Lexus IS250 IS220d GSE20 ALE20 - A960E AUTOMATIC TRANSMISSION


AUTOMATIC TRANSMISSION SYSTEM - TERMINALS OF ECM

ECM

Automatic Transmission System - Terminals Of Ecm. A960E AUTOMATIC TRANSMISSION. Lexus IS250 IS220d GSE20 ALE20

  • 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 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 ColorTerminal DescriptionConditionSpecified Condition
D (E4-9) - E1 (E4-7)BR - BRD shift position switch signalEngine switch on (IG) and shift lever D and S position10 to 14 V
↑↑↑Engine switch on (IG) and shift lever except D and S positionBelow 1 V
R (E4-8) - E1 (E4-7)V - BRR shift position switch signalEngine switch on (IG) and shift lever R position10 to 14 V
↑↑↑Engine switch on (IG) and shift lever except R positionBelow 1 V
STP (A6-4) - E1 (E4-7)R-B - BRStop light switch signalBrake pedal is depressed7.5 to 14 V
↑↑↑Brake pedal is releasedBelow 1.5 V
SFTD (A6-19) - E1 (E4-7)O - BRDown shift switch signalEngine switch on (IG) and shift lever S position10 to 14 V
↑↑↑Engine switch on (IG) and shift lever "-" position (Down shift)Below 1 V
SFTU (A6-30) - E1 (E4-7)Y - BRUp shift switch signalEngine switch on (IG) and shift lever S position10 to 14 V
↑↑↑Engine switch on (IG) and shift lever "+" position (Up shift)Below 1 V
S (A6-9) - E1 (E4-7)W-G - BRS shift position switch signalEngine switch on (IG) and shift lever S position10 to 14 V
↑↑↑Engine switch on (IG) and shift lever except S positionBelow 1 V
P (E4-6) - E1 (E4-7)B - BRPark position switch signalEngine switch on (IG) and shift lever P position10 to 14 V
↑↑↑Engine switch on (IG) and shift lever except P positionBelow 1 V
N (E4-32) - E1 (E4-7)P - BRNeutral position switch signalEngine switch on (IG) and shift lever N position10 to 14 V
↑↑↑Engine switch on (IG) and shift lever except N positionBelow 1 V
STAR (E4-4) - E1 (E4-7)L - BRPark neutral switch signalEngine switch on (IG) and shift lever P and N positionBelow 1 V
↑↑↑Engine switch on (IG) and shift lever except P and N position10 to 14 V
SLU+ (E4-13) - SLU- (E4-12)L - RSLU solenoid signal5th (lock-up) or 6th (lock-up) gearPulse generation
(See waveform 2)
SR (E4-2) - E1 (E4-7)V - BRSR solenoid signal1st, 2nd, 3rd or 4th gear10 to 14 V
↑↑↑5th or 6th gearBelow 1 V
S4 (E4-16) - E1 (E4-7)P - BRS4 solenoid signal5th or 6th gear10 to 14 V
↑↑↑1st, 2nd, 3rd or 4th gearBelow 1 V
S3 (E4-17) - E1 (E4-7)B - BRS3 solenoid signal1st, 2nd or 3rd gear10 to 14 V
↑↑↑4th, 5th or 6th gearBelow 1 V
S2 (E4-18) - E1 (E4-7)W - BRS2 solenoid signal1st, 2nd or 6th gear10 to 14 V
↑↑↑3rd, 4th or 5th gearBelow 1 V
S1 (E4-19) - E1 (E4-7)R - BRS1 solenoid signal1st gearBelow 1 V
↑↑↑Except 1st gear10 to 14 V
SL2+ (E4-11) - SL2- (E4-10)B - PSL2 solenoid signalEngine idle speedPulse generation
(See waveform 3)
SL1+ (E4-25) - SL1- (E4-24)BR - WSL1 solenoid signal5th or 6th gearPulse generation
(See waveform 4)
SP2+ (E4-23) - SP2- (E4-22)L - YSpeed sensor (SP2) signalVehicle speed 20 km/h (12 mph)Pulse generation
(See waveform 6)
NT+ (E4-21) - NT- (E4-20)L - GSpeed sensor (NT) signalEngine idle speedPulse generation
(See waveform 5)
SLT+ (E4-35) - SLT- (E4-34)V - BRSLT solenoid signalEngine idle speedPulse generation
(See waveform 1)
OIL (E4-27) - EOIL (E4-26)Y - GATF temperature sensor signalATF temperature: 115°C (239°F) or moreBelow 1.5 V
KD (A5-26) - E1 (E7-7)P-L - BRKick-down switch signalEngine switch on (IG) and Accelerator pedal is depressedBelow 1 V
↑↑↑Engine switch on (IG) and Accelerator pedal is released10 to 14 V
Automatic Transmission System - Terminals Of Ecm. A960E AUTOMATIC TRANSMISSION. Lexus IS250 IS220d GSE20 ALE20

