INFINITI QX56 2008 Factory Service Manual

MWI-36
< COMPONENT DIAGNOSIS >
PARKING BRAKE SWITCH SIGNAL CIRCUIT
PARKING BRAKE SWITCH SIGNAL CIRCUIT
DescriptionINFOID:0000000001691301
Transmits the parking brake switch signal to the combination meter.
Component Function CheckINFOID:0000000001691302
1.COMBINATION METER INPUT SIGNAL
1. Start engine.
2. Monitor “BRAKE” warning lamp while applying and releasing the parking brake.
>> Inspection End.
Diagnosis ProcedureINFOID:0000000001691303
1.CHECK PARKING BRAKE SWITCH CIRCUIT
1. Disconnect combination meter connector and parking brake switch connector.
2. Check continuity between combination meter harness connector M24 (A) terminal 31 and parking brake switch harness connec-
tor M11 (B) terminal 1.
3. Check continuity between combination meter harness connector M24 (A) terminal 31 and ground.
Is the inspection result normal?
YES >> Inspection End.
NO >> Repair harness or connector.
Component InspectionINFOID:0000000001691304
1.CHECK PARKING BRAKE SWITCH
Check continuity between parking brake switch terminal 1 and switch
case ground.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace parking brake switch. BRAKE warning lamp
Parking brake applied : ON
Parking brake released : OFF
31 - 1
: Continuity should exist.
31 - Ground : Continuity should not exist.
AWNIA0208ZZ
Component Terminal Condition Continuity
Parking brake switch 1 Parking brake applied
Yes
Parking brake released No
AWNIA0018ZZ
Revision: March 2010 2008 QX56

MWI
WASHER LEVEL SWITCH SIGNAL CIRCUITMWI-37
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
WASHER LEVEL SWITCH SIGNAL CIRCUIT
DescriptionINFOID:0000000001691305
Transmits the washer level switch signal to the combination meter.
Diagnosis ProcedureINFOID:0000000001691306
1.CHECK WASHER FLUID LEVEL SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and washer fluid level switch connector.
3. Check continuity between combination meter harness connector M24 (A) terminal 23 and washer fl uid level switch harness con-
nector E106 (B) terminal 1.
4. Check continuity between combination meter harness connector M24 (A) terminal 23 and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair harness or connector.
2.CHECK WASHER FLUID LE VEL SWITCH GROUND CIRCUIT
Check continuity between washer fluid level switch harness connec-
tor E106 terminal 2 and ground.
Is the inspection result normal?
YES >> Inspection End.
NO >> Repair harness or connector.
Component InspectionINFOID:0000000001691307
1.CHECK WASHER FLUID LEVEL SWITCH
Check continuity between washer fluid level switch terminals 1 and
2.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace washer fluid level switch. 23 - 1
: Continuity should exist.
23 - Ground : Continuity should not exist.
AWNIA0209ZZ
2 - Ground: Continuity should exist.
AWNIA0112ZZ
TerminalWasher fluid level Continuity
1 - 2 Low
Yes
Other No
AWNIA0113ZZ
Revision: March 2010 2008 QX56

MWI-38
< COMPONENT DIAGNOSIS >
COMPASS
COMPASS
Wiring DiagramINFOID:0000000001691308
ALNWA0133GB
Revision: March 20102008 QX56

MWI
COMPASSMWI-39
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
ALNIA0687GB
Revision: March 2010 2008 QX56

MWI-40
< COMPONENT DIAGNOSIS >
CLOCK
CLOCK
Wiring DiagramINFOID:0000000001696401
ALNWA0134GB
Revision: March 20102008 QX56

MWI
CLOCKMWI-41
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
ALNIA0688GB
Revision: March 2010 2008 QX56

MWI-42
< ECU DIAGNOSIS >
COMBINATION METER
ECU DIAGNOSIS
COMBINATION METER
Reference ValueINFOID:0000000001691309
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
33 R/G Stop lamp switch —Brake pedal depressed
Battery voltage
Brake pedal released 0
Revision: March 2010 2008 QX56

MWI
COMBINATION METERMWI-43
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
35 G/O Security indicator input OFF Security indicator ON 0
Security indicator OFF
Battery voltage
37 O Ignition switch ACC or
ON
—
— Battery voltage
40 Y/R 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: March 2010
2008 QX56

MWI-44
< ECU DIAGNOSIS >
COMBINATION METER
Wiring Diagram
INFOID:0000000001691310
ABNWA0807GB
Revision: March 2010 2008 QX56

MWI
COMBINATION METERMWI-45
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
ALNWA0129GB
Revision: March 2010 2008 QX56