INFINITI QX56 2010 Factory Service Manual

WCS-22
< COMPONENT DIAGNOSIS >
KEY SWITCH SIGNAL CIRCUIT
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair harness or connector.
4.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch and ignition knob switch harness
connector and ground.
Is the inspection result normal?
YES >> Replace key switch and ignition knob switch.
NO >> Repair harness or connector.
Component InspectionINFOID:0000000005146165
1.CHECK KEY SWITCH
1. Turn ignition switch OFF.
2. Disconnect key switch and ignition knob switch connector.
3. Check continuity between key switch and ignition knob switch terminals 3 and 4.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace key switch and ignition knob switch.
A GroundContinuity
Connector Terminal
M18 37 No
Te r m i n a l s
Voltag e
(Approx.)
(+)
(−)
Key switch and ignition
knob switch connector Terminal
M12 3Ground Battery voltage
AWNIA0160ZZ
3 – 4
When key is inserted
into key cylinder : Continuity should exist.
When key is removed
from key cylinder : Continuity should not exist.
AWNIA0158ZZ
Revision: April 20092010 QX56

WCS
WARNING CHIME SYSTEMWCS-23
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
WARNING CHIME SYSTEM
Wiring DiagramINFOID:0000000005146166
ABNWA0418GB
Revision: April 20092010 QX56

WCS-24
< COMPONENT DIAGNOSIS >
WARNING CHIME SYSTEM
ABNIA1365GB
Revision: April 20092010 QX56

WCS
WARNING CHIME SYSTEMWCS-25
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
ABNIA1314GB
Revision: April 20092010 QX56

WCS-26
< COMPONENT DIAGNOSIS >
WARNING CHIME SYSTEM
ABNIA1321GB
Revision: April 20092010 QX56

WCS
WARNING CHIME SYSTEMWCS-27
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
ABNIA1315GB
Revision: April 20092010 QX56

WCS-28
< ECU DIAGNOSIS >
COMBINATION METER
ECU DIAGNOSIS
COMBINATION METER
Reference ValueINFOID:0000000005382408
TERMINAL LAYOUT
PHYSICAL VALUES
WKIA5724E
Te r m i -nal Wire
color Item Condition
Reference value (V)
(Approx.)
Ignition
switch Operation or condition
3 Y/L Fuel level sensor signal — —Refer to MWI-12, "
FUEL GAUGE : System
Description".
4 B/P Fuel level sensor ground ON —0
6 BR/W Generator ONGenerator voltage low
0
Generator voltage normal Battery voltage
10 L CAN-H —— —
11 P C A N - L —— —
13 P Air bag warning lamp in-
put ONAir bag warning lamp ON
4
Air bag warning lamp OFF 0
15 BR CK SUSP warning lamp
input —CK SUSP warning lamp
ON
0
CK SUSP warning lamp
OFF Battery voltage
20 B Ground —— 0
21 O/L Ignition switch ON or
START ON
— Battery voltage
23 W/L Washer fluid level switch ON Washer fluid level low
0
Washer fluid level normal Battery voltage
24 O/B Seat belt buckle switch
LH ONUnfastened (ON)
0
Fastened (OFF) Battery voltage
25 P/L Seat belt buckle switch
RH ONUnfastened (ON)
0
Fastened (OFF) Battery voltage
31 G Parking brake switch ON Parking brake applied
0
Parking brake released Battery voltage
32 P/B Brake fluid level switch ON Brake fluid level low
0
Brake fluid level normal Battery voltage
35 G/O Security indicator input OFF Security indicator ON
0
Security indicator OFF Battery voltage
Revision: April 20092010 QX56

WCS
COMBINATION METERWCS-29
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
37 O Ignition switch ACC or
ON
—
— Battery voltage
40 P Battery power supply — —Battery voltage
46 BR Illumination output ——Refer to INL-9, "
System Description".
47 B Ground —— 0
50 W/R Vehicle speed signal out-
put (8-pulse) ONSpeedometer operated
[When vehicle speed is ap-
prox. 40 km/h (25 MPH)] NOTE:
Maximum voltage may be 12V due to spec-
ifications (connected units).
52 B Ground —— 0
Te r m i -
nal Wire
color Item Condition
Reference value (V)
(Approx.)
Ignition
switch Operation or condition
PKIC0643E
Revision: April 20092010 QX56

WCS-30
< ECU DIAGNOSIS >
COMBINATION METER
Wiring Diagram
INFOID:0000000005382409
ABNWA0408GB
Revision: April 20092010 QX56

WCS
COMBINATION METERWCS-31
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
ABNWA0409GB
Revision: April 20092010 QX56