Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Quest 2004-2009 Approved Nissan Quest 2005 LT
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K ELECTRICAL
A
B
SECTION
LIGHTING SYSTEM C
D
E
CONTENTS
PRECAUTIONS ......................................................... 4 . HEADLAMP (OUTER SIDE), FOR LOW BEAM 27 ... F
Precautions for Supplemental Restraint System HEADLAMP (INNER SIDE), FOR HIGH BEAM... 27
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- FRONT TURN SIGNAL/PARKING LAMP .......... 27 .
SIONER" ................................................................. 4
. Removal and Installation ....................................... 28 . G
General precautions for service operations ............ 5 . Disassembly and Assembly ................................... 28 .
Wiring Diagrams and Trouble Diagnosis ................. 5 . HEADLAMP (FOR CANADA) - DAYTIME LIGHT
HEADLAMP (FOR USA) ........................................... 6 . SYSTEM - ................................................................. 29
.
H
Component Parts and Harness Connector Location 6 ..... Component Parts and Harness Connector Location 29 ...
System Description ................................................. 6 . System Description ................................................ 29 .
OUTLINE .............................................................. 6
. HEADLAMP OPERATION .................................. 30 .
BATTERY SAVER CONTROL ............................. 7 . BATTERY SAVER CONTROL ............................ 31 . I
AUTO LIGHT OPERATION .................................. 7 . AUTO LIGHT OPERATION ................................ 31 .
VEHICLE SECURITY SYSTEM (PANIC ALARM) 7 ..... DAYTIME LIGHT OPERATION .......................... 31 .
CAN Communication System Description ............... 7 . OPERATION ....................................................... 32 . J
Wiring Diagram -- H/LAMP -- ................................ 8 . CAN Communication System Description ............. 32 .
Terminals and Reference Values for BCM ............ 10 . Schematic .............................................................. 33
.
Terminals and Reference Values for IPDM E/R .....11 . Wiring Diagram -- DTRL -- .................................. 34 . LT
How to Proceed With Trouble Diagnosis ................11 . Trouble Diagnoses ................................................ 37 .
Preliminary Check ................................................. 12 . DAYTIME LIGHT CONTROL UNIT INSPECTION
CHECK POWER SUPPLY AND GROUND CIR- TABLE ................................................................ 37
.
CUIT ................................................................... 12
. Aiming Adjustment ................................................. 38 . L
CONSULT-II Function (BCM) ................................ 14 . Bulb Replacement ................................................. 38 .
CONSULT-II OPERATION ................................. 14 . Removal and Installation of Headlamp .................. 38 .
WORK SUPPORT .............................................. 15 . Disassembly and Assembly of Headlamp ............. 38 . M
DATA MONITOR ................................................ 15 . Removal and Installation of Daytime Light Control
ACTIVE TEST .................................................... 16 . Unit ........................................................................ 38
.
SELF-DIAGNOSTIC RESULTS ......................... 16 . Removal and Installation of Daytime Light Relay ... 38
CONSULT-II Function (IPDM E/R) ........................ 17 . AUTO LIGHT SYSTEM ............................................ 39 .
CONSULT-II OPERATION ................................. 17 . Component Parts and Harness Connector Location 39 ...
DATA MONITOR ................................................ 18 . System Description ................................................ 39 .
ACTIVE TEST .................................................... 18 . OUTLINE ............................................................ 39 .
Headlamp HI Does Not Illuminate (Both Sides) .... 19 . COMBINATION SWITCH READING FUNCTION 40 ...
Headlamp HI Does Not Illuminate (One Side) ...... 21 . EXTERIOR LAMP BATTERY SAVER CONTROL 40 ...
High-Beam Indicator Lamp Does Not Illuminate ... 22 DELAY TIMER FUNCTION ................................ 40 .
Headlamp LO Does Not Illuminate (Both Sides) ... 22 CAN Communication System Description ............. 40 .
Headlamp LO Does Not Illuminate (One Side) ..... 24 . Major Components and Functions ......................... 40 .
