Code 16 - Abs Enable Relay Coil Circuit Open: Notes
Ignition voltage is supplied through ABS enable relay. EBCM energizes pull-in coil by completing ground circuit at EBCM ABS relay control terminal. Magnetic field created will close ABS enable relay contacts to supply battery voltage to Electro-Mechanical Brake (EMB) and EBCM, providing power to motors and solenoids.
Code 16 can only set after Code 14 has been set. This test detects an open in ABS enable relay coil circuit. This malfunction will not allow ABS enable relay to energize thus preventing voltage/current to motors, EMBs and solenoids. If malfunction is present and ignition is turned off before 3 MPH is reached, Code 14 will set alone. Code will be stored, ABS is disabled and ABS warning light is illuminated.
NOTE:
Test numbers refer to numbers on diagnostic chart. Use only 10-megohm (minimum) DVOM for all voltage and resistance tests. For identification of circuits and terminals referenced in charts and text, see WIRING DIAGRAM
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- Determines if EBCM is capable of controlling ABS enable relay.
- Checks for continuity through pull-in coil of ABS enable relay.
- Checks for voltage at pull-in coil of ABS enable relay.
- Checks for continuity in ABS enable relay control circuit.
- Ensures malfunction was not due to poor terminal contact.
- Identifies whether malfunction is due to poor connection or EBCM.