Page 101 of 1449
B-3
ABS
L.H. drive vehicles 198......................
R.H. drive vehicles 205......................
ACD
Vehicles without AYC
212....................
Vehicles without AYC
220....................
ACD AND AYC
L.H. drive vehicles 228......................
R.H. drive vehicles 238......................
SUPPLEMENTAL RESTRAINT SYSTEM
(SRS) AND SEAT BELT PRETENSIONER
L.H. drive vehicles 248......................
R.H. drive vehicles 250......................
IMMOBILIZER SYSTEM
L.H. drive vehicles 252......................
R.H. drive vehicles 254......................
INTERCOOLER WATER SPLAY 256........
SPARE CONNECTOR
(FOR FRONT FOG LAMP) 258............
Page 139 of 1449
SINGLE PART INSTALLATION POSITION -Relay/ECU
D
Intercooler water
spray relay
Fuel pump
relay 2
Rear fog
lamp relay
Fuel
pump relay 1
Power
window
relay
Defogger
relay
Blower relay
J/B
B-41
ECU
NameSymbolNameSymbol
4WD-ECU L.H. drive vehiclesLFront-ECUC
R.H. drive vehiclesKHeater control unit H
A/C-ECUHImmobilizer-ECUG
ABS-ECUL.H. drive vehiclesAPower window main switch
(incorporatingECU)
M
R.H. drive vehiclesB(incorporating ECU)
Column switch (incorporating column-ECU)FPower window motor
(incorporatingECU)
FrontN
ETACS-ECUE(incorporating ECU)RearO
Engine-ECUISRS-ECUJ
Fan controllerD
NOTE
*: also equipped at the right side.
ABC
D
EFGHI
JKL
MNO**
Page 140 of 1449
SINGLE PART INSTALLATION POSITION -ECU
A
ABS-ECU
B
ABS-ECU
C
Front-ECU
D
Fan controller
E
ETACS-
ECU
J/B
F
Column switch
column-ECU>
G
Ignition key cylinder
Immobilizer-
ECU
H
Heater control unit
A/C> or A/C-ECU
I
Engine-ECU
J
SRS-ECU
B-42
Page 350 of 1449
CIRCUIT DIAGRAMS
H1J15X26AA
B-252
IMMOBILIZER SYSTEM
L.H. drive vehicles
Page 352 of 1449
CIRCUIT DIAGRAMS
H1J15X25AA
B-254
IMMOBILIZER SYSTEM
R.H. drive vehicles
Page 541 of 1449

MPI -Troubleshooting13A-9
TROUBLESHOOTING
DIAGNOSIS TROUBLESHOOTING FLOW
Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Point.
NOTE
If the engine-ECU is replaced, the immobilizer-ECU and
ignition key should be replaced together with it.
DIAGNOSIS FUNCTION
ENGINE WARNING LAMP (CHECK ENGINE LAMP)
If an abnormality occurs in any of the following items related
to the MPI system, the engine warning lamp will illuminate
or flash. If the lamp remains illuminated or if the lamp
illuminates while the engine is running, check the diagnosis
code output.
However, the warning lamp will illuminate as bulb check for
5 seconds whenever the ignition switch is turned to the ON
position.
Engine warning lamp inspection items
Code No.Diagnosis item
-Engine-ECU
P0100Air flow sensor system
P0105Barometric pressure sensor system
P0110Intake air temprature sensor system
P0115Engine coolant temperature sensor system
P0120Throttle position sensor system
P0130Oxygen sensor (front) system
P0135Oxygen sensor heater (front) system
P0136Oxygen sensor (rear) system
P0141Oxygen sensor heater (rear) system
P0201No.1 injector system
P0202No.2 injector system
P0203No.3 injector system
P0204No.4 injector system
P0325Detonation sensor system
P0335Crank angle sensor system
P0340Camshaft position sensor system
P0403EGR control solenoid valve system
Engine warning lamp
(check engine lamp)
Page 544 of 1449

MPI -Troubleshooting13A-12
INSPECTION CHART FOR DIAGNOSIS CODES
Code No.Diagnosis itemReference page
P0100Air flow sensor system13A-13
P0105Barometric pressure sensor system13A-15
P0110Intake air temprature sensor system13A-16
P0115Engine coolant temperature sensor system13A-19
P0120Throttle position sensor system13A-21
P0130Oxygen sensor (front) system13A-24
P0135Oxygen sensor heater (front) system13A-26
P0136Oxygen sensor (rear) system13A-27
P0141Oxygen sensor heater (rear) system13A-29
P0201No.1 injector system13A-30
P0202No.2 injector system13A-31
P0203No.3 injector system13A-32
P0204No.4 injector system13A-33
P0325Detonation sensor system13A-34
P0335Crank angle sensor system13A-35
P0340Camshaft position sensor system13A-37
P0403EGR control solenoid valve system13A-39
P0443Purge control solenoid valve system13A-41
P0500Vehicle speed sensor system13A-43
P0505Idle speed control system13A-44
P0551Power steering fluid pressure switch system13A-46
P1104Waste gate solenoid valve system13A-47
P1105Fuel pressure control valve system13A-48
P1500Alternator FR terminal system13A-49
P1603Battery backup line malfunction13A-50
P1610Immobilizer system13A-51
Page 583 of 1449
MPI -Troubleshooting13A-51
Code No.P1610 Immobilizer system
General Export-spec. models>Probable cause
Inspection Range
DIgnition switch: ON
Set Conditions
DImproper communication between the engine-ECU and the immobilizer-ECUDOpen or short circuit, or loose connector contact
DMalfunction of the immobilizer-ECU
DMalfunction of the engine-ECU
NOTE
(1) If the registered ignition keys are close each other when starting the engine, radio interference may
cause this code to be displayed.
(2) This code may be displayed when registering the key encrypted code.
NG
Replace the engine-ECU.
Check the trouble symptoms.
NG
Replace the immobilizer-ECU
OK
Check the trouble symptoms.
OK
Check the harness wire between the
immobilizer-ECU and the
engine-ECU, and repair if necessary.NG
Replace
Check the following connectors:
C-202, C-130, C-118NG
Repair