Page 577 of 3051

12 CHECK ECM POWER SUPPLY CIRCUIT-IV
1. Disconnect ECM relay. (For ECM relay location, refer to ªEngine Control Compartment Parts Locationº.)
2. Check voltage between ECM relay terminal 3 and ground with CONSULT-II or tester.
SEF295X
Or, ECM relay is locating on relay box in engine compartment.
OK or NG
OK©GO TO 14.
NG©GO TO 13.
13 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E76, F36
+Harness connectors M72, F44 (where fitted)
+Harness connectors M11, E106 (LHD models) (where fitted)
+Harness connectors M78, E120 (RHD models) (where fitted)
+Joint connector F46 (where fitted)
+Harness for open or short between ECM relay and 10A fuse
©Repair open circuit or short to ground or short to power in harness or connectors.
14 CHECK HARNESS CONTINUITY BETWEEN ECM RELAY AND ECM FOR OPEN AND SHORT
1. Check harness continuity between ECM terminals 110, 112 and ECM relay terminal 5.
Refer to WIRING DIAGRAM.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 16.
NG©GO TO 15.
15 DETECT MALFUNCTIONING PART
Check the following.
+Joint connector-3
+Harness connector E76, F36 (where fitted)
+Joint connector F46 (where fitted)
+Harness for open or short between ECM and ECM relay
©Repair open circuit or short to ground or short to power in harness or connectors.
TROUBLE DIAGNOSIS FOR POWER SUPPLYQG18DE
Main Power Supply and Ground Circuit (Cont'd)
EC-152
Page 801 of 3051
Wiring DiagramNLEC0490MODELS WITH FUSE AND FUSIBLE LINK BOX E43NLEC0490S03
YEC682
DTC P1217 OVERHEAT (COOLING SYSTEM)QG18DE
Wiring Diagram
EC-376
Page 802 of 3051
MODELS WITH FUSE AND FUSIBLE LINK BOX E90NLEC0490S04
YEC890
DTC P1217 OVERHEAT (COOLING SYSTEM)QG18DE
Wiring Diagram (Cont'd)
EC-377
Page 1310 of 3051
Wiring DiagramNLEC1623MODELS WITH FUSE AND FUSIBLE LINK BOX E43NLEC1623S03
YEC706
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Wiring Diagram
EC-885
Page 1311 of 3051
MODELS WITH FUSE AND FUSIBLE LINK BOX E90NLEC1623S04
YEC927
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Wiring Diagram (Cont'd)
EC-886
Page 1629 of 3051
Wiring DiagramNLEC0665MODELS WITH FUSE AND FUSIBLE LINK BOX E43NLEC0665S03
YEC725
DTC P1217 OVER HEATYD22DDTI
Wiring Diagram
EC-1204
Page 1630 of 3051
MODELS WITH FUSE AND FUSIBLE LINK BOX E90NLEC0665S04
YEC863
DTC P1217 OVER HEATYD22DDTI
Wiring Diagram (Cont'd)
EC-1205
Page 1732 of 3051

ELECTRICAL SYSTEM
SECTION
EL
CONTENTS
PRECAUTIONS...............................................................4
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............4
Wiring Diagrams and Trouble Diagnosis .....................4
HARNESS CONNECTOR................................................5
Description ...................................................................5
STANDARDIZED RELAY................................................7
Description ...................................................................7
POWER SUPPLY ROUTING...........................................9
Schematic ..................................................................10
Wiring Diagram - POWER - (Models with fuse
and fusible link box E43) ...........................................14
Wiring Diagram - POWER - (Models with fuse
and fusible link box E90) ...........................................24
Inspection...................................................................32
GROUND........................................................................33
Ground Distribution (Models with fuse and fusible
link box E43) ..............................................................33
Ground Distribution (Models with fuse and fusible
link box E90) ..............................................................48
COMBINATION SWITCH..............................................64
Check .........................................................................64
Replacement ..............................................................66
STEERING SWITCH......................................................67
Check .........................................................................67
HEADLAMP...................................................................69
Wiring Diagram - H/LAMP -.......................................69
Trouble Diagnoses.....................................................71
Bulb Replacement .....................................................71
Aiming Adjustment .....................................................72
HEADLAMP - DAYTIME LIGHT SYSTEM -.................73
System Description ....................................................73
Schematic ..................................................................74
Wiring Diagram - DTRL - ...........................................75
Trouble Diagnoses.....................................................81
Bulb Replacement .....................................................81
Aiming Adjustment .....................................................82
HEADLAMP - HEADLAMP AIMING CONTROL -........83
Wiring Diagram - H/AIM - ..........................................83PARKING, LICENSE AND TAIL LAMPS.....................87
Wiring Diagram - TAIL/L - ..........................................87
STOP LAMP..................................................................91
Wiring Diagram - STOP/L - .......................................91
BACK-UP LAMP............................................................93
Wiring Diagram - BACK/L - .......................................93
FRONT FOG LAMP.......................................................95
Wiring Diagram - F/FOG - .........................................95
Bulb Replacement .....................................................97
Aiming Adjustment .....................................................98
REAR FOG LAMP.........................................................99
Wiring Diagram - R/FOG -.........................................99
TURN SIGNAL AND HAZARD WARNING LAMPS...101
System Description ..................................................101
Wiring Diagram - TURN - ........................................102
Trouble Diagnoses...................................................106
ILLUMINATION............................................................107
Schematic ................................................................107
Wiring Diagram - ILL - .............................................109
INTERIOR ROOM LAMP............................................. 116
System Description .................................................. 116
Wiring Diagram - ROOM/L - .................................... 118
Trouble Diagnoses...................................................122
VANITY MIRROR AND LUGGAGE ROOM LAMPS..129
Wiring Diagram - INT/L - .........................................129
METERS AND GAUGES.............................................130
Component Parts and Harness Connector
Location ...................................................................130
System Description ..................................................130
Combination Meter ..................................................132
Schematic ................................................................134
Construction .............................................................136
Wiring Diagram - METER - .....................................137
Combination Meter Self-Diagnosis ..........................141
Trouble Diagnoses...................................................144
Electrical Components Inspection ...........................153
WARNING LAMPS......................................................155
Schematic ................................................................155
Wiring Diagram - WARN - .......................................156