C146E

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C146E; Open in ABS Solenoid Relay Circuit; 2013 MY FR-S [03/2012 -]
C146E - Open in ABS Solenoid Relay Circuit

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 TR(A)C solenoids.

The skid control ECU detects a solenoid relay malfunction by performing a self check and relay operation check.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* When replacing the skid control ECU (brake actuator assembly), perform VSC sensor neutral memorization Programming and Relearning.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT
When C1241 is output together with C146E, inspect and repair the trouble areas indicated by C1241 first C1241.

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.









(b) Disconnect the skid control ECU (brake actuator assembly) connector.

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

Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (+BS CIRCUIT)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (GND1 TERMINAL)

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









Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (GND1 CIRCUIT)
OK -- Continue to next step.

3. RECONFIRM DTC

HINT
This DTC is stored when a problem is identified in the skid control ECU (brake actuator assembly).

The solenoid circuits are located in the brake actuator assembly.

Therefore, solenoid circuit inspection and solenoid unit inspection cannot be performed. Be sure to check if the DTC is output again before replacing the skid control ECU (brake actuator assembly).

(a) Reconnect the skid control ECU (brake actuator assembly) connector.

(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(c) Turn the ignition switch off.

(d) Start the engine.

(e) Drive the vehicle at a speed of 40 km/h (25 mph) or more for 30 seconds or more.

(f) Check if the same DTC is output Reading and Clearing Diagnostic Trouble Codes.

Result:





HINT
* If a speed signal of 15 km/h (9 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 solenoid 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.

B -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal

A -- CHECK FOR INTERMITTENT PROBLEMS