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K ELECTRICAL

B
SECTION
DRIVER INFORMATION SYSTEM C

E
CONTENTS
METERS AND GAUGES ........................................... 3 . (QR25DE) ........................................................... 22
. F
Component Parts and Harness Connector Location 3 ..... INSPECTION/FUEL LEVEL SENSOR UNIT
System Description ................................................. 4
. AND FUEL PUMP .............................................. 23 .
UNIFIED CONTROL METER ............................... 4 . INSPECTION/WATER TEMPERATURE G
HOW TO CHANGE THE DISPLAY FOR ODO/ GAUGE (QG18DE MODELS) ............................ 24 .
TRIP METER ....................................................... 4
. INSPECTION/WATER TEMPERATURE
POWER SUPPLY AND GROUND CIRCUIT ....... 4 . GAUGE (QR25DE MODELS) ............................ 25 .
H
WATER TEMPERATURE GAUGE ....................... 4 . Electrical Components Inspection ......................... 26 .
TACHOMETER .................................................... 5 . FUEL LEVEL SENSOR UNIT CHECK ............... 26 .
FUEL GAUGE ...................................................... 5. VEHICLE SPEED SENSOR SIGNAL CHECK ... 26
SPEEDOMETER .................................................. 5 . WARNING LAMPS ................................................... 27 . I
CAN Communication ............................................... 5 . Schematic .............................................................. 27
.
CAN COMMUNICATION UNIT ............................ 5 . WITHOUT TACHOMETER ................................. 27 .
TYPE 1 ................................................................. 6
. WITH TACHOMETER ........................................ 28 . J
TYPE 2 ................................................................. 6
. Wiring Diagram -- WARN -- ................................. 29 .
TYPE 3 ................................................................. 7
. WITHOUT TACHOMETER ................................. 29 .
Combination Meter .................................................. 8
. WITH TACHOMETER ........................................ 32 . DI
WITHOUT TACHOMETER .................................. 8 . Electrical Components Inspection ......................... 36 .
WITH TACHOMETER (QG18DE MODELS) ........ 9 . FUEL WARNING LAMP OPERATION CHECK ... 36
WITH TACHOMETER (QR25DE MODELS) ...... 10 . OIL PRESSURE SWITCH CHECK .................... 36 .
Schematic ..............................................................11
. DIODE CHECK .................................................. 36 . L
WITHOUT TACHOMETER .................................11 . WARNING CHIME .................................................... 37 .
WITH TACHOMETER ........................................ 12 . Component Parts and Harness Connector Location 37 ...
Wiring Diagram -- METER -- ............................... 13 . System Description ................................................ 38 . M
WITHOUT TACHOMETER ................................ 13 . WITHOUT POWER DOOR LOCKS ................... 38 .
WITH TACHOMETER (QG18DE MODELS) ...... 14 . WITH POWER DOOR LOCKS ........................... 38 .
WITH TACHOMETER (QR25DE MODELS) ...... 15 . Wiring Diagram -- CHIME -- ................................ 40 .
Meter/Gauge Operation and Odo/Trip Meter Seg- WITHOUT POWER DOOR LOCKS ................... 40 .
ment Check in Diagnosis Mode ............................ 16 . WITH POWER DOOR LOCKS ........................... 41 .
DIAGNOSIS FUNCTION .................................... 16 . CONSULT-II Inspection Procedure (With Power
HOW TO ALTERNATE DIAGNOSIS MODE ...... 16 . Door Locks) ........................................................... 42
.
Trouble Diagnoses ................................................ 17. "KEY WARN ALM"/"LIGHT WARN ALM"/"SEAT
PRELIMINARY CHECK ..................................... 17 . BELT ALM" ......................................................... 42.
SYMPTOM CHART ............................................ 18 . CONSULT-II Application Items (With Power Door
POWER SUPPLY AND GROUND CIRCUIT Locks) .................................................................... 43
.
CHECK ............................................................... 19
. "KEY WARN ALARM" ......................................... 43 .
INSPECTION/VEHICLE SPEED SENSOR ....... 21 . "LIGHT WARN ALM" .......................................... 43 .
INSPECTION/ENGINE REVOLUTION SIGNAL "SEAT BELT ALM" .............................................. 43 .
(QG18DE) .......................................................... 21
. Trouble Diagnoses (Without Power Door Locks) ... 44
INSPECTION/ENGINE REVOLUTION SIGNAL SYMPTOM CHART ............................................ 44 .

