2011 INFINITI QX56 fuse diagram

PG-142
< WIRING DIAGRAM >
FUSE, FUSIBLE LINK AND RELAY BOX
JCMWM8470GB
Revision: 2010 May2011 QX56

PG
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PG-143
< WIRING DIAGRAM >
C
D E
F
G H
I
J
K L
B A
O P
N
IPDM E/R (INTELLIGENT POWER
DISTRIBUTION MODULE ENGINE
ROOM)
Fuse, Connector and Terminal ArrangementINFOID:0000000006275755
JCMWM7722GB
Revision: 2010 May2011 QX56

HEATED STEERING WHEEL SYSTEMST-17
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
H I
J
K L
M A
B
ST
N
O P
5. Check continuity between heated steering w heel relay harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK HEATED STEERING WHEEL RELAY
Check heated steering wheel relay. Refer to ST-19, "
Component Inspection (Heated Steering Wheel Relay)".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace heated steering wheel relay. Refer to ST-7, "
Component Parts Location (Heated Steering
Wheel)".
6.DETECT MALFUNCTIONING ITEM
Check the following.
Battery
 Harness for short or open between bat tery and IPDM E/R. Refer to PG-11, "
Wiring Diagram - BATTERY
POWER SUPPLY -".
 10A fuse (No.76, located in the IPDM E/R). Refer to PG-143, "
Fuse, Connector and Terminal Arrangement".
 IPDM E/R
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace damaged parts.
7.CHECK GROUND CIRCUIT
Check continuity between heated steering wheel switch harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace damaged parts.
8.CHECK HARNESS BETWEEN HEATED STEERING WHEEL RELAY AND HEATED STEERING WHEEL
SWITCH 1. Check continuity between heated steering wheel relay harness connector terminal and heated steering
wheel switch harness connector terminal.
2. Check continuity between heated steering w heel relay harness connector terminal and ground.
Heated steering wheel relay Heated steering wheel
Continuity
Connector Terminal Connector Terminal
E90 5 M303 1 Existed
Heated steering wheel relay GroundContinuity
Connector Terminal
E90 5 Not existed
Heated steering wheel switch GroundContinuity
Connector Terminal
M52 6 Existed
Heated steering wheel relay Heated steering wheel switch Continuity
Connector Terminal Connector Terminal
E90 2 M52 2 Existed
Heated steering wheel relay GroundContinuity
Connector Terminal
E90 2 Not existed
Revision: 2010 May2011 QX56

ST-18
< DTC/CIRCUIT DIAGNOSIS >
HEATED STEERING WHEEL SYSTEM
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace damaged parts.
9.CHECK HARNESS BETWEEN FUSE BLOCK (J/B) AND HEATED STEERING WHEEL SWITCH
1. Check continuity between fuse block (J/B) connec tor terminal and heated steering wheel switch harness
connector terminal.
2. Check continuity between fuse block (J/B) harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 10.
NO >> Repair or replace damaged parts.
10.DETECT MALFUNCTIONING ITEM
Check the following.
 Ignition switch
 Harness for short or open between ignition switch and fuse block (J/B). Refer to PG-11, "
Wiring Diagram -
BATTERY POWER SUPPLY -".
 10A fuse [No.3, located in the fuse block (J/B)]. Refer to PG-143, "
Fuse, Connector and Terminal Arrange-
ment".
 Fuse block (J/B)
Is the inspection result normal?
YES >> Replace heated steering wheel switch. Refer to ST-56, "Removal and Installation".
NO >> Repair or replace damaged parts.
Component Inspection (Heated Steering Wheel)INFOID:0000000006225587
1.CHECK HEATED STEERING WHEEL CONTINUITY
Check continuty between heated steering wheel connector terminals.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace heated steering wheel. Refer to ST-33, "
Removal and Installation".
2.CHECK HEATED STEERING WHEEL RESISTANCE
Check resistance between heated steering wheel connector terminals.
Fuse block (J/B) Heated steering wheel switch Continuity
Connector Terminal Connector Terminal
M1 2A M52 1 Existed
Fuse block (J/B) GroundContinuity
Connector Terminal
M1 2A Not existed
heated steering wheel Condition Continuity
Terminal
1 − 2 Leather surface temperature of
20
°C (68 °F) or less Existed
Leather surface temperature of
30 °C (86 °) or more Not existed
heated steering wheel
Condition Resistance (Apprx.)
Terminal
1 − 2 Leather surface temperature of
20
°C (68 °F) 1.83
Ω
Revision: 2010 May2011 QX56

ST-22
< DTC/CIRCUIT DIAGNOSIS >
HEATED STEERING WHEEL SWITCH INDICATOR LAMP
7.DETECT MALFUNCTIONING ITEM
Check the following.
 Ignition switch
 Harness for short or open between ignition switch and fuse block (J/B). Refer to PG-11, "
Wiring Diagram -
BATTERY POWER SUPPLY -".
 10A fuse [No.3, located in the fuse block (J/B)]. Refer to PG-143, "
Fuse, Connector and Terminal Arrange-
ment".
 Fuse block (J/B)
Is the inspection result normal?
YES >> Replace heated steering wheel switch. Refer to ST-56, "Removal and Installation".
NO >> Repair or replace damaged parts.
Component Inspection (H eated Steering Wheel Relay)INFOID:0000000006225591
1.CHECK HEATED STEERING WHEEL RELAY CONTINUITY
Check continuity between heated steering wheel relay terminals.
CAUTION:
Connect the fuse between the termi nals when applying the voltage.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace heated steering wheel relay. Refer to ST-7, "
Component Parts Location (Heated Steering
Wheel)".
Heated steering wheel relay
Condition Continuity
Terminal
3 − 5 Apply 12 V direct current be-
tween terminals 1 and 2.
Existed
Other conditions. Not existed
Revision: 2010 May2011 QX56

