Toyota Camry (XV70): Brake System Control Module "A" System Voltage System Voltage High (C137BA3)
DESCRIPTION
If a malfunction is detected in the power supply circuit, the skid control ECU (brake actuator assembly) stores this DTC and the fail-safe function prohibits ABS operation.
This DTC is stored when the +BS terminal voltage deviates due to a malfunction in a power supply or charging system circuit such as the battery or alternator circuit, etc.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
C137BA3 | Brake System Control Module "A" System Voltage System Voltage High |
+BS terminal voltage is more than 16.5 V for 1 second or more. |
|
WIRING DIAGRAM
Refer to DTC C137BA2
Click here
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CAUTION / NOTICE / HINT
NOTICE:
After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and system information memorization.
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PROCEDURE
| 1. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) |
| (a) Make sure that there is no looseness at the locking part and the connecting part of the connector. OK: The connector is securely connected. |
|
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(b) Disconnect the A33 skid control ECU (brake actuator 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 |
|---|---|---|
|
A33-25 (+BS) - Body ground |
Always | 11 to 14 V |
| OK | .gif) | REPLACE BRAKE ACTUATOR ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Stop Lamp Relay Actuator Stuck Off (C13807F)
DESCRIPTION Refer to DTC C13807E. Click here
DTC No. Detection Item
DTC Detection Condition Trouble Area
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When the voltage
Brake Pressure Control Solenoid "A" Control Circuit Short to Battery (C13C012,...,C13C949)
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Depending on the operating conditions, the master cylinder cut solenoid valves
SEE MORE:
Parts Location
PARTS LOCATION ILLUSTRATION
*1 FRONT AXLE HUB SUB-ASSEMBLY RH
- FRONT SPEED SENSOR ROTOR RH
*2 FRONT SPEED SENSOR RH
*3 FRONT AXLE HUB SUB-ASSEMBLY LH
- FRONT SPEED SENSOR ROTOR LH
*4 FRONT SPEED SENSOR LH
*5 REAR AXLE HUB AND BEARING ASSEMBLY R
Left Front Wheel Speed Sensor Signal Stuck Low (C050023)
DESCRIPTION Refer to DTC C050012 Click here
DTC No. Detection Item
DTC Detection Condition Trouble Area
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When the vehicle is driven from 0 km/h to 12 km/h (0 mph to 7 mph), the wheel speed is 1.8 km/h (1.1
