3UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS... https://one.tis.toyota.com/t3Portal/document/rm/RM00B0U/xhtml/RM0...
Last Modified: 4-29-2015 6.6 U Doc ID: RM000000SXP006X
Model Year: 2006 Model: LS430 Prod Date Range: [07/2005 - ]
Title: 3UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS OF ECM; 2006 MY LS430 [07/2005 - ]
TERMINALS OF ECM
HINT:
Each ECM terminal's standard voltage is shown in the table below. In the table, first follow the information
under "Condition". Look under "Symbols (Terminal No.)" for the terminals to be inspected. The standard
voltage between the terminals is shown under "Specified Condition".
Use the illustration above as a reference for the ECM terminals.
SYMBOLS WIRING TERMINAL DESCRIPTION CONDITION SPECIFIED
(TERMINAL NO.) COLOR CONDITION
Battery (for measuring battery
BATT (E3-4) - E1
B-R - BR voltage and for the ECM Always 9 to 14 V
(E6-7)
memory)
+BM (E5-5) -
Y-B - W-B Power source of throttle motor Always 9 to 14 V
ME01 (E5-4)
IGSW (E3-17) -
B-O - BR Ignition switch Ignition switch ON 9 to 14 V
E1 (E6-7)
+B (E3-6) - E1
B-W - BR Power source of ECM Ignition switch ON 9 to 14 V
(E6-7)
+B1 (E3-5) - E1
B-W - BR Power source of ECM Ignition switch ON 9 to 14 V
(E6-7)
VC (E5-29) - E2 Power source of sensor
L-R - BR Ignition switch ON 4.5 to 5.5 V
(E5-28) (specific voltage)
VTA (E5-23) - E2 Throttle position sensor Ignition switch ON, accelerator
Y - BR 0.5 to 1.1 V
(E5-28) (for engine control) pedal fully released
VTA1 (E5-23) - Throttle position sensor Ignition switch ON, accelerator
Y - BR 3.2 to 4.8 V
E2 (E5-28) (for engine control) pedal fully depressed
Throttle position sensor
VTA2 (E5-22) - Ignition switch ON, accelerator
L-B - BR (for sensor malfunction 2.1 to 3.1 V
E2 (E5-28) pedal fully released
detection)
Throttle position sensor
VTA2 (E5-22) - Ignition switch ON, accelerator
L-B - BR (for sensor malfunction 4.5 to 5.5 V
E2 (E5-28) pedal fully depressed
detection)
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3UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS... https://one.tis.toyota.com/t3Portal/document/rm/RM00B0U/xhtml/RM0...
1. WAVEFORM 1
Fuel injector
ITEM CONTENT
#1 (E5-15) - E01 (E4-2)
#2 (E4-17) - E01 (E4-2)
#3 (E5-14) - E01 (E4-2)
#4 (E4-16) - E01 (E4-2)
Symbols (Terminal No.)
#5 (E5-13) - E01 (E4-2)
#6 (E4-15) - E01 (E4-2)
#7 (E5-12) - E01 (E4-2)
#8 (E4-14) - E01 (E4-2)
Tool Setting 20 V/DIV., 20 msec./DIV.
Condition Idling
HINT:
The wavelength becomes shorter as engine rpm increases.
2. WAVEFORM 2
(a) Igniter IGT signal (from ECM to igniter)
(b) Igniter IGF signal (from igniter to ECM)
ITEM CONTENT
(a) IGT1 (E5-17) - E1 (E6-7)
(a) IGT2 (E4-13) - E1 (E6-7)
(a) IGT3 (E5-16) - E1 (E6-7)
(a) IGT4 (E4-12) - E1 (E6-7)
(a) IGT5 (E5-27) - E1 (E6-7)
Symbols (Terminal No.)
(a) IGT6 (E4-11) - E1 (E6-7)
(a) IGT7 (E5-26) - E1 (E6-7)
(a) IGT8 (E4-10) - E1 (E6-7)
(b) IGF1 (E4-7) - E1 (E6-7)
(b) IGF2 (E4-6) - E1 (E6-7)
Tool Setting 2 V/DIV., 20 msec./DIV.
Condition Idling
HINT:
The wavelength becomes shorter as engine rpm increases.
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3UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS... https://one.tis.toyota.com/t3Portal/document/rm/RM00B0U/xhtml/RM0...
3. WAVEFORM 3
(a) Camshaft position sensor
(b) Crankshaft position sensor
ITEM CONTENT
(a) G2 (E5-21) - G2- (E5-20)
Symbols (Terminal No.)
(b) NE+ (E5-32) - NE- (E5-31)
Tool Setting 5 V/DIV., 20 msec./DIV.
Condition Idle after engine warmed-up
HINT:
The wavelength becomes shorter as engine rpm increases.
4. WAVEFORM 4
Purge VSV
ITEM CONTENT
Symbols (Terminal No.) PRG (E5-11) - E01 (E4-2)
Tool Setting 5 V/DIV., 50 msec./DIV.
Condition Accelerated slowly after engine warmed-up
HINT:
In cases where the purge VSV can be used to purge the EVAP,
the waveform will not be displayed as shown in the illustration.
