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PARKING, LICENSE PLATE AND TAIL LAMPS LT-135
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to front side marker lamp LH terminal 2
through grounds E21, E50 and E51,
to parking lamp LH terminal 3
through grounds E21, E50 and E51,
to license plate lamp LH terminal 2
through grounds B15 and B45,
to rear combination lamp LH terminal 2
through grounds B15 and B45,
to front side marker lamp RH terminal 2
through grounds E21, E50 and E51,
to parking lamp RH terminal 3
through grounds E21, E50 and E51,
to license plate lamp RH terminal 2
through grounds B15 and B45,
to rear combination lamp RH terminal 2
through grounds B203 and B210,
to rear combination lamp control unit terminal 7
through grounds E21, E50 and E51.
With power and ground supplied, the parking, license plate, side marker and tail lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST (or 2ND) position, and the ignition switch is turned
from ON or ACC to OFF, the battery saver control feature is activated.
Under this condition, the parking, license, side marker and tail lamps remain illuminated for 5 minutes, then the
parking, license plate, side marker and tail lamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionNKS003H1
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitNKS003H2
Refer to LAN-32, "CAN Communication Unit" .
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LT-142
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2006 December 2006 FX35/FX45
Terminals and Reference Values for BCMNKS003H5
Terminals and Reference Values for IPDM E/RNKS003H6
Terminal No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
2R Combination
switch input 5 ON Lighting, turn,
wiper switch
(Wiper intermittent
dial position 4) OFF Approx. 0 V
Lighting switch 1ST Approx. 1.0 V
11 L G Ignition switch
(ACC) ACC — Battery voltage
33 G/Y Combination
switch output 4 ON Lighting, turn,
wiper switch
(Wiper intermittent
dial position 4) OFF
Approx. 7.2 V
Lighting switch 1ST
(The same result with
lighting switch 2ND)
Approx. 1.2 V
38 W/L Ignition switch
(ON) ON — Battery voltage
39 L CAN − H— — —
40 P CAN − L— — —
42 L/R Battery power
supply OFF — Battery voltage
49 B Ground ON — Approx. 0 V
52 B Ground ON — Approx. 0 V
55 G Battery power
supply OFF — Battery voltage
PKIB4959J
PKIB4960J
PKIB4958J
Terminal
No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
22 R Parking, license, side
marker, and tail lamp ON
Lighting switch
1ST position OFF Approx. 0 V
ON Battery voltage
38 B Ground ON — Approx. 0 V
48 L CAN − H— — —
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PARKING, LICENSE PLATE AND TAIL LAMPS LT-143
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49 R CAN − L— — —
60 B Ground ON — Approx. 0 V
Terminal
No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
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LT-144
PARKING, LICENSE PLATE AND TAIL LAMPS
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Terminals and Reference Value for Rear Combination Lamp Control UnitNKS003NA
Refer to LT- 9 9 , "Terminals and Reference Value for Rear Combination Lamp Control Unit" .
How to Proceed With Trouble DiagnosisNKS003H7
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 1 3 3 , "
System Description" .
3. Perform Preliminary Check. Refer to LT- 1 4 4 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Do parking, license plate, side marker and tail lamps operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckNKS003H8
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES
Check for blown fuses.
Refer to LT- 1 3 7 , "
Wiring Diagram — TAIL/L —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
Unit Power source Fuse and fusible link No.
BCM Battery
M
22
Ignition switch ON or START position 1 Ignition switch ACC or ON position 6
IPDM E/R Battery 71
Rear combination lamp control unit Battery 20
(+) (-) Ignition switch position
BCM con- nector Terminal OFF ACC ON
M3 11
Ground Approx. 0 V
Battery
voltage Battery
voltage
38 Approx. 0 V Approx. 0 V Battery
voltage
M4 42
Battery
voltage Battery
voltage Battery
voltage
55 Battery
voltage Battery
voltage Battery
voltage
PKIB5197E
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PARKING, LICENSE PLATE AND TAIL LAMPS LT-147
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4. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front side marker, parking lamp, license plate lamp and rear combination lamp connectors.
