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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 135 (Electronically Controlled Brake System (HV) - Diagnostic Codes (09 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C141C-49: Brake Booster Motor "A" Control Internal Electronic Failure [12/2019 - 10/2021] >> Component Operating Range

Component Operating Range

WARNING: This page is about a different variant/trim than selected.
C141C (CASE 1)

All of the following conditions are met -
Brake system voltage 1 Higher than 7.3 V and less than 16.6 V
Output duty order value (command to motor relay port) 100%
Motor circuit current Less than 264.00 A
C141C (CASE 2 TO 9)

Both of the following conditions are met A and B
A. All of the following conditions are met at the ECU status (last IG ON timing final) -
Brake system voltage fail (C12FA, C12FB) Not detected
Brake booster motor fail (C141C, C141D, C141E, C141F) Not detected
Brake pressure control solenoid fail (C14F4, C14FD, C150A, C1510) Not detected
B. All of the following conditions are met at the ECU status (pre main) -
Brake system voltage fail (C121F, C12FA, C12FB) Not detected
Brake booster motor fail (C141C) Not detected
Brake pressure control solenoid fail (C14F3, C14F4, C14FC, C14FD, C1509, C150A, C150F, C1510) Not detected
C141C (CASE 10)

All of the following conditions are met A, B, C, D, E, F, G, H, I and J
A. Brake system voltage 1 Less than 16.6 V
B. MRI1 voltage 5.7 V or more
C. Motor relay input signal permission On
D. Command to motor relay On
E. Motor duty output order value 100%
F. Command to reverse battery protection MOS Off
G. Command to motor fail-safe relay Off
H. ASIC output permission Off
I. All of the following conditions are met at the ECU status (last IG ON timing final) -
Brake system voltage fail (C12FA, C12FB) Not detected
Brake booster motor fail (C141C, C141D, C141E, C141F) Not detected
Brake pressure control solenoid fail (C14F4, C14FD, C150A, C1510) Not detected
J. All of the following conditions are met at the ECU status (pre main) -
Brake system voltage fail (C121F, C12FA, C12FB) Not detected
Brake booster motor fail (C141C) Not detected
Brake pressure control solenoid fail (C14F3, C14F4, C14FC, C14FD, C1509, C150A, C150F, C1510) Not detected