Headlamps Do Not Turn OFF ............................... 25 . Schematic .............................................................. 41
.
Aiming Adjustment ................................................ 26 . Wiring Diagram -- AUTO/L -- ............................... 42 .
LOW BEAM AND HIGH BEAM .......................... 26 . Terminals and Reference Values for BCM ............. 45 .
Bulb Replacement ................................................. 27 . Terminals and Reference Values for IPDM E/R ..... 46 .
Revision: September 2004 LT-1 2005 Quest
How to Proceed With Trouble Diagnosis ............... 47 . DATA MONITOR .................................................79 .
Preliminary Check ................................................. 47 . ACTIVE TEST .....................................................79 .
SETTING CHANGE FUNCTIONS ...................... 47 . Turn Signal Lamp Does Not Operate .....................80 .
CHECK BCM CONFIGURATION ....................... 47 . Rear Turn Signal Lamp Does Not Operate ............81 .
CHECK POWER SUPPLY AND GROUND CIR- Hazard Warning Lamp Does Not Operate But Turn
CUIT ................................................................... 47
. Signal Lamps Operate ...........................................82 .
CONSULT-II Function (BCM) ................................. 49 . Turn Signal Indicator Lamp Does Not Operate ......83 .
CONSULT-II OPERATION .................................. 49 . Bulb Replacement (Front Turn Signal Lamp) .........84 .
WORK SUPPORT .............................................. 50 . Bulb Replacement (Rear Turn Signal Lamp) .........84 .
DATA MONITOR ................................................. 50 . Removal and Installation of Front Turn Signal Lamp ...84
ACTIVE TEST .................................................... 51 . Removal and Installation of Rear Turn Signal Lamp...84
CONSULT-II Function (IPDM E/R) ......................... 51 . CORNERING LAMP .................................................85 .
CONSULT-II OPERATION .................................. 52 . Component Parts and Harness Connector Location ...85
DATA MONITOR ................................................. 52 . System Description ................................................85 .
ACTIVE TEST .................................................... 53 . OUTLINE ............................................................85.
Trouble Diagnosis Chart by Symptom ................... 54 . CORNERING LAMP OPERATION .....................85 .
Lighting Switch Inspection ..................................... 54 . COMBINATION SWITCH READING FUNCTION ...86
Optical Sensor System Inspection ......................... 55 . CAN Communication System Description .............86 .
Removal and Installation of Optical Sensor ........... 56 . Schematic ..............................................................87
.
FRONT FOG LAMP ................................................. 57 . Wiring Diagram -- CORNER -- ............................88 .
Component Parts and Harness Connector Location 57 ... Terminals and Reference Values for BCM .............91 .
System Description ................................................ 57 . Terminals and Reference Values for IPDM E/R .....92 .
OUTLINE ............................................................ 57
. How to Proceed With Trouble Diagnosis ...............92 .
COMBINATION SWITCH READING FUNCTION 58 ... Preliminary Check ..................................................92 .
EXTERIOR LAMP BATTERY SAVER CONTROL 58 ... CHECK POWER SUPPLY AND GROUND CIR-
CAN Communication System Description ............. 58 . CUIT ....................................................................92
.
Wiring Diagram -- F/FOG -- ................................. 59 . CONSULT-II Function (IPDM E/R) .........................94 .
Terminals and Reference Values for BCM ............. 61 . CONSULT-II OPERATION ..................................94 .
Terminals and Reference Values for IPDM E/R ..... 62 . DATA MONITOR .................................................94 .
How to Proceed With Trouble Diagnosis ............... 62 . ACTIVE TEST .....................................................95 .
Preliminary Check ................................................. 63 . Cornering Lamp Does Not Operate .......................95 .
CHECK BCM CONFIGURATION ....................... 63 . Bulb Replacement ..................................................97 .
CHECK POWER SUPPLY AND GROUND CIR- LIGHTING AND TURN SIGNAL SWITCH ...............98 .