DI-1
POWER SUPPLY AND GROUND CIRCUIT CHECK ...............................................................49
.
CHECK ............................................................... 44
. DIAGNOSTIC PROCEDURE 1 (LIGHTING
DIAGNOSTIC PROCEDURE 1 (LIGHTING SWITCH INPUT SIGNAL CHECK) .....................50 .
SWITCH INPUT SIGNAL CHECK) ..................... 45 . DIAGNOSTIC PROCEDURE 2 (KEY SWITCH
DIAGNOSTIC PROCEDURE 2 (KEY SWITCH INSERT SIGNAL CHECK) ..................................51 .
INSERT SIGNAL CHECK) ................................. 45 . DIAGNOSTIC PROCEDURE 3 (SEAT BELT
DIAGNOSTIC PROCEDURE 3 (SEAT BELT BUCKLE SWITCH LH CHECK) ..........................52 .
BUCKLE SWITCH LH CHECK) .......................... 46 . DIAGNOSTIC PROCEDURE 4 ...........................53 .
DIAGNOSTIC PROCEDURE 4 .......................... 47 .
Trouble Diagnoses (With Power Door Locks) ........ 49 .
SYMPTOM CHART ............................................ 49 .
POWER SUPPLY AND GROUND CIRCUIT

DI-2
METERS AND GAUGES

METERS AND GAUGES PFP:24814
A
Component Parts and Harness Connector Location EKS00399

WKIA1045E
DI

DI-3
METERS AND GAUGES

System Description EKS0039A

UNIFIED CONTROL METER
q Speedometer, odo/trip meter, tachometer (if equipped), fuel gauge and water temperature gauge are con-
trolled totally by control unit built-in combination meter.
q Digital meter is adopted for odo/trip meter.*
*The record of the odometer is kept even if the battery cable is disconnected. The record of the trip meter
is erased when the battery cable is disconnected.
q Odo/trip meter segment can be checked in diagnosis mode.
q Meter/gauge can be checked in diagnosis mode.
HOW TO CHANGE THE DISPLAY FOR ODO/TRIP METER

SEL253V

NOTE:
Turn ignition switch to the ON position to operate odo/trip meter.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times:
q through 10A fuse [No. 12, located in the fuse block (J/B)]
q to combination meter terminal 25 (without tachometer) or 42 (with tachometer).
With the ignition switch in the ON or START position, power is supplied:
q through 10A fuse [No. 30, located in the fuse block (J/B)]
q to combination meter terminal 26 (without tachometer), or
q to combination meter terminals 41 and 6 (with tachometer).
Ground is supplied:
q to combination meter terminal 27 (without tachometer) or 48 (with tachometer)
q through body grounds M28 and M54.
WATER TEMPERATURE GAUGE
QG18DE
The water temperature gauge indicates the engine coolant temperature.
ECM provides a water temperature signal to combination meter for water temperature gauge with CAN com-
munication line.
QR25DE
The water temperature gauge indicates the engine coolant temperature. The reading on the gauge is based
on the signal from the ECM.
The water temperature gauge is regulated by a signal:
q from terminal 32 of the ECM

DI-4
METERS AND GAUGES

q to combination meter terminal 43 for the water temperature gauge.
A
TACHOMETER
QG18DE Models
The tachometer indicates engine speed in revolutions per minute (rpm). B
ECM provides an engine speed signal to combination meter for tachometer with CAN communication line.
QR25DE Models
The tachometer indicates engine speed in revolutions per minute (rpm). C
The tachometer is regulated by a signal:
q from terminal 36 of the ECM
q to combination meter terminal 45 for the tachometer. D
FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
E
The fuel gauge is regulated by a variable ground signal supplied:
q to combination meter terminal 30 (without tachometer) or 44 (with tachometer) for the fuel gauge
q from terminal 2 of the fuel level sensor unit and fuel pump
F
q through terminal 5 of the fuel level sensor unit and fuel pump, and
q through body grounds B13 and B19.
SPEEDOMETER G
The combination meter receives a voltage signal from the vehicle speed sensor for the speedometer.
The voltage is supplied:
q to combination meter terminal 29 (without tachometer) or 47 (with tachometer) for the speedometer H
q from terminal 1 (with QG18DE), or terminal + (with QR25DE) of the vehicle speed sensor.
The speedometer converts the voltage into the vehicle speed displayed.
I
CAN Communication EKS003LD

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- J
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. DI
Each control unit transmits/receives data but selectively reads required data only.
CAN COMMUNICATION UNIT
Body type Sedan L
Axle 2WD
Engine QG18DE QR25DE
M
Transmission A/T M/T A/T
CAN communication unit
ECM

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