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FAILSAFE FUNCTION Kia Spectra I рестайлинг 2

ABS (Anti-Lock Brake System) 3 illustrations ~369 words

FAILSAFE FUNCTION

Over voltage failure

System down. Both the ABS, (TCS) and the EBD function are inhibited and the ABS, (TCS) and the EBD warning lamps are activated. In this failure, the valve relay and all solenoids are prevented from being switched on.

Low voltage failure

  1. Outside the ABS control cycle: Inhibit the ABS, (TCS) control of front wheels and allow the ABS control of rear wheels, deactivating the motor, and the ABS, (TCS) warning lamp is switched on. When the voltage recover to the normal operating range, enable ABS function and ABS, (TCS) warning lamp is switched off and erase the error code.
  2. Inside the ABS control cycle: Inhibit ABS control of the front wheels and allow ABS control of the rear wheels, deactivating the motor. The ABS, (TCS) warning lamp is directly switched on and the state keeps continuously. The error code is always stored.

Scheme 77

Scheme 77: INSPECTION PROCEDURES
Scheme 77: INSPECTION PROCEDURES

Scheme 78

Scheme 78
Scheme 78

Scheme 79

Scheme 79
Scheme 79
  1. CHECK FUSE (10A) FROM JUNCTION BLOCK. Check continuity of fuse (10A) from passenger compartment junction block (A). Is there continuity? Yes: Go to next step. No: Check for short circuit in all the harness and components connected to fuse.
  2. CHECK BATTERY POSITIVE VOLTAGE. Is battery voltage within 10-14V? Yes: Go to next step. No: Check and repair the charging system.
  3. CHECK FOR VOLTAGE BETWEEN TERMINALS OF HECU HARNESS SIDE CONNECTOR. Disconnect the connector from the ABS control module. Turn the ignition switch ON. Measure the voltage between terminals 4, 8 and 24 of the ABS control module harness side connector. Specification: approximately B+ Is the voltage within specification? No: Go to next step. Yes: Check and replace the ABS control module.
  4. CHECK THE RESISTANCE BETWEEN TERMINALS OF HECU CONNECTOR AND BODY GROUND. Measure the resistance between terminals 8 and 24 of ABS control module harness side connector and body ground. Specification: 1ohms or less Is the resistance within specification? Yes: Go to next step. No: Repair an open in the wire or faulty ground point.
  5. CHECK FOR OPEN CIRCUIT BETWEEN TERMINAL OF HECU CONNECTOR AND FUSE. Check for open circuit in harness and connector between terminal 4 of ABS control module harness side connector and fuse (10A) in the passenger compartment junction block (A).