CUIT ................................................................... 63
. Removal and Installation ........................................98 .
CONSULT-II Functions .......................................... 64 . HAZARD SWITCH ....................................................99 .
Front Fog Lamps Do Not Illuminate (Both Sides) ... 64 Removal and Installation ........................................99 .
Front Fog Lamp Does Not Illuminate (One Side) ... 65 COMBINATION SWITCH ....................................... 100 .
Aiming Adjustment ................................................. 66 . Wiring Diagram -- COMBSW -- ......................... 100 .
Bulb Replacement ................................................. 67 . Combination Switch Reading Function ................ 101 .
Removal and Installation ....................................... 67 . CONSULT-II Function (BCM) ............................... 101 .
TURN SIGNAL AND HAZARD WARNING LAMPS... 68 CONSULT-II OPERATION ................................ 101 .
Component Parts and Harness Connector Location 68 ... DATA MONITOR ............................................... 102 .
System Description ................................................ 68 . Combination Switch Inspection ............................ 103 .
OUTLINE ............................................................ 68
. Removal and Installation ...................................... 105 .
TURN SIGNAL OPERATION .............................. 68 . Switch Circuit Inspection ...................................... 105 .
HAZARD LAMP OPERATION ............................ 69 . STOP LAMP ........................................................... 106 .
REMOTE KEYLESS ENTRY SYSTEM OPERA- System Description .............................................. 106 .
TION ................................................................... 70
. Wiring Diagram -- STOP/L -- ............................. 107 .
COMBINATION SWITCH READING FUNCTION 70 ... High-Mounted Stop Lamp .................................... 108 .
CAN Communication System Description ............. 70 . BULB REPLACEMENT, REMOVAL AND
Schematic .............................................................. 71
. INSTALLATION ................................................. 108 .
Wiring Diagram -- TURN -- .................................. 72 . Stop Lamp ............................................................ 108
.
Terminals and Reference Values for BCM ............. 75 . BULB REPLACEMENT ..................................... 108 .
How to Proceed With Trouble Diagnosis ............... 76 . REMOVAL AND INSTALLATION ...................... 108 .
Preliminary Check ................................................. 77 . BACK-UP LAMP .................................................... 109 .
CHECK POWER SUPPLY AND GROUND CIR- Wiring Diagram -- BACK/L -- ............................. 109 .
CUIT ................................................................... 77
. Bulb Replacement ................................................ 110 .
CONSULT-II Function (BCM) ................................. 78 . Removal and Installation ...................................... 110 .
CONSULT-II OPERATION .................................. 78 . PARKING, LICENSE PLATE AND TAIL LAMPS ... 111 .
Revision: September 2004 LT-2 2005 Quest
Component Parts and Harness Connector Location 111 .. POWER SUPPLY AND GROUND ................... 130 .
System Description .............................................. 111 . SWITCH OPERATION ..................................... 131 . A
OPERATION BY LIGHTING SWITCH ..............112 . ROOM LAMP TIMER OPERATION ................. 132 .
COMBINATION SWITCH READING FUNCTION ..112 INTERIOR LAMP BATTERY SAVER CONTROL 132 .
EXTERIOR LAMP BATTERY SAVER CONTROL ..112 Schematic ............................................................ 134
. B
CAN Communication System Description ............112 . Wiring Diagram -- INT/L -- ................................. 136 .
Schematic ............................................................113 . Terminals and Reference Values for BCM ........... 143 .
Wiring Diagram -- TAIL/L -- ................................114 . How to Proceed With Trouble Diagnosis ............. 144 .
Terminals and Reference Values for BCM ...........117 . Preliminary Check ............................................... 144 . C
Terminals and Reference Values for IPDM E/R ...118 . SWITCH INSPECTION .................................... 144 .
How to Proceed With Trouble Diagnosis ..............118 . INSPECTION FOR POWER SUPPLY AND
Preliminary Check ................................................118 . GROUND CIRCUIT .......................................... 144 . D
CHECK POWER SUPPLY AND GROUND CIR- CONSULT-II Function (BCM) .............................. 145 .
