ELECTRICAL SYSTEM
SECTION EL
CONTENTS
CENTRAL DOOR LOCK SYSTEM ................................. 2
Component Parts Location .......................................... 2
Circuit Diagram ............................................................ 2
Combination Meter (meter control unit) Input/
Output Signal Specifications
........................................ 2
Inspection before Trouble Diagnoses ......................... -3
Trouble Diagnoses ....................................................... 3
REMOTE CONTROL ENTRY SYSTEM .......................... 4
Component Parts Location .......................................... 4
Circuit Diagram ............................................................ 4
Remote Control Entry Control Unit Input/Output
Signal Specifications
.................................................... 5
System Check ............................................................. -5
Inspection before Trouble Diagnoses .......................... 6
Trouble Diagnoses ....................................................... 6
Component Parts inspection ....................................... 6
ID Code Entry Procedure ............................................ 7
POWER WINDOW SYSTEM ........................................... 8
System Description ..................................................... -8
Precautions ................................................................. -8
Component Parts Location .......................................... 8
Circuit Diagram ............................................................ 9
Power Window Main Switch Input/Output Signal
Specifications
............................................................... 9
Inspection before Trouble Diagnoses ........................ 11
Trouble Diagnoses .................................................... 11
SUNROOF SYSTEM ...................................................... 12
Component Parts Location ........................................ 12
Circuit Diagram .......................................................... 12
Sunroof Switch and Sunroof Motor Assembly
lnputiOutput Signal Specifications
............................. 12
AUTO LIGHT SYSTEM ................................................. 1 3
Component Parts Location ........................................ 13
Auto Light Control Unit Input/Output Signal
Specifications
............................................................. 13
Circuit Diagram ........................................................ 14
Trouble Diagnoses .................................................. I 4
..................................... XENON HEADLAMP SYSTEM 15
Trouble Diagnoses ..................................................... 15
IGNITION KEY-OPERATED ILLUMINATION
SYSTEM
................................................................... 7
Component Parts Location ........................................ 17
.......................................................... Circuit Diagram 17
Meter Control Unit InputlOutput Signal
....................................................... Specifications 1 7
METER ........................................................................\
18
Corn bination Meter .................................................... 18
Triple Meter ................................................................ 20
................................................ COMBINATION METER 21
.................................................... System Description 21
........................................ Component Parts Location 21
Diagnosis Function .................................................... 21
................................... Meter-related Circuit Diagram 22
..................................................... Trouble Diagnoses 23
Combination Meter InpuVOutput Signal
Specifications
............................................................ -25
..................................... Component Parts Inspection 26
TRIPLE METER ............................................................. 29
Special Service Tool ................................................... 29
........................................ Component Parts Location 29
Circuit Diagram .......................................................... 29
Triple Meter InputfOutput Signal Specifications ........ 30
Component Parts Inspection ..................................... 30
IGNITION KEY WARNING BUZZER AND LIGHT
WARNING BUZZER
...................................................... 31
Component Parts Location ........................................ 31
Circuit Diagram .......................................................... 31
Meter Control Unit InpuVOutput Signal
Specifications
............................................................. 31
FRONT WIPER .............................................................. 32
Component Parts Location ........................................ 32
Circuit Diagram .......................................................... 32
Front Wiper Input/Output Signal Specifications ........ 32
CENTRAL DOOR LOCK SYSTEM
Component
Parts Location
Door lock relay
LOCK -
Door lock relay
connector
1 LOCK 1
TK20 I I 5\41 1 (Brown) 1 11el j I 1
Combination meter
(Meter C/U) connector
I
Circuit Diagram
Driver door lock
Remote control entry
SW signal C/U connector
Lock signal
18. Unlock sign311 5 T 1
PMI main SW
(Central door lock SW)
----- I . RH door1
actuator 1 I I I Rear LH door I lock actuator I I I,,,,,,,------J
Driver door lock
actuator SW
P/'W main SW connector PNV main SW connector
(2-door Coupe) 1 (4-door Sedan) OCC3324 C
Combination Meter (meter control unit) Input/
Output Signal Specifications
-
I
. . 4 1 Driver door lock switch signal I
Specification
Approx. OV
Locked (OFF)
5
18
55
56
60
Operation or condition
Unlocked (ON1
Terminal No.
Approx.
5V
Signal name
Central door lock switch unlock signal
Central door lock switch lock signal
Ground Passenger and rear
RH 8 LH door lock
actuator lock signal
Passenger and rear RH & LH door lock actuator unlock siqnal Unlocked
(ON)
Operation other than above (OFF)
Locked (ON)
Operation other than above (OFF)
-
Central door lock switch is locked.
Central door lock switch is unlocked. Approx.
OV
Approx. 5V
Approx.
OV
Approx. 5V
Approx.
OV
Changes from approx. 12 to OV and back
to approx. 12V.
Changes from approx.
12 to OV and back
to approx. 12V.
REMOTE CONTROL ENTRY SYSTEM
1
Component Parts Location
Circuit Diagram
Key-in detection SW
Remote control entry I C/U connector -
Unlock signal
REMOTE CONTROL ENTRY SYSTEM
Remote Control Entry Control Unit
Terminal No.
