Vehicle Stability Control System
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C0278/11: Open in ABS Solenoid Relay Circuit
DTC C0278/11 - Open in ABS Solenoid Relay Circuit
DTC C0279/12 - Short to B+ in ABS Solenoid Relay Circuit
DESCRIPTION
The ABS solenoid relay is built in the ABS and TRACTION actuator assembly. This relay supplies power to each ABS solenoid. If the initial check is OK, after the ignition switch is turned to the ON position, the relay goes on.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTE: When replacing the ABS and TRACTION actuator assembly, perform zero point calibration (Programming and Relearning).
PROCEDURE
1. INSPECT ABS NO. 1 FUSE
(a) Remove the ABS No. 1 fuse from the engine room R/B.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE ABS NO. 1 FUSE
OK -- Continue to next step.
2. INSPECT SKID CONTROL ECU (+BS TERMINAL)
(a) Disconnect the skid control ECU connector.
(b) 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.
3. INSPECT SKID CONTROL ECU (GND TERMINAL)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT)
OK -- Continue to next step.
4. RECONFIRM DTC
HINT: These codes are detected when a problem is determined in the ABS and TRACTION actuator assembly.
The ABS solenoid relay is in the ABS and TRACTION actuator assembly.
Therefore, solenoid relay circuit inspection relay unit inspection cannot be performed. Be sure to check if the DTC code is output before replacing the ABS and TRACTION actuator assembly.
(a) Clear the DTCs (Vehicle Stability Control System).
(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded?
NO -- END
YES -- REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY