Disconnect shift position switch connector.
2. Check continuity between A/T shift selector connec tor terminals and shift position switch connector termi-
nals.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
Component Inspection (Selecto r Lever Position Indicator)INFOID:0000000006226889
1.CHECK SELECTOR LEVER POSITION INDICATOR
Check that selector lever position indicator lamps turn on.
CAUTION:
Connect the fuse between the termina ls when applying the voltage.
A/T shift selector vehicle side harness connector
Condition Voltage (Approx.)
Connector Te r m i n a l
+ −
M57 9 10 Lighting switch 1ST Battery voltage
A/T shift selector connector Shift position switch connector Continuity
Connector Terminal Connector Terminal
M57 9
M281 9Existed
1, 2, 3, 4, 5, 8, 10, 12 Not existed
10 8Existed
1, 2, 3, 4, 5, 9, 10, 12 Not existed
Shift position switch harness connector Condition Status
Te r m i n a l
+ (fuse) −
110 Apply 12 V direct current between
terminals 1 and 10.
“M” mode indicato
r lamp turns on.
2
12Apply 12 V direct current between
terminals 2 and 12.
“P” position indicator lamp turns on.
3 Apply 12 V direct current between
terminals 3 and 12. “R” position indica
tor lamp turns on.
4 Apply 12 V direct current between
terminals 4 and 12.
“D” position indica
tor lamp turns on.
5 Apply 12 V direct current between
terminals 5 and 12. “N” position indica
tor lamp turns on.
98 Apply 12 V direct current between
terminals 9 and 8. Illumination lamp turns on.
Revision: 2010 May2011 QX56

WW-1
DRIVER CONTROLS
C
DE
F
G H
I
J
K
M
SECTION WW
A
B
WW
N
O P
CONTENTS
WIPER & WASHER
PRECAUTION ................ ...............................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .....................................
3
Precaution for Procedure without Cowl Top Cover ......4
SYSTEM DESCRIPTION ..............................5
COMPONENT PARTS ................................... .....5
Component Parts Location .................................. ......5
Component Description ............................................6
Washer Switch ..........................................................6
SYSTEM ..............................................................7
FRONT WIPER AND WASHER SYSTEM ............. ......7
FRONT WIPER AND WASHER SYSTEM : Sys-
tem Diagram ..............................................................
7
FRONT WIPER AND WASHER SYSTEM : Sys-
tem Description .........................................................
7
FRONT WIPER AND WASHER SYSTEM : Fail-
safe ...........................................................................
9
REAR WIPER AND WASHER SYSTEM ............... ....10
REAR WIPER AND WASHER SYSTEM : System
Diagram ...................................................................
10
REAR WIPER AND WASHER SYSTEM : System
Description ..............................................................
10
REAR WIPER AND WASHER SYSTEM :
Fail Safe .................................................................
12
HEADLAMP WASHER SYSTEM .......................... ....12
HEADLAMP WASHER SYSTEM : System Dia-
gram ........................................................................
13
HEADLAMP WASHER SYSTEM : System De-
scription ...................................................................
13
DIAGNOSIS SYSTEM (BCM) ............................14
COMMON ITEM ..................................................... ....14
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .....................................................
14
WIPER .................................................................... ....15
WIPER : CONSULT-III Function (BCM - WIPER) ....15
DIAGNOSIS SYSTEM (IPDM E/R) ...................18
Diagnosis Description ..............................................18
CONSULT-III Function (IPDM E/R) .........................20
ECU DIAGNOSIS INFORMATION ..............23
BCM, IPDM E/R .................................................23
List of ECU Reference ......................................... ....23
WIRING DIAGRAM ......................................24
WIPER AND WASHER SYSTEM .....................24
Wiring Diagram .................................................... ....24
BASIC INSPECTION ...................................33
DIAGNOSIS AND REPAIR WORKFLOW ........33
Work Flow ............................................................ ....33
DTC/CIRCUIT DIAGNOSIS .........................35
WIPER AND WASHER FUSE ...........................35
Diagnosis Procedure ........................................... ....35
FRONT WIPER MOTOR LO CIRCUIT ..............36
Component Function Check ....................................36
Diagnosis Procedure ...............................................36
FRONT WIPER MOTOR HI CIRCUIT ...............37
Component Function Check ....................................37
Diagnosis Procedure ...............................................37
FRONT WIPER AUTO STOP SIGNAL CIR-
CUIT ..................................................................
38
Component Function Check ....................................38
Diagnosis Procedure ...............................................38
Revision: 2010 May2011 QX56