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 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.
|
- ABS2 fuse
- ABS solenoid relay circuit
- ABS solenoid relay (brake actuator assembly)
| 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.
HINT: When
C1241 and/or C1417 is output together with C146E, inspect and repair the
trouble areas indicated by C1241 and/or C1417 first. for C1241: Click here
for C1417: Click here
PROCEDURE
| 1. |
CHECK HARNESS AND CONNECTOR (+BS 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. |
 |
|
*a | Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly)) | | |
(b) Disconnect the A57 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 | |
A57-25 (+BS) - Body ground |
Always | 11 to 14 V |
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR (+BS CIRCUIT) |
|
OK |
 | |
| 2. |
CHECK HARNESS AND CONNECTOR (GND1 TERMINAL) |
| (a) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
A57-38 (GND1) - Body ground |
Always | Below 1 Ω | |
 |
|
*a | Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly)) | | |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR (GND1 CIRCUIT) |
|
OK | |
| |
HINT:
(a) Reconnect the A57 skid control ECU (brake actuator assembly) connector.
(b) Clear the DTCs. Click here
(c) Turn the ignition switch off. (d) Start the engine. (e) Drive the vehicle at a speed of 9 km/h (6 mph) or more for 30 seconds or more.
(f) Check if the same DTC is output. Click here
|
Result | Proceed to | |
C146E is not output | A | |
C146E is output | B |
HINT:
- If a speed signal of 9 km/h (6 mph) or more is received by the skid
control ECU (brake actuator assembly) with the ignition switch ON, the
skid control ECU (brake actuator assembly) performs self diagnosis of
the motor circuit.
- If the normal system code is output (no DTCs are output), slightly
jiggle the connectors, wire harnesses, and fuses of the skid control ECU
(brake actuator assembly).
- If any DTCs are output while jiggling a connector or wire harness of the
skid control ECU (brake actuator assembly), inspect and repair the
connector or wire harness.
- If no DTCs were output when reconfirming DTCs, checking for intermittent
problems is necessary because it is suspected that the original DTCs
were stored due to the poor connection of a connector terminal.
| A |
| USE SIMULATION METHOD TO CHECK |
| B |
| REPLACE BRAKE ACTUATOR ASSEMBLY | | 