ST-24
< SYMPTOM DIAGNOSIS >
HEATED STEERING WHEEL SYSTEM DOES NOT ACTIVATE
5. Check continuity between heated steering wheel relay harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK HEATED STEERING WHEEL RELAY
Check heated steering wheel relay. Refer to ST-19, "
Component Inspection (Heated Steering Wheel Relay)".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace heated steering wheel relay. Refer to ST-7, "
Component Parts Location (Heated Steering
Wheel)".
6.DETECT MALFUNCTIONING ITEM
Check the following.
Battery
 Harness for short or open between bat tery and IPDM E/R. Refer to PG-11, "
Wiring Diagram - BATTERY
POWER SUPPLY -".
 10A fuse (No.76, located in the IPDM E/R). Refer to PG-143, "
Fuse, Connector and Terminal Arrangement".
 IPDM E/R
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace damaged parts.
7.CHECK GROUND CIRCUIT
Check continuity between heated steering wheel switch harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace damaged parts.
8.CHECK HARNESS BETWEEN HEATED STEERING WHEEL RELAY AND HEATED STEERING WHEEL
SWITCH
1. Check continuity between heated steering wheel relay harness connector terminal and heated steering
wheel switch harness connector terminal.
2. Check continuity between heated steering w heel relay harness connector terminal and ground.
Heated steering wheel relay Heated steering wheel
Continuity
Connector Terminal Connector Terminal
E90 5 M303 1 Existed
Heated steering wheel relay GroundContinuity
Connector Terminal
E90 5 Not existed
Heated steering wheel switch GroundContinuity
Connector Terminal
M52 6 Existed
Heated steering wheel relay Heated steering wheel switch Continuity
Connector Terminal Connector Terminal
E90 2 M52 2 Existed
Heated steering wheel relay GroundContinuity
Connector Terminal
E90 2 Not existed
Revision: 2010 May2011 QX56

HEATED STEERING WHEEL SYSTEM DOES NOT ACTIVATE
ST-25
< SYMPTOM DIAGNOSIS >
C
D E
F
H I
J
K L
M A
B
ST
N
O P
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace damaged parts.
9.CHECK HARNESS BETWEEN FUSE BLOCK (J/B) AND HEATED STEERING WHEEL SWITCH
1. Check continuity between fuse block (J/B) connec tor terminal and heated steering wheel switch harness
connector terminal.
2. Check continuity between fuse block (J/B) harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 10.
NO >> Repair or replace damaged parts.
10.DETECT MALFUNCTIONING ITEM
Check the following.
 Ignition switch
 Harness for short or open between ignition s witch and fuse block (J/B). Refer to PG-11, "
Wiring Diagram -
BATTERY POWER SUPPLY -".
 10A fuse [No.3, located in the fuse block (J/B)]. Refer to PG-143, "
Fuse, Connector and Terminal Arrange-
ment".
 Fuse block (J/B)
Is the inspection result normal?
YES >> Replace heated steering wheel switch. Refer to ST-56, "Removal and Installation".
NO >> Repair or replace damaged parts.
Fuse block (J/B) Heated steering wheel switch Continuity
Connector Terminal Connector Terminal
M1 2A M52 1 Existed
Fuse block (J/B) GroundContinuity
Connector Terminal
M1 2A Not existed
Revision: 2010 May2011 QX56

HEATED STEERING WHEEL SWITCH INDICATOR LAMP DOES NOT TURN ON
ST-27
< SYMPTOM DIAGNOSIS >
C
D E
F
H I
J
K L
M A
B
ST
N
O P
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK HEATED STEERING WHEEL RELAY
Check heated steering wheel relay. Refer to ST-22, "
Component Inspection (Heated Steering Wheel Relay)".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace heated steering wheel relay. Refer to ST-7, "
Component Parts Location (Heated Steering
Wheel)".
5.CHECK HARNESS BETWEEN HEATED STEERING WHEEL RELAY AND HEATED STEERING WHEEL
SWITCH
1. Check continuity between heated steering wheel relay harness connector terminal and heated steering
wheel switch harness connector terminal.
2. Check continuity between heated steering w heel relay harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace damaged parts.
6.CHECK HARNESS BETWEEN FUSE BLOCK (J/B) AND HEATED STEERING WHEEL SWITCH
1. Check continuity between fuse block (J/B) connec tor terminal and heated steering wheel switch harness
connector terminal.
2. Check continuity between fuse block (J/B) harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace damaged parts.
7.DETECT MALFUNCTIONING ITEM
Check the following.
 Ignition switch
 Harness for short or open between ignition s witch and fuse block (J/B). Refer to PG-11, "
Wiring Diagram -
BATTERY POWER SUPPLY -".
 10A fuse [No.3, located in the fuse block (J/B)]. Refer to PG-143, "
Fuse, Connector and Terminal Arrange-
ment".
 Fuse block (J/B)
Is the inspection result normal?
YES >> Replace heated steering wheel switch. Refer to ST-56, "Removal and Installation".
Heated steering wheel relay Heated steering wheel switch
Continuity
Connector Terminal Connector Terminal
E90 2 M52 2 Existed
Heated steering wheel relay GroundContinuity
Connector Terminal
E90 2 Not existed
Fuse block (J/B) Heated steering wheel switch Continuity
Connector Terminal Connector Terminal
M1 2A M52 1 Existed
Fuse block (J/B) GroundContinuity
Connector Terminal
M1 2A Not existed
Revision: 2010 May2011 QX56