ABS Components

ABS Indicator Circuit Troubleshooting (cont'd)

19-78  

ABS indicator does not go off
  1. Check the No. 8 (20 A) fuse in the under-hood fuse/relay box and reinstall the fuse if it is OK.

Is the fuse OK?

YES - Go to step 2.

NO - Replace the fuse and recheck. If the fuse is blown, check for a short to body ground in this fuse circuit. If the circuit is OK, replace the ABS modulator-control unit.

  1. Check the No. 11 (7.5 A) fuse in the under-dash fuse/relay box and reinstall the fuse if it is OK.

Is the fuse OK?

YES - Go to step 3.

NO - Replace the fuse and recheck. If the fuse is blown, check for a short to body ground in this fuse circuit.

  1. Disconnect the ABS control unit 31P connector.
  2. Measure the voltage between terminal No. 18 and body ground.

ABS CONTROL UNIT 31P CONNECTOR

Wire side of female terminals

Is there battery voltage?

YES - Go to step 5.

NO - Repair open in the wire between the No. 8 (20 A) fuse and the ABS control unit.

  1. Turn the ignition switch ON (II).

  1. Measure the voltage between the ABS control unit 31P connector terminal No. 15 and body ground.

ABS CONTROL UNIT 31P CONNECTOR

Wire side of female terminals

Is there battery voltage?

YES - Go to step 7.

NO - Repair open in the wire between the No. 11 (7.5 A) fuse and the ABS control unit.

  1. Turn the ignition switch OFF.
  2. Check for continuity between the ABS control unit 31P connector terminal No. 19 and body ground.

ABS CONTROL UNIT 31P CONNECTOR

Wire side of female terminals

Is there continuity?

YES - Go to step 9.

NO - Repair open in the wire between the ABS control unit and body ground (G302).