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DI-977
DIAGNOSTICS - AUTOMATIC TRANSMISSION (A750E for 1GR-FE)
DIDV1-01
TERMINALS OF ECM
1. ECM
E7 E6 E5 E4 E3
D14145
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 termi-
nals to be inspected. The standard voltage between the terminals is shown under "Specific Condition".
Use the illustration above as a reference for the ECM terminals.
Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
L shift position switch sig-
LMS (E4-9) - E1 (E5-1) V-W - BR IG switch ON 10 to 14 V
nal
IG switch ON and Press continu-
Below 1 V
ously shift position L switch
2 shift position switch sig- IG switch ON and shift lever 2 and L
2 (E4-10) - E1 (E5-1) P-L - BR 10 to 14 V
nal position
IG switch ON and shift lever except
Below 1 V
2 and L position
R shift position switch sig- IG switch ON and shift lever R posi-
R (E4-11) - E1 (E5-1) G-R - BR 10 to 14 V
nal tion
IG switch ON and shift lever except
Below 1 V
R position
D shift position switch sig- IG switch ON and shift lever D posi-
D (E4-21) - E1 (E5-1) W-R - BR 10 to 14 V
nal tion
IG switch ON and shift lever except
Below 1 V
D position
3 shift position switch sig- IG switch ON and shift lever 3 posi-
3 (E4-19) - E1 (E5-1) G-W - BR 10 to 14 V
nal tion
IG switch ON and shift lever except
Below 1 V
3 position
ODMS (E3-12) - E1 (E5-1) R - BR O/D main switch signal IG switch ON 10 to 14 V
IG switch ON and press continu-
Below 1 V
ously O/D main switch
STP (E3-15) - E1 (E5-1) G-W - BR Stop lamp switch signal Brake pedal is depressed 7.5 to 14 V
Brake pedal is released Below 1.5 V
Pulse generation
SLU+ (E6-15) - SLU- (E6-14) G - L-B SLU solenoid signal 5th (lock-up) gear
(See waveform 2)
S2 (E6-10) - E1 (E5-1) W-L - BR S2 solenoid signal 2nd or 3rd gear 10 to 14 V
1st, 4th or 5th gear Below 1 V
S1 (E6-11) - E1 (E5-1) P-L - BR S1 solenoid signal 1st or 2nd gear 10 to 14 V
3rd, 4th or 5th gear Below 1 V
DI-978
DIAGNOSTICS - AUTOMATIC TRANSMISSION (A750E for 1GR-FE)
Pulse generation
SLT+ (E6-13) - SLT- (E6-12) B-R - G-W SLT solenoid signal Engine idle speed
(See waveform 1)
SR (E6-9) - E1 (E5-1) W-G - BR SR solenoid signal 5th gear 10 to 14 V
1st gear Below 1 V
Pulse generation
SL2+ (E6-17) - SL2- (E6-16) B-W SL2 solenoid signal Engine idle speed
(See waveform 3)
Pulse generation
SL1+ (E6-19) - SL1- (E6-18) R-W - GR SL1 solenoid signal Engine idle speed
(See waveform 4)
No.1 ATF temperature No.1 ATF temperature: 115 _C (239
THO1 (E6-24) - E2 (E7-28) R-L - B-W Below 1.5 V
sensor signal _F) or more
No.2 ATF temperature No.2 ATF temperature: 115 _C (239
THO2 (E6-32) - E2 (E7-28) V - B-W Below 1.5 V
sensor signal _F) or more
Speed sensor (SP2) sig- Pulse generation
SP2+ (E6-34) - SP2- (E6-26) Y-R - W-R Vehicle speed 20 km/h (12 mph)
nal (See waveform 6)
Pulse generation
NT+ (E6-35) - NT- (E6-27) G-R Speed sensor (NT) signal Engine idle speed
(See waveform 5)
IG switch ON and shift lever P and
STAR/NSW (E6-8) - E1 (E5-1) L-R - BR Park neutral switch signal Below 2 V
N position
IG switch ON and shift lever except
10 to 14 V
P and N position
Waveform 1
5 V/DIV
Reference:
Terminal SLT+ - SLT-
Tool setting 5V/DIV, 1ms/DIV
Vehicle condition Engine idle speed
GND
1 ms/DIV
D14146
Waveform 2
5 V/DIV
Reference:
Terminal SLU+ - SLU-
Tool setting 5V/DIV, 1ms/DIV
Vehicle condition 5th (lock-up) or 6th (lock-up) gear
GND
1 ms/DIV
D14146
DI-979
DIAGNOSTICS - AUTOMATIC TRANSMISSION (A750E for 1GR-FE)
Waveform 3
5 V/DIV
Reference:
Terminal SL2+ - SL2-
Tool setting 5V/DIV, 1ms/DIV
Vehicle condition Engine idle speed
GND
1 ms/DIV
D14146
Waveform 4
5 V/DIV Reference:
Terminal SL1+ - SL1-
Tool setting 5V/DIV, 1ms/DIV
Vehicle condition Engine idle speed
GND
1 ms/DIV
D14146
Waveform 5
1 V/DIV Reference:
Terminal NT+ - NT-
Tool setting 1V/DIV, 2ms/DIV
GND Vehicle condition Engine idle speed (P or N position)
2 ms/DIV
D14148
Waveform 6
2 V/DIV Reference:
Terminal SP2+ - SP2-
Tool setting 2V/DIV, 20ms/DIV
GND Vehicle condition Vehicle speed 20 km/h (12 mph)
20 ms/DIV
C13480 D14149
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