3. Select “IPDM E/R” on CONSULT-II, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Select “TAIL LAMP” on “SELECT TEST ITEM” screen.
5. Touch “ON” screen.
6. When parking, license plate and side marker is operating, check voltage between front side marker lamp, parking lamp, license plate lamp, rear combination lamp harness connector and ground.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front side marker, parking lamp, license plate lamp and rear combination lamp connectors.
3. Start auto active test. Refer to PG-21, "
Auto Active Test" .
4. When parking, license plate and side marker is operating, check voltage between front side marker lamp, parking lamp, license plate lamp, rear combination lamp harness connector and ground.
(+)
(-) Voltage
Front side marker
lamp connector Terminal
RH E22 1 Ground Battery voltage
LH E42
PKIA5236E
(+)
(-) Voltage
Parking lamp con-
nector Terminal
RH E23 2 Ground Battery voltage
LH E43
PKIC9695E
(+)
(-) Voltage
License plate lamp
connector Terminal
RH D111 1 Ground Battery voltage
LH D110
PKIA5238E
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5. CHECK PARKING, LICENSE PLATE AND SIDE MARKER LAMPS CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector and front side marker lamp harness connector.
4. Check continuity between IPDM E/R harness connector and parking lamp harness connector.
5. Check continuity between IPDM E/R harness connector and license plate lamp harness connector.
6. Check continuity between IPDM E/R harness connector and rear combination lamp harness connector.
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair harness or connector.
IPDM E/R Front side marker lamp Continuity
Connector Terminal Connector Terminal
E7 22 RH E22
1Yes
LH E42
PKIA5240E
IPDM E/R Parking lamp Continuity
Connector Terminal Connector Terminal
E7 22 RH E23
2Yes
LH E43
PKIC9696E
IPDM E/R License plate lamp Continuity
Connector Terminal Connector Terminal
E7 22 RH D111
1Yes
LH D110
PKIA5242E
IPDM E/R Rear combination lamp
(Side marker) Continuity
Connector Terminal Connector Terminal
E7 22 RH B219
1Yes
LH B57
PKIA5243E
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LT-150
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2006 December 2006 FX35/FX45
6. CHECK GROUND
1. Turn ignition switch OFF.
2. Check continuity between front side maker lamp harness con- nector and ground.
3. Check continuity between parking lamp harness connector and ground.
4. Check continuity between license plate lamp harness connector and ground.
5. Check continuity between rear combination lamp harness con- nector and ground.
OK or NG
OK >> Check bulb.
NG >> Repair harness or connector.
Front side marker
lamp connector Terminal
Ground Continuity
RH E22 2Yes
LH E42
PKIA5244E
Parking lamp con-
nector Terminal
Ground Continuity
RH E23 3Yes
LH E43
PKIC9688E
License plate lamp
connector Te r m i n a l
Ground Continuity
RH D111 2Yes
LH D110
PKIA5246E
Rear combination
lamp (Side marker) connector Terminal
Ground Continuity
RH B219 2Yes
LH B57
PKIA5247E
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Tail Lamp Does Not OperateNKS003HC
1. CHECK STOP LAMP AND TURN SIGNAL LAMP
Make sure stop lamps and turn signal lamps is illuminated.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK INPUT SIGNAL
Check voltage between rear combination lamp control unit harness
connector B65 terminal 2 and ground.
OK or NG
OK >> Replace rear combination lamp control unit.
NG >> Repair harness or connector.
3. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Check voltage between rear combination lamp control unit har- ness connector B65 terminal 1 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK GROUND CIRCUIT
1. Disconnect rear combination lamp control unit connector.
2. Check continuity between rear combination lamp control unit harness connector B65 terminal 7 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
(+)
(-) Condition Voltage
Rear com-
bination
lamp con-
trol unit
connector Terminal
B65 2 Ground Lighting switch 1ST
position is ON Battery voltage
Lighting switch 1ST position is OFF Approx. 0 V
PKIA5248E
1 – Ground : Battery voltage.
PKIB3526E
7 – Ground : Continuity should exist.
SKIA5908E