TERMINALS OF ECU
1. TCM
HINT:
Each TCM terminal standard voltage is shown in the table below.
In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" 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 TCM terminals.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
B40-15 (R) - B40-8 (E1) |
G - B |
R shift position switch signal |
Ignition switch ON and shift lever in R |
11 to 14 V |
Ignition switch ON and shift lever in any position except R |
Below 1 V |
|||
B40-16 (D) - B40-8 (E1) |
LG - B |
D shift position switch signal |
Ignition switch ON and shift lever in D and S |
11 to 14 V |
Ignition switch ON and shift lever in any position except D and S |
Below 1 V |
|||
B40-12 (STP) - B40-8 (E1) |
P - B |
Stop light switch signal |
Brake pedal is depressed |
7.5 to 14 V |
Brake pedal is released |
Below 1.5 V |
|||
B40-11 (NSW) - B40-8 (E1) |
GR - B |
Park/neutral switch signal |
Ignition switch ON and shift lever in P or N |
Below 2 V |
Ignition switch ON and shift lever in any position except P or N |
11 to 14 V |
|||
B40-10 (STA) - B40-8 (E1) |
V - B |
Starter signal |
Cranking (shift lever in P or N, engine switch START) |
11 to 14 V |
Ignition switch ON and shift lever in any position except P or N |
Below 2 V |
|||
B40-3 (SPD) - B40-8 (E1) |
L - B |
Speed signal from combination meter |
Vehicle speed 20 km/h (12 mph) |
Pulse generation (see waveform 1) |
B40-1 (BATT) - B40-8 (E1) |
W-L - B |
Battery (for measuring battery voltage and for TCM memory) |
Always |
9 to 14 V |
B40-13 (IGSW) - B40-8 (E1) |
Y - B |
Ignition switch |
Ignition switch ON |
9 to 14 V |
B40-18 (+B) - B40-8 (E1) |
Y - B |
Power source of TCM |
Ignition switch ON |
9 to 14 V |
B40-6 (CAN+) - B40-8 (E1) |
R - B |
CAN communication line |
Ignition switch ON |
Pulse generation (see waveform 2) |
B40-7 (CAN-) - B40-8 (E1) |
W - B |
CAN communication line |
Ignition switch ON |
Pulse generation (see waveform 3) |
(a) Waveform 1
Terminal |
SPD - E1 |
Tool setting |
2 V/DIV., 20 ms./DIV. |
Vehicle condition |
Vehicle speed 20 km/h (12 mph) |
(b) Waveform 2
Terminal |
CAN+ - E1 |
Tool setting |
1 V/DIV., 10 ms./DIV. |
Vehicle condition |
Engine is stopped, ignition switch ON |
(c) Waveform 3
Terminal |
CAN- - E1 |
Tool setting |
1 V/DIV., 10 ms./DIV. |
Vehicle condition |
Engine is stopped, ignition switch ON |
2. ECM
HINT:
Each ECM terminal standard voltage is shown in the table below.
In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" 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 ECM terminals.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
A41-25 (S) - B39-81 (E1) |
BE - W |
S shift position switch signal |
Ignition switch ON and shift lever in S |
11 to 14 V |
Ignition switch ON and shift lever in any position except S |
Below 1 V |
|||
A41-38 (SFTU) - B39-81 (E1) |
R - W |
Up shift switch signal |
Ignition switch ON and shift lever in S |
11 to 14 V |
Ignition switch ON and shift lever in "+" (Up shift) |
Below 1 V |
|||
A41-27 (SFTD) - B39-81 (E1) |
LG - W |
Down shift switch signal |
Ignition switch ON and shift lever in S |
11 to 14 V |
Ignition switch ON and shift lever in "-" (Down shift) |
Below 1 V |
Washer Level Warning Switch
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT LEVEL WARNING SWITCH ASSEMBLY
HINT:
The following check should be performed with the windshield washer motor and
pump installed to the washer jar.
(a) Fill the washe ...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful because in ...
Power Back Door Warning System does not Operate
DESCRIPTION
When the power back door warning system does not operate, one of the following
may be malfunctioning: 1) power back door warning buzzer circuit, 2) wireless door
lock control system or 3) power back door ECU.
WIRING DIAGRAM
CAUTION / NOTIC ...