BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for HEV Model)  C121F87  Electronic Brake Booster Control Module "A" Missing Message  C136E17  Electronic Brake Booster Control Module "A" Backup Power Supply Voltage Circuit Voltage Above Threshold  C136E1E  Electronic Brake Booster Control Module "A" Backup Power Supply Voltage Circuit Resistance Out of Range  C136E49  Electronic Brake Booster Control Module "A" Backup Power Supply Voltage Internal Electronic Failure  C137A04  Electronic Brake Booster Control Module "A" Backup Power Supply Module System Internal Failure  C137A17  Electronic Brake Booster Control Module "A" Backup Power Supply Module Circuit Voltage Above Threshold  C137A49  Electronic Brake Booster Control Module "A" Backup Power Supply Module Internal Electronic Failure  C137A86  Electronic Brake Booster Control Module "A" Backup Power Supply Module Signal (some circuit quantity, reported via serial data) Invalid  C137A87  Electronic Brake Booster Control Module "A" Backup Power Supply Module Missing Message  C13BE00  Electronic Brake Booster Control Module "A" Backup Power Supply Module Charging Circuit  C13BE49  Electronic Brake Booster Control Module "A" Backup Power Supply Module Charging Circuit Internal Electronic Failure  C13DF1C  Electronic Brake Booster Control Module "A" Backup Power Supply Module Circuit Voltage Out of Range  C13FC49  Electronic Brake Booster Control Module "A" Internal Electronic Failure  C13FD12  Electronic Brake Booster Control Module "A" Backup Power Supply Module Discharge Circuit Circuit Short to Battery  C13FD14  Electronic Brake Booster Control Module "A" Backup Power Supply Module Discharge Circuit Circuit Short to Ground or Open  C148E1C  Electronic Brake Booster Control Module "A" Backup Power Supply Module Sensor Circuit Voltage Out of Range  C14BF49  Electronic Brake Booster Control Module "A" Backup Power Supply Module Backup Circuit Internal Electronic Failure  C14CC1C  Electronic Brake Booster Control Module "A" Backup Power Supply Module Temperature Sensor Circuit Voltage Out of Range  

WIRING DIAGRAM

1.042,0.844 1.302,1.021 0.26,0.177 10 false LIN 0.854,1.344 1.313,1.521 0.458,0.177 10 false WKUP 0.979,1.833 1.302,2.01 0.323,0.177 10 false OUT 0.99,2.563 1.333,2.74 0.344,0.177 10 false +BC 0.24,4.104 1.552,4.719 1.313,0.615 10 false Brake Control Power Supply Assembly 2.708,2.729 3.573,2.927 0.865,0.198 10 false CAPACITOR 5.885,0.865 6.25,1.042 0.365,0.177 10 false CLIN 5.885,1.354 6.333,1.531 0.448,0.177 10 false CWKP 5.885,1.854 6.333,2.031 0.448,0.177 10 false CBKP 4.677,4.333 7.052,4.813 2.375,0.479 10 false Electric Brake Booster (Brake Booster with Master Cylinder Assembly) 0.844,5.354 2.469,5.552 1.625,0.198 10 false : LIN Communication Line 0.99,3.396 1.333,3.573 0.344,0.177 10 false GND 1.406,0.708 1.906,0.917 0.5,0.208 10 false 2 5.604,0.729 6.104,0.938 0.5,0.208 10 false 21 1.406,1.24 1.906,1.448 0.5,0.208 10 false 3 1.406,1.719 1.906,1.927 0.5,0.208 10 false 6 1.406,2.458 1.906,2.667 0.5,0.208 10 false 1 1.406,3.24 1.906,3.448 0.5,0.208 10 false 4 0.24,3.938 0.74,4.146 0.5,0.208 10 false O225 5.677,1.229 6.177,1.438 0.5,0.208 10 false 8 5.677,1.729 6.177,1.938 0.5,0.208 10 false 1 4.688,4.156 5.188,4.365 0.5,0.208 10 false A194 3.781,2.563 5.469,2.802 1.688,0.24 10 false from Auxiliary Battery

PROCEDURE

1.CHECK HARNESS AND CONNECTOR (+BC TERMINAL)

a.

1.5,0.073 1.917,0.323 0.417,0.25 0.75,1.927 1,1.281 true 1.542,0.104 2,0.302 0.458,0.198 10 false O225 0.167,0.135 0.479,0.333 0.313,0.198 10 false *a 0.573,1.958 1.031,2.156 0.458,0.198 10 false +BC

*a	Front view of wire harness connector (to Brake Control Power Supply Assembly)

Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

b.

Disconnect the O225 brake control power supply assembly connector.

c.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

d.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
O225-1 (+BC) - Body ground	Always	11 to 14 V

Result:

Proceed to
OK
NG

OK

2.CHECK HARNESS AND CONNECTOR (GND TERMINAL)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.CHECK HARNESS AND CONNECTOR (GND TERMINAL)

a.

Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

b.

Disconnect the O225 brake control power supply assembly connector.

c.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

d.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O225-4 (GND) - Body ground	1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal	Below 1 Ω

Result:

Proceed to
OK
NG

OK

3.CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - BRAKE CONTROL POWER SUPPLY ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - BRAKE CONTROL POWER SUPPLY ASSEMBLY)

a.

Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

b.

Disconnect the A194 electric brake booster (brake booster with master cylinder assembly) connector.

c.

Disconnect the O225 brake control power supply assembly connector.

d.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

e.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
A194-21 (CLIN) - O225-2 (LIN)	Always	Below 1 Ω
A194-21 (CLIN) or O225-2 (LIN) - Body ground and other terminals	Always	10 kΩ or higher
A194-1 (CBKP) - O225-6 (OUT)	Always	Below 1 Ω
A194-1 (CBKP) or O225-6 (OUT) - Body ground and other terminals	Always	10 kΩ or higher
A194-8 (CWKP) - O225-3 (WKUP)	Always	Below 1 Ω
A194-8 (CWKP) or O225-3 (WKUP) - Body ground and other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

OK

REPLACE BRAKE CONTROL POWER SUPPLY ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE CONTROL POWER SUPPLY>REMOVAL202307,999999,_54,_112606,_0604465,RM100000002BUF2,

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR