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.
TERMINAL SPECIFICATION CHART
| Symbols (Terminal No.) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| L (E5-8) - E1 (E6-1) | LG - L | L shift position switch signal | Ignition switch ON and transfer shift lever on L | 10 to 14 V |
| L (E5-8) - E1 (E6-1) | LG - L | L shift position switch signal | Ignition switch ON and transfer shift lever not on L | Below 1 V |
| 2 (E5-9) - E1 (E6-1) | R - L | 2 shift position switch signal | Ignition switch ON and transfer shift lever on 2 and L | 10 to 14 V |
| 2 (E5-9) - E1 (E6-1) | R - L | 2 shift position switch signal | Ignition switch ON and transfer shift lever not on 2 and L | Below 1 V |
| R (E5-11) - E1 (E6-1) | P - L | R shift position switch signal | Ignition switch ON and transfer shift lever on R | 10 to 14 V |
| R (E5-11) - E1 (E6-1) | P - L | R shift position switch signal | Ignition switch ON and transfer shift lever not on R | Below 1 V |
| D (E5-10) - E1 (E6-1) | W - L | D shift position switch signal | Ignition switch ON and transfer shift lever on D or 3 | 10 to 14 V |
| D (E5-10) - E1 (E6-1) | W - L | D shift position switch signal | Ignition switch ON and transfer shift lever not on D or 3 | Below 1 V |
| 3 (E5-16) - E1 (E6-1) | G - L | 3 shift position switch signal | Ignition switch ON and transfer shift lever on 3 | 10 to 14 V |
| 3 (E5-16) - E1 (E6-1) | G - L | 3 shift position switch signal | Ignition switch ON and transfer shift lever not on 3 | Below 1 V |
| STP (E5-19) - E1 (E6-1) | L - L | Stop light switch signal Brake | pedal is depressed | Between 7.5 V and 14 V |
| STP (E5-19) - E1 (E6-1) | L - L | Stop light switch signal | Brake pedal is released | Below 1.5 V |
| SLT+ (E7-13) - SLT- (E7-12) | BR - GR | SLT solenoid signal | Engine idle speed | Pulse generation (see waveform 1) |
| SL2+ (E7-15) - SL2- (E7-14) | LG - V | SL2 solenoid signal | Engine idle speed | Pulse generation (see waveform 2) |
| SL2+ (E7-15) - SL2- (E7-14) | LG - V | SL2 solenoid signal | Ignition switch ON | Below 1 V |
| SL2+ (E7-15) - SL2- (E7-14) | LG - V | SL2 solenoid signal | 1st or 2nd gear | 10 to 14 V |
| SL2+ (E7-15) - SL2- (E7-14) | LG - V | SL2 solenoid signal | 3rd or O/D gear | Below 1 V |
| SL1+ (E7-19) - SL1- (E7 - 18) | B - P | SL1 solenoid signal | Engine idle speed | Pulse generation (see waveform 3) |
| SL1+ (E7-19) - SL1- (E7 - 18) | B - P | SL1 solenoid signal | Ignition switch ON | 10 to 14 V |
| SL1+ (E7-19) - SL1- (E7 - 18) | B - P | SL1 solenoid signal | 1st gear | 10 to 14 V |
| SL1+ (E7-19) - SL1- (E7 - 18) | B - P | SL1 solenoid signal | Not on 1st gear | Below 1 V |
| S4 (E7-11) - E1 (E6-1) | V - L | S4 solenoid signal | Ignition switch ON | Below 1 V |
| S4 (E7-11) - E1 (E6-1) | V - L | S4 solenoid signal | O/D gear | 10 to 14 V |
| S4 (E7-11) - E1 (E6-1) | V - L | S4 solenoid signal | Not on O/D gear | Below 1 V |
| DSL (E7-9) - E1 (E6-1) | Y - L | DSL solenoid signal | Vehicle speed 65 km/h (40 mph), lock up (ON to OFF) | Below 1 V |
| DSL (E7-9) - E1 (E6-1) | Y - L | DSL solenoid signal | Vehicle driving under lockup position | Pulse generation (see waveform 4) |
| THO1 (E7-32) - E2 (E8-28) | G - R | ATF temperature sensor signal | ATF temperature: 115°C (239°F) or more | Below 1.5 V |
| NT+ (E7-27) - NT- (E7-35) | L - LG | Speed sensor (NT) signal | Vehicle speed 20 km/h (12 mph) | Pulse generation (see waveform 5) |
| NSW (E8-16) - E1 (E6-1) | Y - L | PNP switch signal | Ignition switch ON and shift lever on P or N | Below 2 V |
| NSW (E8-16) - E1 (E6-1) | Y - L | PNP switch signal | Ignition switch ON and shift lever not on P or N | 10 to 14 V |
| NC+ (E7-26) - NC- (E7-34) | R - G | Speed sensor (NC) signal | Vehicle speed 30 km/h (19 mph): (3rd gear) Engine speed 1,400 RPM | Pulse generation (see waveform 6) |
- Waveform 1 (Reference) Waveform 1 (Reference)
Item Content Symbols (Terminal No.) SLT+ (E7-13) - SLT- (E7-12) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine idle speed - Waveform 2 (Reference) WAVEFORM 2 (REFERENCE)
Item Content Symbols (Terminal No.) SL2+ (E7-15) - SL2- (E7-14) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine idle speed - Waveform 3 (Reference) WAVEFORM 3 (REFERENCE)
Item Content Symbols (Terminal No.) SL1+ (E7-19) - SL1- (E7-18) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine idle speed - Waveform 4 (Reference) WAVEFORM 4 (REFERENCE)
Item Content Symbols (Terminal No.) DSL (E7-9) - E1 (E6-1) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Vehicle speed 65 km/h (40 mph), lockup (ON to OFF) - Waveform 5 (Reference) WAVEFORM 5 (REFERENCE)
Item Content Symbols (Terminal No.) NT+ (E7-27) - NT- (E7-35) Tool Setting 5 V/DIV., 0.5 msec./DIV. Condition Vehicle speed 20 km/h (12 mph) - Waveform 6 (Reference) WAVEFORM 6 (REFERENCE)
Item Content Symbols (Terminal No.) NC+ (E7-26) - NC- (E7-34) Tool Setting 1 V/DIV., 1 msec./DIV. Condition Vehicle speed 30 km/h (19 mph): (3rd gear)
Engine speed 1,400 RPM