Page 3353 of 4770
I03114
ECM
E9 24
105
E9
E9 3
4G±W
R±L
L±Y Transponder Key Amplifier
CODE
RXCK
TXCT 1MZ±FE engine:
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±933
1168 Author: Date:
Page 3354 of 4770
I02681
Noise
DI±934
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1169 Author: Date:
INSPECTION PROCEDURE
1 Noise check
PREPARATION:
Insert already registered master key in the key cylinder.
CHECK:
Using an oscilloscope or TOYOTA hand±held tester, check that
noise is included in the CODE terminal of ECM.
OK:
No noise is detected.
NG Try to find the cause of the noise and remove it.
OK
2 Does it operate normally after replacement of transponder key amplifier?
Yes Replace transponder key amplifier.
No
Replace ECM.
Page 3355 of 4770
I08435
ECM
E10 28
93
E10
E10 3
4G±W
R±L
L±Y Transponder Key Amplifier
CODE
RXCK
TXCT 5S±FE engine:
G±W
R±L
L±Y 1
II4
4
II4
2
II4
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±935
1170 Author: Date:
DTC B2798/99 Communication malfunction No.2
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
B2798/99Communication error
Key
Transponder Key Coil
Transponder Key Amplifier
Wireharness
ECM
WIRING DIAGRAM
DI4FH±01
Page 3356 of 4770
I03114
ECM
E9 24
105
E9
E9 3
4G±W
R±L
L±Y Transponder Key Amplifier
CODE
RXCK
TXCT 1MZ±FE engine: DI±936
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1171 Author: Date:
Page 3357 of 4770
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±937
1172 Author: Date:
INSPECTION PROCEDURE
1 Check transponder key coil (See page BE±128).
NG Replace transponder key coil
OK
2 Check harness and connector between transponder key amplifier and ECM.
NG Repair or replace harness and connector
OK
3 Does it operate normally after replacement of transponder key amplifier?
Yes Replace transponder key amplifier.
No
Replace ECM.
Page 3358 of 4770
EC039±05
± EMISSION CONTROL (5S±FE)EMISSION CONTROL SYSTEM
EC±1
1399 Author: Date:
EMISSION CONTROL SYSTEM
PURPOSE
The emission control systems are installed to reduce the amount of HC, CO and NOx exhausted from the
engine ((3), (4) and (5)), to prevent the atmospheric release of blow±by gas±containing HC (1) and evapo-
rated fuel containing HC being released from the fuel tank (2).
The function of each system is shown in the following table.
SystemAbbreviationFunction
(1) Positive Crankcase Ventilation
(2) Evaporative Emission Control
(3) Exhaust Gas Recirculation
(4) Three±Way Catalytic Converter
(5) Sequential Multiport Fuel Injection*PCV
EVAP
EGR
TWC
SFIReduces HC
Reduces evaporated HC
Reduces NOx
Reduces HC, CO and NOx
Injects a precisely timed, optimum amount of fuel for reduced
exhaust emissions
Remark: * For inspection and repair of the SFI system, refer to the SFI section in this manual.
Page 3359 of 4770
EC03A±03
B06542
PCV Valve
VSV for EGR
Front TWC
(California)EGR Vacuum Modulator
EGR Valve
TWC (Except California)
Rear TWC (California)
VSV for EVAP
Vent Line
Charcoal Canister
Fuel Tank
EVAP Line
Air Drain Hose
Filler Pipe
Air Inlet LinePurge Line Cutoff Valve
Fill Check Valve
EVAP Service Port
Fuel Tank Cap
VSV for Vapor
Pressure Sensor Vapor Pressure Sensor
EC±2
± EMISSION CONTROL (5S±FE)PARTS LAYOUT AND SCHEMATIC DRAWING
1400 Author: Date:
PARTS LAYOUT AND SCHEMATIC DRAWING
LOCATION
Page 3360 of 4770
EC03B±03
B06549
VSV for EGR Front TWC
(California)EGR Vacuum Modulator
EGR
Valve
TWC (Except California)
Rear TWC (California)VSV
for EVAP
Vent Line
Charcoal CanisterFuel Tank EVAP Line
Air Drain HoseFiller Pipe
Air Inlet Line Purge LineEVAP Service Port
Fuel Tank Cap
Vapor
Pressure
SensorVSV for Vapor
Pressure Sensor
± EMISSION CONTROL (5S±FE)PARTS LAYOUT AND SCHEMATIC DRAWING
EC±3
1401 Author: Date:
DRAWING