InputIOutput Signal specifications
Signal name Operation or cond~t~on Specificatton
Close the driver door. (OFF) Approx.
12V Driver door
switch input signal . @ Open the driver door. (ON) Approx. OV
Close
all the doors. (OFF) Approx. 12V All door
switch input signal Ec Open one of the doors. (ON) Approx. OV
Driver door
lock actuator lock
output signal Lock with the remote control. Changes from
approx. 0 to 12V and back to approx. OV. t
Ground - Approx. OV BR Locked (OFF) Approx. 5V Driver door lock switch signal
Unlocked (ON) Approx. OV
Key-in detection switch input Insert (ON) Approx. 12V 87
signal
Ignition key Remove (OFF)
Approx. OV
ACC power supply Ignition switch to ACC Approx. 12V Rs
Passenger door and rear RH & Press the lock switch on the remote control. Changes
from approx. 5 to OV LH door lock output signal
and back to approx. 5V.
Passenger door and rear RH & Changes from approx. 5 to OV HA
LH door unlock output signal Press the unlock switch
on the remote control.
and back to approx. 5V.
Driver door lock actuator
Unlock with the remote control. Changes from approx. 0 to
unlock output signal 12V and back to approx. OV.
System Check
Easy way to confirm the func+ion of the remote control: Works
properly.
Program the remote control (A) to another vehicle
of the
same type and check if the remote control works properly. Does not work. is OK.
Turn
a radio ON. Touch the radio aerial with the remote
control (A). Press a switch on the remote control with . is heard.
the
remote
control on the aerial. Listen for noise.
(Radio frequency: around
78.6, 78.7, 78.8 MHz)
B f ' Works properly.
I
Program another remote control (6) to the vehicle
concerned and check if the remote control works properly. No noise
is heard. t The vehicle is OK.
Does not work.
Check item
Operation check
Remote control
(A) is OK. Remote control (A)
is
NG.
r The vehicle is NG. 0CC3078D
I
I System check A
Remote control
(A) is OK.
Remote control (A) is
NG.
System check B
The vehicle is OK.
Remote control (A) is NG. Program the remote control
(A) to the vehicle concerned again and check
for proper operation.
The vehicle is NG.
The vehicle is OK. Perform trouble diagnosis
to determine what causes the problem.
Check the remote control
(A) battery voltage.
The vehicle is NG. Check the
remote control (A) battery voltage and then perform trouble
diag- nosis to determine what causes the problem.
REMOTE CONTROL ENTRY SYSTEM
lnspection before Trouble Diagnoses
Check system.
Check that other systems that use the following signals work
properly.
Check that component connectors are connected properly.
Trouble Diagnoses
SYMPTOM CHART
Symptom
None of the doors lock with the remote
control switch.
None of the doors unlock with the
remote control switch.
Door locks other than the driver door do
not operate with the remote control
switches.
Only the driver door lock does not oper-
ate with the remote control switch. Door
switch circuit Malfunctioning item
Faulty door switch to
remote control entry control unit
harness Possible cause
Key-in detection switch circuit
Faulty key-in detection switch to remote control entry control
unit harness
Remote control entry control unit
Key-in detection switch circuit
Faulty remote control entry control unit
Faulty key-in detection switch to remote control entry control
unit harness
Remote control entry control unit
Central door lock system circuit
Remote control entry control unit
Driver door lock actuator circuit
Remote control entry control unit
Faulty remote control entry control unit
Refer to
"CENTRAL DOOR LOCK SYSTEM", EL-2. Faulty combination meter (meter control unit) to remote
control entry control unit harness
Faulty remote control entry control unit
Faulty driver door lock actuator Faulty driver door lock actuator to remote control entry
control unit harness
Faulty remote control entry control unit
mA before
Use lithium
checking ihe battery.
photo battery (CRI 620
Component Parts lnspection
BATERY CHECK
Specification: Approx. 2.5 - 3.OV
CAUTION:
Connect resistance
(300Q) so that the current is approx. 10
or equivalent) for
replacement.
REMOTE CONTROL ENTRY SYSTEM
ID Code Entry Procedure
Enter the identity (ID) code manually when:
remote controller or control unit is replaced.
an additional remote controller is activated.
To enter the ID code, follow the procedures below.
PROCEDURE
I Close all doors and lock driveis side door. I
Insert and remove the key from the ignition more than six times within 10 seconds.
(Power door lock will then unlock.)
Within
3 seconds after door lock is unlocked, turn ignition key switch to "ACCn posi-
tion and lock the driver's side door.
At this time, the original ID codes are erased.
Push any button on the new remote controller once. (Power door lock will then
unlock.)
At this time, the new ID code is entered. e
Lock driver's side door.
Do you
want to enter any additional remote controller ID codes?
A maximum four ID codes may be entered. Any attempt to enter more will be
ignored.
I Open driver's side door or turn the ignition key switch to 'OFF position. I
No
END.
After entering the identity (ID) code, check the operation of remote control
entry system.
Yes
NOTE
If you need to activate more than two additional new remote controllers, repeat the procedure
"Additional ID code entry" for each new remote controller.
If the same ID code that exists in the memory is input, the entry will be ignored.
Entry of maximum four ID codes is allowed and any attempt to enter more will be ignored.