CUIT ..................................................................118
. CONSULT-II OPERATION ................................ 145 .
CONSULT-II Functions .........................................119 . WORK SUPPORT ............................................ 146 . E
Parking, License Plate and/or Tail Lamps Do Not DATA MONITOR .............................................. 146 .
Illuminate ............................................................. 120. ACTIVE TEST .................................................. 147 .
Parking, License Plate and Tail Lamps Do Not Turn Room/Map Lamp Control Does Not Operate ...... 148 .
OFF (After Approx. 10 Minutes) .......................... 123 . Personal Lamp Control Does Not Operate (Room/ F
Front Parking Lamp ............................................. 124 . Map Lamps Operate) ........................................... 150 .
BULB REPLACEMENT .................................... 124 . Ignition Keyhole Illumination Control Does Not
Tail Lamp ............................................................. 124 . Operate ................................................................ 151
. G
BULB REPLACEMENT .................................... 124 . All Step/Foot/Puddle Lamps Do Not Operate ...... 152 .
REAR COMBINATION LAMP ............................... 125 . All Interior Room Lamps Do Not Operate ............ 153 .
Bulb Replacement ............................................... 125 . ILLUMINATION ...................................................... 154 . H
Removal and Installation ..................................... 125 . Component Parts and Harness Connector Location 154 .
......................................................................... 125
. System Description .............................................. 154 .
TRAILER TOW ...................................................... 126 . ILLUMINATION OPERATION BY LIGHTING
I
Component Parts and Harness Connector Location 126 . SWITCH ........................................................... 155
.
System Description ............................................. 126 . SWITCH OPERATION ..................................... 156 .
TRAILER TAIL LAMP OPERATION ................. 126 . EXTERIOR LAMP BATTERY SAVER CONTROL 156 .
TRAILER STOP, TURN SIGNAL AND HAZARD CAN Communication System Description ........... 157 . J
LAMP OPERATION ......................................... 126 . Schematic ............................................................ 158
.
Wiring Diagram -- T/TOW -- .............................. 127 . Wiring Diagram -- ILL -- ..................................... 160 .
Trouble Diagnoses .............................................. 128 . Removal and Installation ..................................... 169 . LT
TRAILER TOW CONTROL UNIT INSPECTION ILLUMINATION CONTROL SWITCH ............... 169 .
TABLE .............................................................. 128 . BULB SPECIFICATIONS ....................................... 170 .
INTERIOR ROOM LAMP ....................................... 129 . Headlamp ............................................................ 170
. L
Component Parts and Harness Connector Location 129 . Exterior Lamp ...................................................... 170
.
System Description ............................................. 130 . Interior Lamp/Illumination .................................... 170 .
M
Revision: September 2004 LT-3 2005 Quest
PRECAUTIONS
PRECAUTIONS PFP:00011
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS005KV
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Revision: September 2004 LT-4 2005 Quest
PRECAUTIONS
General precautions for service operations EKS005KW
A
q Never work with wet hands.
q Turn the lighting switch OFF before disconnecting and connecting the connector.
q When checking the headlamp on/off operation, check it on vehicle and with the power connected to the B
vehicle-side connector.
q Do not touch the headlamp bulb glass surface with bare hands or allow oil or grease to get on it. Do not
touch the headlamp bulb just after the headlamp is turned off, because it is very hot.
C
q When the bulb has burned out, wrap it in a thick vinyl bag and discard. Do not break the bulb.
q Leaving the bulb removed from the headlamp housing for a long period of time can deteriorate the perfor-
mance of the lens and reflector (dirt, clouding). Always prepare a new bulb and have it on hand when
D
replacing the bulb.
q Do not use organic solvent (paint thinner or gasoline) to clean lamps and to remove old sealant.
Wiring Diagrams and Trouble Diagnosis EKS005KX E
When you read wiring diagrams, refer to the following:
q Refer to GI-12, "How to Read Wiring Diagrams" in GI section.
