INFINITI QX4 2005 Factory Service Manual

BL-104
AUTOMATIC BACK DOOR SYSTEM
Revision: October 20052005 QX56
Warning Chime Active Conditions
The warning chime uses two types of audio warnings, a friendly chime and a warning chime. The friendly
chime consists of dings lasting 0.66 seconds each immediately followed by the next ding. The warning chime
consists of beeps lasting 0.33 seconds with a pause of 0.33 seconds between each beep.
Reverse Conditions
Operation status Operation or conditions Warning chime pattern
When auto operation startsPower liftgate switch operation
Friendly chime
2 seconds, 3 dings Remote keyless entry operation
Back door handle switch operation
Back door close switch operation
When reverse operation startsWhen reverse request is detected from
power liftgate switch, remote keyless
entry or back door close switchFriendly chime
1.3 seconds, 2 dings
When obstacle is detectedWarning chime
2 seconds, 3 beeps
Operating at low voltage While opening or closing Warning chime
2 seconds, 3 beeps
A/T selector lever not in P positionBack door close operationFriendly chime
Continuously dings
Back door open operationWarning chime
Continuously beeps
(until close operation is started)
Type Overload reverse
Operation covered Both directions
Detection methodOperation speed and motor current change direction
Pinch strips during back door close operation
Non-reversed area

For about 0.5 seconds immediately after drive motor operation
starts

Between full open and approx. 7° from full open

Closure operation area (half switch - close switch)
Number of times reverse allowedOne reversal is allowed (if a second obstacle is detected during a
power open or close operation, the door reverts to manual
mode).

AUTOMATIC BACK DOOR SYSTEM
BL-105
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Revision: October 20052005 QX56
SchematicEIS008R5
WIWA1741E

BL-106
AUTOMATIC BACK DOOR SYSTEM
Revision: October 20052005 QX56
Wiring Diagram — B/CLOS —EIS0 08 R6
WIWA1314E

AUTOMATIC BACK DOOR SYSTEM
BL-107
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Revision: October 20052005 QX56
WIWA0174E

BL-108
AUTOMATIC BACK DOOR SYSTEM
Revision: October 20052005 QX56
WIWA1315E

AUTOMATIC BACK DOOR SYSTEM
BL-109
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Revision: October 20052005 QX56
WIWA1316E

BL-110
AUTOMATIC BACK DOOR SYSTEM
Revision: October 20052005 QX56
WIWA1317E

AUTOMATIC BACK DOOR SYSTEM
BL-111
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Revision: October 20052005 QX56
Terminals and Reference Value for Back Door Control UnitEIS008R7
Te r m i n a l Wire
ColorItem ConditionVoltage (V)
(Approx.)
1 B Ground — —
2 B Ground — —
3 Y/R Battery power supply — Battery voltage
4 G Hazard lamp output Request to flash hazardsPulse must be >50ms
but less than 250ms
5 B/P Pinch strip ground — —
6 R Warning chime output Back door motor active Battery voltage
7 G/R Ignition switchIgnition switch ON Battery voltage
Ignition switch OFF 0
8 GR/B Back door close switchCLOSE position (ON) 0
NEUTRAL position (OFF) Battery voltage
9 L Warning chime ground — —
10 L/B Battery power supply — Battery voltage
11 YCinch latch motor
CLOSE outputBack door close operation Battery voltage
12 LClosure motor
RETURN outputBack door release operation Battery voltage
13 P/LBack door close switch
(While operating back door)CANCEL position (ON) 0
NEUTRAL position (OFF) 9
14 P Close switch signal While fully opening back door
15 O/L Open switch signal While fully closing back door
17 GR Glass hatch ajar signalGlass hatch OPEN 0
Glass hatch CLOSED 5
18 GR/R Park switchP or N position (Ignition is ON) 0
Other (Ignition is ON) 9
19 BR/B Pinch strip RHDetecting obstruction 0
Other 4
20 V/G Pinch strip LHDetecting obstruction 0
Other 4
PIIA3278E
W IIA1047E
PIIA2171E

BL-112
AUTOMATIC BACK DOOR SYSTEM
Revision: October 20052005 QX56
Terminals and Reference Value for BCMEIS0 08 R8
21 W/V Power window serial link —
22 BR Half switch signal Back door half latch position0
23 L/W Power liftgate switchON 0
OFF Battery voltage
26 VBack door outside handle sig-
nalBack door handle switch (at rest) Battery voltage
Back door handle switch (open) 0 Terminal Wire
ColorItem ConditionVoltage (V)
(Approx.)
PIIA2344E
PIIA2169E
Terminal Wire
ColorItem ConditionVoltage (V)
(Approx.)
10 G Hazard lamp flash inputBack door active 0
Other 5
22 W/V Bus —
42 GR Glass hatch ajar switch Open 0
Closed 5
43 R/BBack door latch (door ajar
switch)Open 0
Closed 5
67 B Ground — 0
70 W/B Battery power supply — Battery voltage
PIIA2344E

AUTOMATIC BACK DOOR SYSTEM
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Revision: October 20052005 QX56
Trouble Diagnosis ProcedureEIS008R9
1. Check the trouble symptom and customer's requests.
2. Understand outline of system. Refer to BL-45, "
System Description" .
3. Confirm system operation.
4. Perform self-diagnosis procedures. Refer to BL-113, "
Self-Diagnosis Procedures" .
5. Refer to diagnosis chart by symptom, repair or replace any malfunctioning parts. Refer to BL-114, "
Diag-
nosis Chart" .
6. Inspection End.
Self-Diagnosis ProceduresEIS008RA
INPUT SIGNAL CHECK MODE
Input signal check mode allows testing of switch input signal to the back door control unit.
To activate input signal check mode on the automatic back door, perform the following steps:
1. Turn ignition switch OFF.
2. Turn back door close switch to CANCEL (system cancelled).
3. Place A/T selector lever in P position.
4. Using the inside emergency release lever, open the back door.
5. Have an assistant press and hold the back door handle switch.
6. While the assistant continues to hold the back door handle switch, turn ignition switch ON (DO NOT start
engine).
7. After approximately 5 seconds, the back door warning chime will sound for 0.5 seconds.
8. Release the back door handle switch.
9. Within 8 seconds of the back door warning chime sounding, press and hold the power liftgate switch.
10. After approximately 5 seconds, the back door warning chime will sound for 1 second.
11. Release the power liftgate switch.
12. The input signal check mode is now initialized.
The input signal check mode can test the following inputs. The back door warning chime will sound for approx-
imately 0.5 seconds each time a switch signal input occurs. Use this test when one of these inputs is not
responding during normal automatic back door operation.
*Back door warning chime should sound as soon as vehicle moves.
Turn ignition switch OFF to end input signal check mode.
OPERATING CHECK MODE
Operating check mode allows self-diagnosis of the automatic back door system.
To activate operating check mode on the automatic back door, perform the following steps:
1. Turn ignition switch OFF.
2. Turn back door close switch to CANCEL (system cancelled).
3. Place A/T selector lever in P position.
Switch signal Operation Refer to
Power liftgate switch OFF → ONBL-116
Back door close switch (CLOSE) OFF → ONBL-118
Back door close switch (CANCEL) OFF → ONBL-119
Back door handle switch OFF → ONBL-125
Glass switch OFF → ONBL-117
A/T device (park switch) P position → other than P positionAT-6 0
Vehicle speed* Vehicle speed —
Remote keyless entry signal Keyfob switch OFF → ONBL-44
Door lock/unlock signal LOCK → UNLOCKBL-16
Pinch strip LH signal OFF → ONBL-121
Pinch strip RH signal OFF → ONBL-121