CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM > TERMINALS OF ECM

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ECM

C105085E09

HINT:
Each ECM terminal's standard voltage and resistance 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 and resistance between the terminals is shown under "Specific Condition".
Use the illustration above as a reference for the ECM terminals.


Terminals No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
A18-1 (+B2) - B8-105 (E1)
L - BR
Power supply for IG
Ignition switch ON
11 to 14 V
A18-2 (+B) - B8-105 (E1)
W - BR
Power supply for IG
Ignition switch ON
11 to 14 V
A18-3 (+BM) - B8-105 (E1)
R-W - BR
Power supply for back-up memory
Always
11 to 14 V
A18-8 (CANH) - B8-105 (E1)
L - BR
CAN communication signal
Ignition switch ON
Pulse generation
(See waveform 1)
A18-9 (CANL) - B8-105 (E1)
W - BR
CAN communication signal
Ignition switch ON
Pulse generation
(See waveform 2)
A18-20 (BATT) - B8-105 (E1)
B - BR
Battery
Always
11 to 14 V
A18-25 (NSW) - B8-105 (E1)
GR - BR
Park/Neutral position switch signal
Ignition switch ON and shift lever P or N position
Below 1 V
Ignition switch ON and shift lever other than P and N position
11 to 14 V
A18-26 (SDSW) - B8-105 (E1)
L-B - BR
Shift lever position switch signal
Ignition switch ON and shift lever S or B position
11 to 14 V
Ignition switch ON and shift lever other than S and B position
Below 1 V
A18-36 (STP) - B8-105 (E1)
Y - BR
Stop light switch signal
Brake pedal depressed
7.5 to 14 V
Brake pedal released
Below 1.5 V
A18-44 (MREL) - B8-105 (E1)
L-Y - BR
Main relay (EFI/ECO) drive signal
Ignition switch ON
11 to 14 V
A18-48 (STA) - B8-105 (E1)
W-R - BR
Starter relay drive signal input
Cranking
6 V or more
B8-39 (B) - B8-105 (E1)
LG-B - BR
B shift position switch signal
Ignition switch ON and shift lever B position
11 to 14 V
Ignition switch ON and shift lever other than B position
Below 1 V
B8-54 (SLS+) - B8-53 (SLS-)
V - W-L
Belt clamping pressure liner solenoid (SLS) signal
Engine idling speed
Pulse generation
(See waveform 3)
B8-55 (DS2) - B8-105 (E1)
P-G - BR
Shift control solenoid valve (DS2) signal
Accelerator pedal further depressed after driving at a constant vehicle speed with shift lever in D
Pulse generation
(See waveform 4)
B8-56 (DS1) - B8-105 (E1)
R-L - BR
Shift control solenoid valve (DS1) signal
Accelerator pedal released while driving with shift lever in D
Pulse generation
(See waveform 5)
B8-58 (SL) - B8-105 (E1)
P-B - BR
Lock-up solenoid (SL) signal
Shift lever in N → except D
11 to 14 V → 0 to 1.5V
B8-59 (DSU) - B8-105 (E1)
GR-R - BR
Lock-up engagement solenoid (DSU) signal
Lock-up turned from OFF to ON
Pulse generation
(See waveform 6)
B8-64 (D) - B8-105 (E1)
G-W - BR
D shift position switch signal
Ignition switch ON and shift lever D position
11 to 14 V
Ignition switch ON and shift lever other than D position
Below 1 V
B8-70 (THO1) - B8-71 (ETHO)
G-Y - B-W
CVT fluid temperature sensor signal
CVT fluid temperature: 60 to 120°C
(140 to 320°F)
0.2 to 1.0 V
B8-73 (PTO) - B8-72 (EPTO)
L-B - W-R
Secondary pulley pressure sensor signal
Engine idling speed and shift lever P position
0.8 to 1.2
B8-74 (VCPT) - B8-72 (EPTO)
V-W - W-R
Power supply for secondary pulley pressure sensor signal
Ignition switch ON and engine stopped
4.5 to 5.5 V
B8-75 (N) - B8-105 (E1)
L - BR
N shift position switch signal
Ignition switch ON and shift lever N position
11 to 14 V
Ignition switch ON and shift lever other than N position
Below 1 V
B8-76 (R) - B8-105 (E1)
R - BR
R shift position switch signal
Ignition switch ON and shift lever R position
11 to 14 V
Ignition switch ON and shift lever other than R position
Below 1 V
B8-77 (P) - B8-105 (E1)
L-R - BR
P shift position switch signal
Ignition switch ON and shift lever P position
11 to 14 V
Ignition switch ON and shift lever other than P position
Below 1 V
B8-99 (NIN+) - B8-100 (NIN-)
L - LG
Transmission revolution sensor (NIN) signal
When driving with shift lever in D, vehicle speed approx. 6 km/h (3.7 mph) and engine speed approx. 700 rpm
Pulse generation
(See waveform 7)
B8-102 (NOTO) - B8-101 (NOTB)
L - W
Transmission revolution sensor (NOUT) signal
When driving with shift lever in D, vehicle speed approx. 12 km/h (7.5 mph) and engine speed approx. 1150 rpm
Pulse generation
(See waveform 8)
B8-105 (E1) - Body ground
BR - Body ground
Ground
Always
Below 1 Ω
B8-124 (NTO) - B8-123 (NTB)
V - P
Transmission revolution sensor (NT) signal
When driving with shift lever in D, vehicle speed approx. 12 km/h (7.5 mph) and engine speed approx. 1150 rpm
Pulse generation
(See waveform 9)