F
q Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution in PG section.
When you perform trouble diagnosis, refer to the following:
q Refer to GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section. G
q Refer to GI-25, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section.
H
I
J
LT
L
M
Revision: September 2004 LT-5 2005 Quest
HEADLAMP (FOR USA)
HEADLAMP (FOR USA) PFP:26010
Component Parts and Harness Connector Location EKS0065X
WKIA3141E
System Description EKS0065Y
Control of the headlamp system operation is dependent upon the position of the combination switch (lighting
switch). When the lighting switch is placed in the 2ND position, the BCM (body control module) receives input
requesting the headlamps (and tail lamps) illuminate. This input is communicated to the IPDM E/R (intelligent
power distribution module engine room) across the CAN communication lines. The CPU (central processing
unit) of the IPDM E/R controls the headlamp high and headlamp low relay coils. When energized, these relays
direct power to the respective headlamps, which then illuminate.
OUTLINE
Power is supplied at all times
q to headlamp high relay, located in the IPDM E/R, and
q to headlamp low relay, located in the IPDM E/R, and
q through 50A fusible link (letter j , located in the fuse and fusible link box)
q to BCM terminal 55, and
q through 15A fuse [No. 3, located in the fuse block (J/B)]
q to BCM terminal 42.
With the ignition switch in the ON or START position, power is supplied
q through 10A fuse [No. 16, located in the fuse block (J/B)]
q to BCM terminal 38.
With the ignition switch in the ACC or ON position, power is supplied
q through 10A fuse [No. 4, located in the fuse block (J/B)]
Revision: September 2004 LT-6 2005 Quest
HEADLAMP (FOR USA)
q to BCM terminal 11.
Ground is supplied A
q to BCM terminal 52
q through grounds M57, M61 and M79, and
B
q to IPDM E/R terminals 38 and 60
q through grounds E9, E15 and E24.
Low Beam Operation C
With the lighting switch in 2ND position, the BCM receives input requesting the headlamps to illuminate. This
input is communicated to the IPDM E/R across the CAN communication lines. The CPU of the IPDM E/R con-
trols the headlamp low relay coil. When energized, this relay directs power D
q through 15A fuse (No. 36, located in the IPDM E/R)
q through IPDM E/R terminal 20
q to headlamp RH terminal 1, and E
q through 15A fuse (No. 45, located in the IPDM E/R)
q through IPDM E/R terminal 30
q to headlamp LH terminal 1. F
Ground is supplied
q to headlamp LH and RH terminal 2
G
q through grounds E9, E15 and E24.
With power and ground supplied, low beam headlamps illuminate.
High Beam Operation/Flash-to-Pass Operation H
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM receives input request-
ing the headlamp high beams to illuminate. This input is communicated to the IPDM E/R and combination
meter across the CAN communication lines. The CPU of the combination meter controls the ON/OFF status of I
the HIGH BEAM indicator. The CPU of the IPDM E/R controls the headlamp high relay coil. When energized,
this relay directs power
q through 10A fuse (No. 40, located in the IPDM E/R) J
q through IPDM E/R terminal 27
q to headlamp RH terminal 1, and
q through 10A fuse (No. 38, located in the IPDM E/R) LT
q through IPDM E/R terminal 28
q to headlamp LH terminal 1.
Ground is supplied L
q to headlamp LH and RH terminal 2
q through grounds E9, E15 and E24.
M
With power and ground supplied, the high beam headlamps illuminate.
BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON) and the ignition switch is turned from
ON or ACC to OFF, the battery saver control feature is activated.
Under this condition, the headlamps remain illuminated for 5 minutes, unless the combination switch (lighting
switch) position is changed. If the combination switch (lighting switch) position is changed, then the headlamps
are turned off.
AUTO LIGHT OPERATION
Refer to LT-39, "System Description" for auto light operation.
