TERMINALS OF ECU
TERMINALS OF ECU
*a | Component without harness connected (Skid Control ECU (Brake Actuator Assembly)) | - | - |
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Terminal No. (Symbol) | Terminal Description |
---|---|
1 (+BM) | ABS motor relay power supply |
2 | - |
3 | - |
4 | - |
5 (CANH) | CAN communication line H |
6 | - |
7 (FL-) | Front wheel speed LH (-) signal input |
8 | - |
9 | - |
10 | - |
11 | - |
12 | - |
13 | - |
14 (GND2) | Pump motor ground |
15 | - |
16 | - |
17 | - |
18 | - |
19 (CANL) | CAN communication line L |
20 | - |
21 (FR+) | Front wheel speed RH (+) power supply output |
22 (RR+) | Rear wheel speed RH (+) power supply output |
23 (RL-) | Rear wheel speed LH (-) signal input |
24 (FL+) | Front wheel speed LH (+) power supply output |
25 | - |
26 (FR-) | Front wheel speed RH (-) signal input |
27 | - |
28 | - |
29 | - |
30 (+BS) | ABS solenoid relay power supply |
31 | - |
32 | - |
33 (STPO) | Stop light control relay (stop light switch assembly) output |
34 (SP1) | Speed signal output for speedometer |
35 | - |
36 (IG1) | IG1 power source input |
37 (RR-) | Rear wheel speed RH (-) signal input |
38 (CSW) | VSC OFF switch input |
39 (RL+) | Rear wheel speed LH (+) power supply output |
40 | - |
41 (STP) | Stop light switch assembly signal input |
42 (EXI3) | Brake hold switch (No. 3 combination switch assembly) input |
43 (STP2) | Stop light signal input |
44 | - |
45 | - |
46 (GND1) | Skid control ECU (brake actuator assembly) ground |
TERMINAL INSPECTION
(a) Disconnect the A40 skid control ECU (brake actuator assembly) connector and measure the voltage and resistance on the wire harness side.
*a | Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly)) | - | - |
(b) Measure the voltage or resistance according to the value(s) in the table below.
Standard Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
A40-1 (+BM) - Body ground | B - Body ground | ABS motor relay power supply | Always | 11 to 14 V |
A40-14 (GND2) - Body ground | W-B - Body ground | Pump motor ground | Always | Below 1 Ω |
A40-30 (+BS) - Body ground | G - Body ground | ABS solenoid relay power supply | Always | 11 to 14 V |
A40-33 (STPO) - Body ground | L - Body ground | Stop light control relay (stop light switch assembly) output | Always | 11 to 14 V |
A40-36 (IG1) - Body ground | B - Body ground | IG1 power source input | Engine switch on (IG) | 11 to 14 V |
A40-38 (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 |
A40-41 (STP) - Body ground | GR - Body ground | Stop light switch assembly signal input | Stop light switch assembly on → off (Brake pedal depressed → released) | 11 to 14 V → 1.5 V or less |
A40-42 (EXI3) - Body ground | G - Body ground | Brake hold switch (No. 3 combination switch assembly) input | Brake hold switch (No. 3 combination switch assembly) on → off (Pressed → not pressed) | Below 1 Ω → 10 kΩ or higher |
A40-43 (STP2) - Body ground | R - Body ground | Stop light signal input | Stop light switch assembly on → off (Brake pedal depressed → released) | 11 to 14 V → 1.5 V or less |
A40-46 (GND1) - Body ground | W-B - Body ground | Skid control ECU (brake actuator assembly) ground | Always | Below 1 Ω |