RM35X0E _54 Brake _078667 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0385049 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/ VSC OFF Switch) U

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/ VSC OFF Switch)  TERMINALS OF ECU  


TERMINALS OF ECU


C238830C02
0.209,0.168 0.407,0.339 0.198,0.17 10 *a
*a Component without harness connected
(Skid Control ECU (Brake Actuator Assembly)) 		- -


HINT:
·

As a waterproof connector is used for the brake actuator assembly, voltage and waveform inspections cannot be performed with the connector connected.


·

Use the GTS to read data and perform Active Tests when inspecting the operation and communication status of the brake actuator assembly.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ VSC OFF Switch)>DATA LIST / ACTIVE TEST



Terminal No. (Symbol) Terminal Description

*1: w/ STOP LP Relay (Stop Light Relay)

*2: w/ Rear Combination Light (for LED Type) (w/ Pre-collision System)

*3: w/ Brake Pedal Load Sensing Switch

1 (+BM) ABS motor relay power supply
2 (SP1) Speed signal output for speedometer
3 (STPO)*1, *2 STOP LP relay (stop light relay) output*1
Stop light relay (stop light switch assembly) output*2
4 (FR-) Front wheel speed RH (-) signal input
5 -
6 -
7 -
8 (FL-) Front wheel speed LH (-) signal input
9 (STP) Stop light switch assembly signal input
10 -
11 -
12 -
13 (GND2) Pump motor ground
14 (CANL) CAN communication line L
15 -
16 (FR+) Front wheel speed RH (+) power supply output
17 (RR+) Rear wheel speed RH (+) power supply output
18 (RL-) Rear wheel speed LH (-) signal input
19 (FL+) Front wheel speed LH (+) signal input
20 -
21 -
22 (CSW) VSC OFF switch input
23 -
24 (STP2)*1, *2 STOP LP relay (stop light relay) input*1
Stop light relay (stop light switch assembly) input*2
25 (+BS) ABS solenoid relay power supply
26 (CANH) CAN communication line H
27 -
28 (IG1) IG1 power source input
29 (RR-) Rear wheel speed RH (-) signal input
30 -
31 (RL+) Rear wheel speed LH (+) power supply output
32 -
33 -
34 -
35 -
36 (FSW+)*3 Brake pedal load sensing switch (Brake pedal support assembly) input
37 -
38 (GND1) Skid control ECU (brake actuator assembly) ground


TERMINAL INSPECTION


a.

Disconnect the A28 skid control ECU (brake actuator assembly) connector and measure the voltage and resistance on the wire harness side.

C238831C18
1.521,0.677 1.938,0.948 0.417,0.271 0.219,0.135 0.448,0.344 0.229,0.208 10 false *a 1.594,0.74 1.906,0.896 0.313,0.156 10 false A28
*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

*1: w/ STOP LP Relay (Stop Light Relay)

*2: w/ Rear Combination Light (for LED Type) (w/ Pre-collision System)

*3: w/o Stop and Start System

*4: w/ Stop and Start System

A28-1 (+BM) - Body ground R - Body ground ABS motor relay power supply Always 11 to 14 V
A28-3 (STPO) - Body ground*1, *2 BE - Body ground*1 STOP LP relay (stop light relay) output*1 Always 11 to 14 V
G - Body ground*2 Stop light relay (stop light switch assembly) output*2
A28-9 (STP) - Body ground R - 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
A28-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
A28-22 (CSW) - Body ground W - Body ground VSC OFF switch input VSC OFF switch on → off (Pressed → not pressed) Below 1 Ω → 10 kΩ or higher
A28-24 (STP2) - Body ground*1, *2 SB - Body ground STOP LP relay (stop light relay) input*1
Stop light relay (stop light switch assembly) input*2 		Stop light switch assembly on → off (Brake pedal depressed → released) 11 to 14 V → 1.5 V or less
A28-25 (+BS) - Body ground B - Body ground ABS solenoid relay power supply Always 11 to 14 V
A28-28 (IG1) - Body ground B - Body ground IG1 power source input Ignition switch ON 11 to 14 V*3
10.5 to 16 V*4
A28-38 (GND1) - Body ground W-B - Body ground Skid control ECU (brake actuator assembly) ground Always Below 1 Ω