In the DATA LIST, the item EVAP PURGE VSV shows the duty
ratio of voltage flowing to the purge valve.
Duty ratio for purge VSV (%) = A/B x 100
5. WAVEFORM 5
Heated oxygen sensor (sensor 1)
ITEM CONTENT
Symbols (Terminal OX1A (E5-30) - O1A- (E5-25)
No.) OX2A (E4-28) - O2A- (E4-21)
Tool Setting 0.2 V/DIV., 200 msec./DIV.
Maintain engine speed at 2,500 rpm after
Condition
engine warmed up
HINT:
In the DATA LIST, the items heated oxygen sensor B1 S1 and
heated oxygen sensor B2 S1 show the ECM input values of the
heated oxygen sensor (sensor 1).
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6. WAVEFORM 6
Heated oxygen sensor (sensor 2)
ITEM CONTENT
Symbols (Terminal OX1B (E2-28) - O1B- (E2-29)
No.) OX2B (E2-17) - O2B- (E2-18)
Tool Setting 0.2 V/DIV., 200 msec./DIV.
Maintain engine speed at 2,500 rpm after
Condition
engine warmed up
HINT:
In the DATA LIST, the items heated oxygen sensor B1 S2 and
heated oxygen sensor B2 S2 show the ECM input values of the
heated oxygen sensor (sensor 2).
7. WAVEFORM 7
Knock sensor
ITEM CONTENT
Symbols (Terminal KNK1 (E6-28) - EKNK (E6-30)
No.) KNK2 (E6-29) - EKN2 (E6-31)
Tool Setting 1 V/DIV., 1 msec./DIV.
Maintain engine speed at 2,000 rpm after
Condition
engine warmed-up
HINT:
The wavelength becomes shorter as engine rpm increases.
The waveforms and amplitude displayed differ slightly depending
on the vehicle.
8. WAVEFORM 8
(a) VVT sensor bank 1
(b) VVT sensor bank 2
(c) Crankshaft position sensor
ITEM CONTENT
(a) VV1+ (E5-19) - VV1- (E5-18)
Symbols (Terminal No.) (b) VV2+ (E4-19) - VV2- (E4-18)
(c) NE+ (E5-32) - NE- (E5-31)
Tool Setting 2 V/DIV., 20 msec./DIV.
Condition Idle after engine warmed-up
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3UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS... https://one.tis.toyota.com/t3Portal/document/rm/RM00B0U/xhtml/RM0...
HINT:
The wavelength becomes shorter as engine rpm increases.
9. WAVEFORM 9
VVT OCV
ITEM CONTENT
OC1+ (E5-34) - OC1- (E5-33)
Symbols (Terminal No.)
OC2+ (E4-9) - OC2- (E4-8)
Tool Setting 5 V/DIV., 200 msec./DIV.
Condition Accelerated slowly after engine warmed-up
HINT:
In the DATA LIST, the items VVT OCV DUTY B1 and B2 show the
duty ratio of voltage flowing to the OCV (see the illustration).
VVT OCV DUTY B1, B2 (%) = A/B x 100
10. WAVEFORM 10
Engine speed signal
ITEM CONTENT
Symbols (Terminal No.) TACH (E2-16) - E1 (E6-7)
Tool Setting 5 V/DIV., 10 msec./DIV.
Condition Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.
11. WAVEFORM 11
Throttle actuator positive terminal
ITEM CONTENT
Symbols (Terminal No.) M+ (E5-2) - ME01 (E5-4)
Tool Setting 5 V/DIV., 1 msec./DIV.
Condition Idle after engine warmed-up
HINT:
The duty ratio varies depending on the throttle opening
operation.
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3UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS... https://one.tis.toyota.com/t3Portal/document/rm/RM00B0U/xhtml/RM0...
12. WAVEFORM 12
Throttle actuator negative terminal
ITEM CONTENT
Symbols (Terminal No.) M- (E5-1) - ME01 (E5-4)
Tool Setting 5 V/DIV., 1 msec./DIV.
Condition Idle after engine warmed-up
HINT:
The duty ratio varies depending on the throttle opening
operation.
13. WAVEFORM 13
Vehicle speed signal
ITEM CONTENT
Symbols (Terminal No.) SPD (E3-22) - E1 (E6-7)
Tool Setting 2 V/DIV., 20 msec./DIV.
Condition Driving at 20 km/h (12 mph)
HINT:
The wavelength becomes shorter as vehicle speed increases.
14. WAVEFORM 14
CAN communication signal
ITEM CONTENT
Symbols (Terminal No.) CANH (E3-25) - E1 (E6-7)
Tool Setting 1 V/DIV., 10 μsec./DIV.
Condition Stop engine and ignition switch ON
HINT:
The waveform varies depending on the CAN communication
signal.
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3UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS... https://one.tis.toyota.com/t3Portal/document/rm/RM00B0U/xhtml/RM0...
15. WAVEFORM 15
CAN communication signal
ITEM CONTENT
Symbols (Terminal No.) CANL (E3-24) - E1 (E6-7)
Tool Setting 1 V/DIV., 10 μsec./DIV.
Condition Stop engine and ignition switch ON
HINT:
The waveform varies depending on the CAN communication
signal.
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