air condition INFINITI QX56 2004 Factory Service Manual

POWER DOOR LOCK SYSTEM
BL-41
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D
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MA
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Revision: August 20072004 QX56
Glass Hatch Lock Actuator CheckEIS005X6
1. CHECK GLASS HATCH LOCK ACTUATOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect glass hatch lock actuator.
3. Check continuity between glass hatch lock actuator connector
D711 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness. Refer to BL-136, "
BACK
DOOR LOCK" .
2. CHECK GLASS HATCH LOCK ACTUATOR HARNESS
1. Disconnect BCM.
2. Check continuity between BCM connector M19 terminal 53 and
glass hatch lock actuator connector D711 terminal 3.
3. Check continuity between BCM connector M19 terminals 53 and
ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK GLASS HATCH LOCK ACTUATOR SIGNAL
1. Reconnect BCM.
2. Check voltage between BCM connector M19 terminal 53 and
ground.
OK or NG
OK >> Replace glass hatch lock actuator.
NG >> Replace BCM. Refer to BCS-19, "
Removal and Installa-
tion of BCM" .
Terminal (Wire color) Continuity
1 (B) Ground Yes
LIIA1940E
Terminals (wire color) Continuity
53 (L/W) 3 (L/W) Yes
Terminals (Wire color) Continuity
53 (L/W) Ground No
LIIA1939E
ConnectorTe r m i n a l s
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M19 53 (L/W) GroundGlass hatch switch is
depressed0 → Battery voltage
for 300 ms
LIIA1938E

BL-42
POWER DOOR LOCK SYSTEM
Revision: August 20072004 QX56
Front Door Lock Assembly LH (Key Cylinder Switch) CheckEIS002RN
1. CHECK DOOR KEY CYLINDER SWITCH LH
With CONSULT-II
Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in
DATA MONITOR mode with CONSULT–II. Refer to BL-27, "
DATA MONITOR" .

When key inserted in front key cylinder is turned to LOCK:

When key inserted in front key cylinder is turned to UNLOCK:
Without CONSULT-II
Check voltage between main power window and door lock/unlock
switch connector D7 terminals 4, 6 and ground.
OK or NG
OK >> Front door lock assembly LH (key cylinder switch) signal is OK.
NG >> GO TO 2.
2. CHECK DOOR KEY CYLINDER SWITCH LH GROUND HARNESS
Check continuity between front door lock assembly LH (key cylinder
switch) connector (A) D14 terminal 5 and body ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.KEY CYL LK-SW : ON
KEY CYL UN-SW : ON
LIIA0188E
ConnectorTe r m i n a l s
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
D74 (L)
GroundNeutral/Unlock 5
Lock 0
6 (R)Neutral/Lock 5
Unlock 0
LIIA0566E
Connector Terminal (wire color) Continuity
D14 5 (B) – Ground Yes
WIIA0755E

POWER DOOR LOCK SYSTEM
BL-43
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
3. CHECK DOOR KEY CYLINDER SWITCH LH
Check continuity between front door lock assembly LH (key cylinder
switch) terminals.
OK or NG
OK >> GO TO 4.
NG >> Replace front door lock assembly LH (key cylinder switch). Refer to BL-132, "
Removal and Instal-
lation" .
4. CHECK DOOR KEY CYLINDER HARNESS
Check continuity between main power window and door lock/unlock
switch connector (A) D7 terminals 4, 6 and front door lock assembly
LH (key cylinder switch) connector (B) D14 terminals 1, 6 and body
ground.
OK or NG
OK >> Replace main power window and door lock/unlock switch.
NG >> Repair or replace harness.
Terminals Condition Continuity
1 – 5 Key is turned to UNLOCK or neutral. No
Key is turned to LOCK. Yes
5 – 6Key is turned to LOCK or neutral. No
Key is turned to UNLOCK. Yes
LIIA1573E
ConnectorTe r m i n a l s
(wire color)ConnectorTe r m i n a l s
(wire color)Continuity
A: Main
power win-
dow and
door lock/
unlock
switch4 (L) B: Front
door lock
assembly
LH (key
cylinder
switch)1 (L) Yes
6 (R) 6 R) Yes
4 (L),
6 (R)Ground No
WIIA0756E

BL-62
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56
Key Switch (Insert) CheckEIS002S1
1. CHECK KEY SWITCH INPUT SIGNAL
With CONSULT-II
Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT–II. Refer to BL-27, "
DATA MONI-
TOR" .

