Antilock Brake System (ABS)
ABS Indicator Circuit Troubleshooting1. Turn the ignition switch ON (II), and watch the ABS indicator.
Does the ABS indicator come on?
YES-If the ABS indicator comes on and goes off, it's OK. If the ABS indicator stays on, go to step 13.
NO-Go to step 2.
2. Turn the ignition switch OFF then ON (II) again.
Does the brake system indicator come on?
YES-Go to step 3.
NO-Repair open in the brake system indicator circuit.
^ Blown TURN & HAZARD (7.5A) fuse. Open in the wire between the TURN & HAZARD (7.5A) fuse and the gauge assembly. Open circuit inside the fuse box.
3. Turn the ignition switch OFF.
4. Disconnect the ABS control unit connector B (12P).
5. Turn the ignition switch ON (II).
Does the ABS indicator come on?
YES-Check for loose ABS control unit connectors. If necessary, substitute a known-good ABS control unit and recheck.
NO-Go to step 6.
6. Check the ABS indicator bulb in the gauge assembly.
Is the bulb OK ?
YES-Go to step 7.
NO-Replace the ABS indicator bulb.
7. Turn the ignition switch OFF.
8. Disconnect the gauge assembly connector B (18P).
9. Check for continuity between the gauge assembly connector B (18P) terminal No. 16 and body ground.
Is there continuity?
YES-Repair short to body ground in the wire between the gauge assembly and the ABS control unit.
NO-Go to step 10.
10. Connect the gauge assembly connector B (18P).
11. Connect the gauge assembly connector C (14P) terminal No. 10 to body ground with a jumper wire.
12. Turn the ignition switch ON (II).
Does the ABS indicator come on?
YES-Repair open in the wire between the gauge assembly and body ground (G501).
NO-Replace the printed circuit board in the gauge assembly.
13. Check the R/C MIRROR (7.5A) fuse in the driver's under-dash fuse/relay box, and reinstall the fuse if it is OK.
Is the fuse OK?
YES-Go to step 14.
NO-Replace the fuse and recheck.
14. Connect the ABS control unit connector terminal A1 to body ground with a jumper wire.
15. Turn the ignition switch ON (II).
Does the ABS indicator go off ?
YES-Repair open in the wire between the ABS control unit and body ground (G402).
NO-Go to step 16.
16. Measure the voltage between the ABS control unit connector terminal All and body ground.
Is there battery voltage?
YES-Go to step 17.
NO-Repair open in the wire between the R/C MIRROR (7.5A) fuse and the ABS control unites
17. Connect the ABS control unit connector terminal B1 to body ground with a jumper wire.
Does the ABS indicator go off?
YES-Check for loose ABS control unit connectors. If necessary, substitute a known-good ABS control unit and recheck.
NO-Go to step 18.
18. Connect the gauge assembly connector B (18P) terminal No. 16 to body ground with a jumper wire.
Does the ABS indicator go off ?
YES-Repair open in the wire between the gauge assembly and the ABS control unit.
NO-Replace the printed circuit board in the gauge assembly.