Waveform 1

Reference:
TerminalSLT+ - SLT-
Tool setting5 V/DIV., 1 ms./DIV.
Vehicle conditionEngine idle speed
Automatic Transmission System - Terminals Of Ecm. A960E AUTOMATIC TRANSMISSION. Lexus IS250 IS220d GSE20 ALE20

Waveform 2

Reference:
TerminalSLU+ - SLU-
Tool setting5 V/DIV., 1 ms./DIV.
Vehicle condition5th (lock-up) or 6th (lock-up) gear
Automatic Transmission System - Terminals Of Ecm. A960E AUTOMATIC TRANSMISSION. Lexus IS250 IS220d GSE20 ALE20

Waveform 3

Reference:
TerminalSL2+ - SL2-
Tool setting5 V/DIV., 1 ms./DIV.
Vehicle conditionEngine idle speed
Automatic Transmission System - Terminals Of Ecm. A960E AUTOMATIC TRANSMISSION. Lexus IS250 IS220d GSE20 ALE20

Waveform 4

Reference:
TerminalSL1+ - SL1-
Tool setting5 V/DIV., 1 ms./DIV.
Vehicle condition5th or 6th gear
Automatic Transmission System - Terminals Of Ecm. A960E AUTOMATIC TRANSMISSION. Lexus IS250 IS220d GSE20 ALE20

Waveform 5

Reference:
TerminalNT+ - NT-
Tool setting1 V/DIV., 2 ms./DIV.
Vehicle conditionEngine idle speed (P or N position)
Automatic Transmission System - Terminals Of Ecm. A960E AUTOMATIC TRANSMISSION. Lexus IS250 IS220d GSE20 ALE20

Waveform 6

Reference:
TerminalSP2+ - SP2-
Tool setting2 V/DIV., 20 ms./DIV.
Vehicle conditionVehicle speed 20 km/h (12 mph)
Cowl Side J/B ECU (Multiplex network Body ECU)

Automatic Transmission System - Terminals Of Ecm. A960E AUTOMATIC TRANSMISSION. Lexus IS250 IS220d GSE20 ALE20

  • HINT:
  • Each ECU 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 inspected. The standard voltage between the terminals is shown under "Specific Condition".
  • Use the illustration above as a reference for the ECU terminals.
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
PWR (J75-18) - Body groundPPWR switch signalEngine switch on (IG) and Pattern select switch (PWR) ON0 to 1.5 V
↑↑↑Engine switch on (IG) and Pattern select switch (PWR) OFFPulse generation*1
SNOW (J75-17) - Body groundLSNOW switch signalEngine switch on (IG) and Press continuously pattern select switch (SNOW) ON0 to 1.5 V
↑↑↑Engine switch on (IG) and Release pattern select switch (SNOW) OFFPulse generation*1
  • HINT:
  • *1: Voltage is input intermittently as this is an intermittent circuit. (Voltage varies between a peak of 7.5 to 14 V and a low of 0 to1.5 V.)
LEXUS IS250, IS220d / GSE20 ALE20
A960E AUTOMATIC TRANSMISSION
Lexus IS250 IS220d GSE20 ALE20
AUTOMATIC TRANSMISSION SYSTEM