VEHICLE SECURITY SYSTEM (PANIC ALARM)
The vehicle security system (panic alarm) will flash the high beams if the system is triggered. Refer to BL-59,
"Panic Alarm Operation" .
CAN Communication System Description EKS0065Z
Refer to LAN-5, "CAN COMMUNICATION" .
Revision: September 2004 LT-7 2005 Quest
HEADLAMP (FOR USA)
Wiring Diagram -- H/LAMP -- EKS00660
WKWA1913E
Revision: September 2004 LT-8 2005 Quest
HEADLAMP (FOR USA)
A
B
C
D
E
F
G
H
I
J
LT
L
M
WKWA1914E
Revision: September 2004 LT-9 2005 Quest
HEADLAMP (FOR USA)
Terminals and Reference Values for BCM EKS00661
Measuring condition
Terminal Wire Reference value
Signal name Ignition
No. color Operation or condition (Approx.)
switch
Lighting, turn, wiper OFF
2 GR/R Combination switch input 5 ON
Wiper dial position 4
SKIA5291E
Lighting, turn, wiper OFF
3 G/Y Combination switch input 4 ON
Wiper dial position 4
SKIA5292E
Lighting, turn, wiper OFF
4 G/R Combination switch input 3 ON
Wiper dial position 4
SKIA5291E
5 G/B Combination switch input 2
Lighting, turn, wiper OFF
ON
6 G/W Combination switch input 1 Wiper dial position 4
SKIA5292E
11 V Ignition switch (ACC) ACC -- Battery voltage
Lighting, turn, wiper OFF
32 R/G Combination switch output 5 ON
Wiper dial position 4
SKIA5291E
Lighting, turn, wiper OFF
33 R/Y Combination switch output 4 ON
Wiper dial position 4
SKIA5292E
Lighting, turn, wiper OFF
34 R Combination switch output 3 ON
Wiper dial position 4
SKIA5291E
Revision: September 2004 LT-10 2005 Quest
HEADLAMP (FOR USA)
Measuring condition
Terminal Wire Reference value A
Signal name Ignition
No. color Operation or condition (Approx.)
switch
35 R/B Combination switch output 2
B
Lighting, turn, wiper OFF
ON
36 R/W Combination switch output 1 Wiper dial position 4
C
SKIA5292E
38 G Ignition switch (ON) ON -- Battery voltage D
39 L CAN-H -- -- --
40 P CAN-L -- -- --
E
42 Y/G Battery power supply OFF -- Battery voltage
52 B/W Ground ON -- 0V
55 W/B Battery power supply (fusible link) OFF -- Battery voltage F
Terminals and Reference Values for IPDM E/R EKS00662
Measuring condition G
Terminal Wire Reference value
Signal name Ignition
No. color Operation or condition (Approx.)
switch
Lighting switch OFF 0V H
20 R/Y Headlamp low (RH) ON
2ND position ON Battery voltage
Lighting switch OFF 0V
27 L/W Headlamp high (RH) ON HIGH or PASS I
position ON Battery voltage
Lighting switch OFF 0V
28 G Headlamp high (LH) ON HIGH or PASS J
position ON Battery voltage
Lighting switch OFF 0V
30 L Headlamp low (LH) ON
2ND position ON Battery voltage LT
38 B Ground ON -- 0V
48 L CAN-H -- -- --
L
49 P CAN-L -- -- --
60 B Ground ON -- 0V
M
How to Proceed With Trouble Diagnosis EKS00663
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-6, "System Description" .
3. Perform the Preliminary Check. Refer to LT-12, "Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the headlamp operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
Revision: September 2004 LT-11 2005 Quest
HEADLAMP (FOR USA)
Preliminary Check EKS00664
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown fuses or fusible link.
Unit Power source Fuse No.
j
Battery
3
BCM
Ignition switch ON or START position 16
Ignition switch ACC or ON position 4
36
38
IPDM E/R Battery
40
45
Refer to LT-8, "Wiring Diagram -- H/LAMP --" .
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-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM harness connector and ground.
Terminals Ignition switch position
(+)
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