Toyota CH-R Service Manual: Terminals Of Ecu

TERMINALS OF ECU

CHECK SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

*a

Component without harness connected

(Skid Control ECU (Brake Actuator Assembly))

-

-

(a) Disconnect the A42 skid control ECU (brake actuator assembly) connectors.

(b) Measure the voltage and resistance according to the value (s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A42-30 (+BS) - Body ground

W

Parking brake motor (parking brake actuator assembly) power supply

Always

11 to 14 V

A42-36 (IG1) - Body ground

B

IG power supply

Ignition switch ON

11 to 14 V

A42-46 (GND1) - Body ground

W-B

Ground

Always

Below 1 Ω

A42-14 (GND2) - Body ground

W-B

Ground

Always

Below 1 Ω

A42-2 (MRR+) - Body ground

B

Parking brake motor RH (parking brake actuator assembly RH) (+)

-

-

A42-3 (MRR-) - Body ground

B

Parking brake motor RH (parking brake actuator assembly RH) (-)

-

-

A42-13 (MRL+) - Body ground

R

Parking brake motor LH (parking brake actuator assembly LH) (+)

-

-

A42-12 (MRL-) - Body ground

L

Parking brake motor LH (parking brake actuator assembly LH) (-)

-

-

A42-35 (POL) - Body ground

V

Electric parking brake switch indicator light

-

-

A42-31 (SWI1) - Body ground

B

Electric parking brake switch (electric parking brake switch assembly)

-

-

A42-15 (SWI2) - Body ground

LG

Electric parking brake switch (electric parking brake switch assembly)

-

-

A42-32 (SWO1) - Body ground

P

Electric parking brake switch (electric parking brake switch assembly)

-

-

A42-16 (SWO2) - Body ground

L

Electric parking brake switch (electric parking brake switch assembly)

-

-

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