Open Circuit in ABS Solenoid Relay Circuit (C146E)
DESCRIPTION
The ABS
solenoid relay is built into the skid control ECU in the brake actuator
assembly. The ABS solenoid relay supplies power to the ABS and TRAC
solenoids. The skid control ECU (brake actuator assembly) detects an ABS
solenoid relay malfunction by performing a self check and relay
operation check.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|
C146E | Open Circuit in ABS Solenoid Relay Circuit |
Either of the following is detected:
- The ABS solenoid relay drive circuit in the skid control ECU (brake actuator assembly) is malfunctioning.
- The ABS solenoid relay cannot be switched between on and off.
|
- ABS NO. 2 fuse
- ABS solenoid relay circuit
- ABS solenoid relay (brake actuator assembly)
|
DTC Detection Conditions: C146E | |
Vehicle Condition |
|
Pattern 1 | Pattern 2 |
|
Diagnosis Condition | - |
- | - |
|
Malfunction Status | The ABS solenoid relay drive circuit in the skid control ECU (brake actuator assembly) is malfunctioning. |
â—‹ | - |
|
The ABS solenoid relay cannot be switched between on and off. |
- | â—‹ |
|
Detection Time | - |
- |
|
Number of Trips | 1 trip |
1 trip |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the skid control ECU (brake actuator assembly), perform
system variant learning and acceleration sensor zero point calibration.
Click here 
- Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
|
1. | REPLACE BRAKE ACTUATOR ASSEMBLY |
(a) Replace the skid control ECU (brake actuator assembly).
Click here
HINT:
This DTC is output when the skid control ECU (brake actuator assembly) detects a malfunction in an internal circuit.
(b) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Utility / Test Mode.
(c) Perform system variant learning and acceleration sensor zero point calibration.
Click here
Chassis > ABS/VSC/TRAC/EPB > Utility
(d) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Utility / Signal Check.
(e) Perform the sensor check using the Test Mode (Signal Check) procedure.
Click here
Chassis > ABS/VSC/TRAC/EPB > Utility
|
Tester Display |
| Signal Check |
| NEXT |
 | END |
Air Bag Circuit (C147D)
DESCRIPTION
The skid
control ECU (brake actuator assembly) receives the secondary collision
brake control request signal from the airbag sensor assembly.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|
C147D | Air Bag Circuit |
An
abnormal secondary collision brake control request signal is received 3
times or more when communication with the airbag sensor assembly is
possible. |
- Airbag sensor assembly
- Skid control ECU (brake actuator assembly)
|
CAUTION / NOTICE / HINT
NOTICE:
When
replacing the skid control ECU (brake actuator assembly), perform
system variant learning and acceleration sensor zero point calibration.
Click here
PROCEDURE
| 1. |
CHECK DTC (AIRBAG SYSTEM) |
(a) Check if airbag system DTCs are output.
Body Electrical > SRS Airbag > Trouble Codes
| Result |
Proceed to |
| DTCs are not output |
A |
| DTCs are output |
B |
| A |
 | REPLACE BRAKE ACTUATOR ASSEMBLY |
| B |
| GO TO DIAGNOSTIC TROUBLE CODE CHART (AIRBAG SYSTEM) |
