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Home >> Lexus >> 2006 >> RX 330 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Brakes - Abs With EBD & BD & TRAC & VSC (Diagnostics)) >> DTC C0278/11, C0279/12: Open Or Short Circuit In Abs Solenoid Relay Circuit; +B Short Circuit In Abs Solenoid Relay Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

The ABS solenoid relay is built in the master cylinder solenoid. 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.

DIAGNOSTIC TROUBLE CODE TABLE

DTC No. DTC Detection Condition Trouble Area
C0278/11 When either of the following conditions is detected:
  1. Both of the following conditions continue for at least 0.2 seconds.
    • IG voltage is between 9.5 and 17 V.
    • Relay contact is open when the relay is ON.
  2. Both of the following conditions continue for at least 0.2 seconds.
    • IG voltage is 9.5 V or less when the relay is ON.
    • Relay contact remains open.
  • ABS SOL fuse
  • ABS solenoid relay
  • ABS solenoid relay circuit
  • Master cylinder solenoid
C0279/12 The following condition continues for at least 0.2 seconds.
  • Relay contact is closed immediately after turning IG switch to the ON position when the relay is OFF.
  • ABS SOL fuse
  • ABS solenoid relay
  • ABS solenoid relay circuit
  • Master cylinder solenoid
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