When key is inserted to ignition key cylinder:

When key is removed from ignition key cylinder:
Without CONSULT-II
Check voltage between BCM connector M18 terminal 37 and
ground.
OK or NG
OK >> Key switch (insert) circuit is OK.
NG >> GO TO 2.
2. CHECK KEY SWITCH (INSERT)
1. Turn ignition switch OFF.
2. Disconnect key switch and key lock solenoid.
3. Check continuity between key switch terminals 3, 4.
OK or NG
OK >> Repair or replace harness.
NG >> Replace key switch.KEY ON SW : ON
KEY ON SW : OFF
LIIA0169E
ConnectorTerminal
(Wire color)
Condition Voltage (V)
( + ) ( – )
M18 37 (B/R) GroundKey is inserted. Battery voltage
Key is removed. 0
LIIA0567E
Terminals Condition Continuity
3 – 4Key is inserted. Yes
Key is removed. No
LIIA1044E

VEHICLE SECURITY (THEFT WARNING) SYSTEM
BL-95
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Revision: August 20072004 QX56
4. CHECK BACK DOOR SWITCH GROUND
Check continuity between back door latch connector terminal 8 and
ground.
OK or NG
OK >> Back door switch circuit is OK.
NG >> Repair or replace harness.
Hood Switch CheckEIS0039U
1. CHECK HOOD SWITCH
Check hood switch and hood fitting condition.
OK or NG
OK >> GO TO 2.
NG >> Adjust installation of hood switch.
2. CHECK HOOD SWITCH INPUT SIGNAL
With CONSULT-II
Check "HOOD SW" in "DATA MONITOR" mode with CONSULT-II.
Without CONSULT-II
Check voltage between IPDM E/R harness connector E122 terminal
41 and ground.
OK or NG
OK >> Hood switch circuit is OK.
NG >> GO TO 3.8 (B) - Ground : Continuity should exist.
LIIA0828E
When hood is open : HOOD SW ON
When hood is closed : HOOD SW OFF
LIIA0038E
ConnectorTerminal (Wire color)
Condition of
hoodVoltage (V)
(Approx.)
(+) (-)
E122 41 (Y/B) GroundOpen 0
Closed Battery voltage
WIIA0601E

BL-96
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
3. CHECK HOOD SWITCH
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector E122 and hood switch connector.
3. Check continuity between IPDM E/R connector (A) E122 termi-
nal 41 and hood switch connector (B) E8 terminal 2.
4. Check continuity between IPDM E/R connector (A) E122 termi-
nal 41 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK HOOD SWITCH
Check continuity between hood switch connector E8 terminals 1 and 2.
OK or NG
OK >> Repair or replace harness between hood switch and
grounds E9, E15 and E24.
NG >> Replace hood switch.41 (Y/B) - 2 (Y/B) : Continuity should exist.
41 (Y/B) - ground : Continuity should not exist.
WIIA0761E
Terminals Condition of hood switch Continuity
1- 2Pressed No
Released Yes
LIIA1932E

BL-98
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
3. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and combination meter (security indicator lamp).
3. Check continuity between BCM connector (A) M18 terminal 23
and combination meter (security indicator lamp) harness con-
nector (B) M24 terminal 28.
4. Check continuity between BCM connector (A) M18 terminal 23
and ground.
OK or NG
OK >> Check the following:

10A fuse [No. 19, located in fuse block (J/B)]

Harness for open or short between combination meter (security indicator lamp) and fuse
NG >> Repair or replace harness.
Front Door Lock Assembly LH (Key Cylinder Switch) CheckEIS002SQ
1. CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH)
With CONSULT-II
Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in
DATA MONITOR mode in CONSULT–II.Refer to BL-27, "
DATA MONITOR" .

When key inserted in front key cylinder is turned to LOCK:

When key inserted in front key cylinder is turned to UNLOCK:
Without CONSULT-II
Check voltage between main power window and door lock/unlock switch connector D7 terminals 4, 6 and
ground.
OK or NG
OK >> Front door lock assembly LH (key cylinder switch) signal is OK.
NG >> GO TO 2.23 (G/O) - 28 (G/O) : Continuity should exist.
23 (G/O) - ground : Continuity should not exist.
LIIA2253E
KEY CYL LK-SW : ON
KEY CYL UN-SW : ON
LIIA0188E
Connec-
torTerminals (Wire
color)Condition of key cylinder
switchVoltage (V)
(Approx.)
( + ) ( – )
D74 (L)
GroundNeutral/Unlock 5
Lock 0
6 (R)Neutral/Lock 5
Unlock 0
LIIA0566E

VEHICLE SECURITY (THEFT WARNING) SYSTEM
BL-99
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
2. CHECK DOOR KEY CYLINDER SWITCH LH GROUND HARNESS
Check continuity between front door lock assembly LH (key cylinder
switch) connector (A) D14 terminal 5 and body ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK DOOR KEY CYLINDER SWITCH LH
Check continuity between front door lock assembly LH (key cylinder
switch) terminals.
OK or NG
OK >> GO TO 4.
NG >> Replace front door lock assembly LH (key cylinder switch). Refer to BL-132, "
Removal and Instal-
lation" .
4. CHECK DOOR KEY CYLINDER HARNESS
Check continuity between main power window and door lock/unlock
switch connector (A) D7 terminals 4, 6 and front door lock assembly
LH (key cylinder switch) connector (B) D14 terminals 1, 6 and body
ground.
OK or NG
OK >> Replace main power window and door lock/unlock switch.
NG >> Repair or replace harness.
Connector Terminal (wire color) Continuity
D14 5 (B) – Ground Yes
WIIA0755E
Terminals Condition Continuity
1 – 5 Key is turned to UNLOCK or neutral. No
Key is turned to LOCK. Yes
5 – 6Key is turned to LOCK or neutral. No
Key is turned to UNLOCK. Yes
LIIA1573E
ConnectorTe r m i n a l s
(wire color)ConnectorTe r m i n a l s
(wire color)Continuity
A: Main
power win-
dow and
door lock/
unlock
switch4 (L) B: Front
door lock
assembly
LH (key
cylinder
switch)1 (L) Yes
6 (R) 6 R) Yes
4 (L),
6 (R)Ground No
WIIA0756E

BL-118
AUTOMATIC BACK DOOR SYSTEM
Revision: August 20072004 QX56
Power Liftgate Switch System InspectionEIS002T3
1. POWER LIFTGATE SWITCH FUNCTION INSPECTION
Check power liftgate switch using switch operation.
OK or NG
OK >> Power liftgate switch is OK.
NG >> GO TO 2.
2. POWER LIFTGATE SWITCH POWER SUPPLY CIRCUIT INSPECTION
1. Turn ignition switch OFF.
2. While operating the power liftgate switch, check voltage
between back door control unit connector B55 terminal 23 and
ground.
OK or NG
OK >> Switch is OK.
NG >> GO TO 3.
3. POWER LIFTGATE SWITCH CIRCUIT INSPECTION
1. Disconnect power liftgate switch and back door control unit connector.
2. Check continuity between back door control unit connector (A)
B55 terminal 23 and power liftgate switch connector (B) M92 ter-
minal 1.
3. Check continuity between power liftgate switch connector (B)
M92 terminal 1 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness.
4. POWER LIFTGATE SWITCH GROUND INSPECTION
Check continuity between power liftgate switch connector terminal 2
and ground.
OK or NG
OK >> Replace the power liftgate switch.
NG >> Repair or replace harness.
Connector terminal
(Wire color)
ConditionVoltage (V)
(Approx.)
( + ) ( - )
23 (L/W) GroundPower liftgate
switchON 0
OFF 5
LIIA0802E
1 (L/W) - 23 (L/W) : Continuity should exist.
1 (L/W) - ground : Continuity should not exist.
LIIA2254E
2 (B) - Ground : Continuity should exist.
LIIA1065E

AUTOMATIC BACK DOOR SYSTEM
BL-119
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
GLASS HATCH AJAR SWITCH CHECK
1. CHECK GLASS HATCH AJAR SWITCH INPUT SIGNAL
With CONSULT-II
Check glass hatch ajar switch ("TRNK OPN MNTR") in DATA MONITOR mode with CONSULT–II. Refer to
BL-27, "
DATA MONITOR" .

When glass hatch is open:

When glass hatch is closed:
Without CONSULT-II
Check voltage between BCM connector M19 terminal 42 and ground.
OK or NG
OK >> System is OK.
NG >> GO TO 2.
2. CHECK GLASS HATCH AJAR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect glass hatch ajar switch, BCM and back door control unit.
3. Check continuity between glass hatch ajar switch connector D707 terminal + and BCM connector M19 ter-
minal 42.
4. Check continuity between glass hatch ajar switch connector
D707 terminal + and back door control unit connector B55 termi-
nal 17.
5. Check continuity between glass hatch ajar switch connector
D707 terminal + and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.TRNK OPN MNTR : ON
TRNK OPN MNTR : OFF
WIIA0108E
Connec-
torItemTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
( + ) ( – )
M19 BCM 42 (GR) GroundOpen
↓
Closed0
↓
5
LIIA1149E
+ (GR) - 42 (GR) : Continuity should exist
+ (GR) - 17 (GR) : Continuity should exist
+ (GR) - Ground : Continuity should not exist
LIIA1547E