VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU
TERMINALS OF ECU
for CVT
Table 1. Text in Illustration *a
Component without harness connected
(Skid Control ECU (Brake Actuator Assembly))
-
-
Terminal No. (Symbol)
Terminal Description
1 (+BM)
Motor relay power supply
2 (SP1)
Speed signal output for speedometer
3 (STPO)
Stop light control relay output
4 (FR-)
Front wheel speed RH (-) signal input
5
- (Not used)
6
- (Not used)
7
- (Not used)
8 (FL-)
Front wheel speed LH (-) signal input
9 (CSW)
VSC OFF switch input
10
- (Not used)
11
- (Not used)
12
- (Not used)
13 (GND2)
Pump motor ground
14 (CANL)
CAN communication line L
15
- (Not used)
16 (FR+)
Front wheel speed RH (+) signal input
17 (RR+)
Rear wheel speed RH (+) signal input
18 (RL-)
Rear wheel speed LH (-) signal input
19 (FL+)
Front wheel speed LH (+) signal input
20
- (Not used)
21
- (Not used)
22 (STP2)
Stop light control relay signal output
23
- (Not used)
24
- (Not used)
25 (+BS)
ABS solenoid relay power supply
26 (CANH)
CAN communication line H
27 (TS)
Sensor check input
28 (IG1)
IG1 power source input
29 (RR-)
Rear wheel speed RH (-) signal input
30 (STP)
Stop light switch assembly input
31 (RL+)
Rear wheel speed LH (+) signal input
32
- (Not used)
33
- (Not used)
34
- (Not used)
35
- (Not used)
36
- (Not used)
37
- (Not used)
38 (GND1)
Skid control ECU ground
except CVT
Table 2. Text in Illustration *a
Component without harness connected
(Skid Control ECU (Brake Actuator Assembly))
-
-
Terminal No. (Symbol)
Terminal Description
1 (+BS)
ABS solenoid relay power supply
2 (CANH)
CAN communication line H
3 (TS)
Sensor check input
4 (IG1)
IG1 power source input
5 (RR-)
Rear wheel speed RH (-) signal input
6 (STP)
Stop light switch assembly input
7 (RL+)
Rear wheel speed LH (+) signal input
8
- (Not used)
9
- (Not used)
10
- (Not used)
11
- (Not used)
12
- (Not used)
13
- (Not used)
14 (GND1)
Skid control ECU ground
15 (+BM)
Motor relay power supply
16 (CANL)
CAN communication line L
17
- (Not used)
18 (FR+)
Front wheel speed RH (+) signal input
19 (RR+)
Rear wheel speed RH (+) signal input
20 (RL-)
Rear wheel speed LH (-) signal input
21 (FL+)
Front wheel speed LH (+) signal input
22
- (Not used)
23
- (Not used)
24 (STP2)
Stop light control relay signal output
25
- (Not used)
26
- (Not used)
27 (SP1)
Speed signal output for speedometer
28 (STPO)
Stop light control relay output
29 (FR-)
Front wheel speed RH (-) signal input
30
- (Not used)
31
- (Not used)
32
- (Not used)
33 (FL-)
Front wheel speed LH (-) signal input
34 (CSW)
VSC OFF switch input
35
- (Not used)
36
- (Not used)
37
- (Not used)
38 (GND2)
Pump motor ground
TERMINAL INSPECTION
for CVT
Disconnect the connector and measure the voltage and resistance on the wire harness side.
Table 3. Text in Illustration *a
Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly))
-
-
Tip:The voltage cannot be measured with the connector connected to the skid control ECU (brake actuator assembly) because the connector is watertight.
Table 4. Standard Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
A78-1 (+BM) - Body ground
L - Body ground
Motor relay power supply
Always
11 to 14 V
A78-9 (CSW) - Body ground
P - Body ground
VSC OFF switch input
VSC OFF switch ON → OFF (Pressed → not pressed)
Below 1 Ω → 10 kΩ or higher
A78-13 (GND2) - Body ground
W-B - Body ground
Pump motor ground
Always
Below 1 Ω
A78-22 (STP2) - Body ground
L- Body ground
Stop light switch assembly (stop light control relay) input
Stop light switch assembly ON → OFF (Brake pedal depressed → released)
11 to 14 V → Below 1.5 V
A78-25 (+BS) - Body ground
W - Body ground
ABS solenoid relay power supply
Always
11 to 14 V
A78-28 (IG1) - Body ground
G - Body ground
IG1 power source input
Ignition switch ON
11 to 14 V
A78-30 (STP) - Body ground
V - Body ground
Stop light switch assembly input
Stop light switch assembly ON → OFF (Brake pedal depressed → released)
11 to 14 V* → Below 1.5 V
A78-38 (GND1) - Body ground
W-B - Body ground
Skid control ECU ground
Always
Below 1 Ω
Tip:*: The standard voltage value varies depending on the +BS terminal voltage value. The standard voltage is 85% of the +BS terminal voltage.
except CVT
Disconnect the connector and measure the voltage and resistance on the wire harness side.
Table 5. Text in Illustration *a
Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly))
-
-
Tip:The voltage cannot be measured with the connector connected to the skid control ECU (brake actuator assembly) because the connector is watertight.
Table 6. Standard Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
A79-1 (+BS) - Body ground
W - Body ground
ABS solenoid relay power supply
Always
11 to 14 V
A79-4 (IG1) - Body ground
G*1, L*2 - Body ground
IG1 power source input
Ignition switch ON
11 to 14 V
A79-6 (STP) - Body ground
V - Body ground
Stop light switch assembly input
Stop light switch assembly ON → OFF (Brake pedal depressed → released)
11 to 14 V*3 → Below 1.5 V
A79-14 (GND1) - Body ground
W-B - Body ground
Skid control ECU ground
Always
Below 1 Ω
A79-15 (+BM) - Body ground
L - Body ground
Motor relay power supply
Always
11 to 14 V
A79-24 (STP2) - Body ground
L- Body ground
Stop light switch assembly (stop light control relay) input
Stop light switch assembly ON → OFF (Brake pedal depressed → released)
11 to 14 V → Below 1.5 V
A79-34 (CSW) - Body ground
P - Body ground
VSC OFF switch input
VSC OFF switch ON → OFF (Pressed → not pressed)
Below 1 Ω → 10 kΩ or higher
A79-38 (GND2) - Body ground
W-B - Body ground
Pump motor ground
Always
Below 1 Ω
*1: w/o Stop and Start System
*2: w/ Stop and Start System
Tip:*3: The standard voltage value varies depending on the +BS terminal voltage value. The standard voltage is 85% of the +BS terminal voltage.