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ES–6 2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
SYSTEM DIAGRAM1. SYSTEM DIAGRAM
M
M
Injector
EFI Relay
Starter Relay
Starter
Ignition Switch
Park/Neutral Switch
Stop Light Switch
Stop Light
Air Injection Control Driver
BATT
Ignition Switch
Injector
Injector
Injector
Ignition Switch
C/OPN Relay
+BM
AIDI
AIRV
AIRPSTP
ST1-
IGSW
NSW
STA
MREL
+B
BATT
#40
#30
#20
#10
FC
ECM
A B C
Fuel Pump
A121730E01
2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–7
S
ECrankshaft Position Sensor
Camshaft Position Sensor
Input Speed Sensor
Output Speed Sensor
Mass Air Flow Meter
Battery
Purge VSV
Combination Meter
A/C Amplifier
VG
E2G
SP2+
PRG
SP2-
NCO+
NCO-
NE-
G2+
NE+
THWO
ACT
AC1
Heated Oxygen sensor
OX1B
HT1B
A B
C
C
A121731E01
ES–8 2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
#1
#2
#3
#4
Ignition Coil with Igniter
Cruise Indicator
MILIgnition Switch
A/F Heater Relay
BATT
Air-fuel Ratio Sensor
Throttle Position Sensor
Engine Coolant Temperature Sensor
Intake Air Temperature Sensor
No.1 A/T Oil Temperature Sensor
No.2 A/T Oil Temperature Sensor
Pressure Sensor
Accelerator Pedal Position Sensor
IGF1
IGT4
EPAVPAVCPAEPA2
VPA2VCP2
IGT3
IGT2
IGT1
AIP
PI
W
E2
THO1
THOC
THA
A1A-A1A+HA1A
THW
VTA2VTA1
VC
C
VC
A121732E01
2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–9
S
EGenerator
Combination Meter (Tacho)
Cruise Control Switch
Knock Sensor
EKNK
KNK1
ALT
TACH
CCS
Inverter Relay
Tail Light Relay
Combination Meter
Airbag ECU
PS Pressure Switch
4WD Control Switch
4WD Indicator
Canister Pressure Sensor
Leak Detection Pump
Vent Valve
Canister Pump Module
4WD
VPMP
MPMP
PSW
PPMP
F/PS
SPD
ELS1
ELS2
Transponder Key ECU
IMO
IMI
D
A121733E01
ES–10 2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
M
Shift Position Switch (Park/Neutral Position Switch)
+B
Ignition Switch
Clutch Start Switch (for M/T)
DLC3TACH
VSC ECU
Bus
Throttle Actuator
Shift Solenoid Valve S2
Shift Solenoid Valve S1
Shift Solenoid Valve SLT
Shift Solenoid Valve SLU
Oil Control ValveOC1+
OC1-
SLU+
SLU-
SLT+
SLT-
S1
S2
M+
CANHCANL
TC
M-
GE01
ME01
E02
E01
E04
E03
EC
E1
L
2
3
R
D
E0M
D
A121734E01
2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–11
S
E2. COMMUNICATION WITH OTHER COMPUTERS
HINT:Refer to CAN COMMUNICATION SYSTEM (See page CA-4).
3. COMMUNICATION SIGNALS
HINT:Refer to CAN COMMUNICATION SYSTEM (See page CA-4).
ECM
DLC3
Yaw Rate Sensor Steering Sensor
Skid Control ECU
CAN Communication Line
G037114E01
Transmitter Receiver Signal Communication Line
ECM Skid Control ECU
• Intake air temperature signal• Check mode signal• Engine rpm signal• Throttle position signal• Cruise control operation
signal• VSC prohibition requirement
signal• Shift position signal• Destination signal• Engine system malfunction
signal• Ignition timing signal
CAN
Skid Control ECU ECM
• VSC/TRC operation signal• VSC/TRC system
malfunction signal• Fuel cut requirement signal• Cruise control cancel
requirement signal• Torque requirement signal
CAN
ES–12 2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HOW TO PROCEED WITH TROUBLESHOOTING*: Use the intelligent tester.
NEXT
NEXT
HINT:If the display indicates a communication fault in the tester, inspect the DLC3.
NEXT
HINT:Record or print DTCs (See page ES-40) and freeze frame data (See page ES-41), if necessary.
NEXT
HINT:Refer to DTC Check / Clear (See page ES-40).
NEXT
NEXT
HINT:Refer to Check Mode Procedure (See page ES-43).
NEXT
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS
3 CONNECT INTELLIGENT TESTER TO DLC3*
4 CHECK DTC AND FREEZE FRAME DATA*
5 CLEAR DTC AND FREEZE FRAME DATA*
6 CONDUCT VISUAL INSPECTION
7 SET CHECK MODE DIAGNOSIS*
2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–13
S
EHINT:If the engine does not start, perform steps 10 and 12 first.
B
A
NEXT
HINT:Refer to DTC Check / Clear (See page ES-40).
B
A
HINT:Refer to Diagnostic Trouble Code Chart (See page ES-54).
NEXT
HINT:Refer to Basic Inspection (See page ES-14).
B
8 CONFIRM PROBLEM SYMPTOMS
Result Proceed To
Malfunction does not occur A
Malfunction occurs B
GO TO STEP 10
9 SIMULATE SYMPTOMS
10 CHECK DTC*
Result Proceed To
Malfunction code A
No code B
GO TO STEP 12
11 REFER TO DTC CHART
GO TO STEP 14
12 CONDUCT BASIC INSPECTION
Result Proceed To
Malfunctioning parts not confirmed A
Malfunctioning parts confirmed B
GO TO STEP 17
ES–14 2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
A
HINT:Refer to Problem Symptoms Table (See page ES-29).
B
A
HINT:Refer to ECM Power Source Circuit (See page ES-425).
NEXT
B
A
HINT:Refer to Check for Intermittent Problems (See page ES-14).
NEXT
NEXT
13 REFER TO PROBLEM SYMPTOMS TABLE
Result Proceed To
Malfunctioning circuit confirmed A
Malfunctioning parts confirmed B
GO TO STEP 17
14 CHECK ECM POWER SOURCE CIRCUIT
15 CONDUCT CIRCUIT INSPECTION
Result Proceed To
Malfunction not confirmed A
Malfunction confirmed B
GO TO STEP 18
16 CHECK FOR INTERMITTENT PROBLEMS
GO TO STEP 18
17 CONDUCT PARTS INSPECTION
2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–15
S
ENEXT
NEXT
NEXT
18 IDENTIFY PROBLEM
19 ADJUST AND/OR REPAIR
20 CONDUCT CONFIRMATION TEST
END
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