    C193943E01

  1. Waveform 1 (Reference)
    Terminal
    		CANH - E1
    Tool setting
    		1 V/DIV, 10 μs/DIV
    Vehicle conditions
    		Ignition switch ON



    2. C193942E01

  2. Waveform 2 (Reference)
    Terminal
    		CANL - E1
    Tool setting
    		1 V/DIV, 10 μs/DIV
    Vehicle conditions
    		Ignition switch ON



    3. C172769E02

  3. Waveform 3
    Terminal
    		SLS+ - SLS-
    Tool setting
    		5 V/DIV, 1 ms/DIV
    Vehicle conditions
    		Engine idling speed



    4. C172770E02

  4. Waveform 4
    Terminal
    		DS2 - E1
    Tool setting
    		10 V/DIV, 5 ms/DIV
    Vehicle conditions
    		Accelerator pedal further depressed after driving at a constant vehicle speed with shift lever in D

    HINT:
    Duty ratio increases with downshifts.



    5. C172771E01

  5. Waveform 5
    Terminal
    		DS1 - E1
    Tool setting
    		10 V/DIV, 5 ms/DIV
    Vehicle conditions
    		Accelerator pedal released while driving with shift lever in D

    HINT:
    Duty ratio increases with upshifts.



    6. C172772E02

  6. Waveform 6
    Terminal
    		DSU - E1
    Tool setting
    		10 V/DIV, 20 ms/DIV
    Vehicle conditions
    		Lock up turned from OFF to ON

    HINT:
    Duty ratio increases to 100% with the lock up ON.



    7. C172773E02

  7. Waveform 7
    Terminal
    		NIN+ - NIN-
    Tool setting
    		1 V/DIV, 2 ms/DIV
    Vehicle conditions
    		When driving with shift lever in D, vehicle speed approx. 6 km/h (3.7 mph) and engine speed approx. 700 rpm

    HINT:
    The wavelength shortens and the voltage increases as the primary pulley speed increases.



    8. C172755E03

  8. Waveform 8
    Terminal
    		NOTO - NOTB
    Tool setting
    		1 V/DIV, 2 ms/DIV
    Vehicle conditions
    		When driving with shift lever in D, vehicle speed approx. 12 km/h (7.5 mph) and engine speed approx. 1150 rpm

    HINT:
    The wavelength shortens as the secondary pulley speed increases.



    9. C172754E03

  9. Waveform 9
    Terminal
    		NTO - NTB
    Tool setting
    		1 V/DIV, 2 ms/DIV
    Vehicle conditions
    		When driving with shift lever in D, vehicle speed approx. 12 km/h (7.5 mph) and engine speed approx. 1150 rpm

    HINT:
    The wavelength shortens as the turbine speed increases.