Automatic Transmission System -- Terminals Of Ecu |
- 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 be inspected. The standard voltage between the terminals is shown under "Specified Condition".
- Use the illustration below as a reference for the ECU terminals.
| TCM |
| Symbols (Terminal No.) | Wiring Color | Terminal Description | Condition | Specified Condition |
| NSW (T19-12) - E1 (T19-1) | L-Y - BR | Park/neutral position switch signal | Ignition switch ON and shift lever on P or N | Below 1 V |
| NSW (T19-12) - E1 (T19-1) | L-Y - BR | Park/neutral position switch signal | Ignition switch ON and shift lever not on P or N | 11 to 14 V |
| STA (T19-11) - E1 (T19-1) | B-Y - BR | Starter signal | Cranking | 6 V or more |
| R (T38-9) - E1 (T19-1) | R-Y - BR | R shift position switch signal | Ignition switch ON and shift lever on R | 11 to 14 V |
| R (T38-9) - E1 (T19-1) | R-Y - BR | R shift position switch signal | Ignition switch ON and shift lever not on R | Below 1 V |
| D (T38-8) - E1 (T19-1) | G-Y - BR | D shift position switch signal | Ignition switch ON and shift lever on D or 3 | 11 to 14 V |
| D (T38-8) - E1 (T19-1) | G-Y - BR | D shift position switch signal | Ignition switch ON and shift lever not on D or 3 | Below 1 V |
| 3 (T38-12) - E1 (T19-1) | G-O - BR | 3 shift position switch signal | Ignition switch ON and shift lever on 3 | 11 to 14 V |
| 3 (T38-12) - E1 (T19-1) | G-O - BR | 3 shift position switch signal | Ignition switch ON and shift lever not on 3 | Below 1 V |
| 2 (T38-11) - E1 (T19-1) | L - BR | 2 shift position switch signal | Ignition switch ON and shift lever on 2 | 11 to 14 V |
| 2 (T38-11) - E1 (T19-1) | L - BR | 2 shift position switch signal | Ignition switch ON and shift lever not on 2 | Below 1 V |
| L (T38-10) - E1 (T19-1) | G-R - BR | L shift position switch signal | Ignition switch ON and shift lever on L | 11 to 14 V |
| L (T38-10) - E1 (T19-1) | G-R - BR | L shift position switch signal | Ignition switch ON and shift lever not on L | Below 1 V |
| S1 (T19-18) - E1 (T19-1) | GR - BR | S1 solenoid signal | 1st or 2nd gear | 11 to 14 V |
| S1 (T19-18) - E1 (T19-1) | GR - BR | S1 solenoid signal | 3rd gear or O/D | Below 1 V |
| S2 (T19-17) - E1 (T19-1) | W-L - BR | S2 solenoid signal | 2nd or 3rd gear | 11 to 14 V |
| S2 (T19-17) - E1 (T19-1) | W-L - BR | S2 solenoid signal | 1st gear or O/D | Below 1 V |
| SL (T19-16) - E1 (T19-1) | G - BR | SL solenoid signal | Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) | Pulse generation (see waveform 1) |
| SL (T19-16) - E1 (T19-1) | G - BR | SL solenoid signal | Vehicle driving under lock-up condition | 11 to 14 V |
| SLT+ (T19-20) - SLT- (T19-19) | G-Y - L-B | SLT solenoid signal | Engine is idling | Pulse generation (see waveform 2) |
| THOC (T19-24) - E2 (T19-23) | BR - B-Y | ATF temperature sensor signal | ATF temperature: 115°C (239°F) or more | Below 1.5 V |
| STP (T37-14) - E1 (T19-1) | G-W - BR | Stop light switch signal | Brake pedal is depressed | 11 to 14 V |
| STP (T37-14) - E1 (T19-1) | G-W - BR | Stop light switch signal | Brake pedal is released | Below 1 V |
| SPD1 (T37-25) - E1 (T19-1) | V-R - BR | Speed signal | Vehicle speed 20 km/h (12 mph) | Pulse generation (see waveform 3) |
| NCO+ (T19-3) - NCO- (T19-2) | V - P | Speed sensor (NCO) signal | Engine is idling | Pulse generation (see waveform 4) |
| SP2+ (T19-30) - SP2- (T19-29) | R - G | Speed sensor (SP2) signal | Vehicle speed 20 km/h (12 mph) | Pulse generation (see waveform 5) |
| IG2 (T37-6) - E1 (T19-1) | B-O - BR | Ignition switch | Ignition switch ON | 11 to 14 V |
| L4 (T38-15) - E1 (T19-1) | G-W - BR | L4 transfer switch signal | Ignition switch ON and transfer shift lever on L4 | Below 1 V |
| L4 (T38-15) - E1 (T19-1) | G-W - BR | L4 transfer switch signal | Ignition switch ON and transfer shift lever not on L4 | 11 to 14 V |
| TFN (T38-16) - E1 (T19-1) | W-G - BR | N transfer switch signal | Ignition switch ON and transfer shift lever on N | Below 1 V |
| TFN (T38-16) - E1 (T19-1) | W-G - BR | N transfer switch signal | Ignition switch ON and transfer shift lever not on N | 11 to 14 V |
| CAN+ (T37-21) - E1 (T19-1) | V - BR | CAN communication line | Ignition switch ON | Pulse generation (see waveform 6) |
| CAN- (T37-20) - E1 (T19-1) | P - BR | CAN communication line | Ignition switch ON | Pulse generation (see waveform 7) |
Waveform 1 (Reference)
Item Content Symbols (Terminal No.) SL (T19-16) - E1 (T19-1) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) Waveform 2 (Reference)
Item Content Symbols (Terminal No.) SLT+ (T19-20) - SLT- (T19-19) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine is idling Waveform 3 (Reference)
Item Content Symbols (Terminal No.) SPD1 (T37-25) - E1 (T19-1) Tool Setting 5 V/DIV., 20 msec./DIV. Condition Vehicle speed 20 km/h (12 mph) Waveform 4 (Reference)
Item Content Symbols (Terminal No.) NCO+ (T19-3) - NCO- (T19-2) Tool Setting 5 V/DIV., 0.5 msec./DIV. Condition Engine is idling Waveform 5 (Reference)
Item Content Symbols (Terminal No.) SP2+ (T19-30) - SP2- (T19-29) Tool Setting 2 V/DIV., 2 msec./DIV. Condition Vehicle speed 20 km/h (12 mph) Waveform 6 (Reference)
Item Content Symbols (Terminal No.) CAN+ (T37-21) - E1 (T19-1) Tool Setting 1 V/DIV., 10 msec./DIV. Condition Ignition switch ON Waveform 7 (Reference)
Item Content Symbols (Terminal No.) CAN- (T37-20) - E1 (T19-1) Tool Setting 1 V/DIV., 10 msec./DIV. Condition Ignition switch ON
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