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ABS Indicator Circuit Troubleshooting

  1. Turn the ignition switch ON (II), and watch the TCS indicator.

    Does the TCS indicator come on? 

    1. YES  - If the TCS indicator comes on and goes off, it's OK. If the TCS indicator stays on, go to step  13 .
    2. NO  - Go to step 2.
  2. Turn the ignition switch OFF then ON (II) again.

    Does the brake system indicator come on? 

    1. YES  - Go to step 3.
    2. NO  - Repair open in the brake system indicator circuit.
    • Blown BACKUP LIGHT (7.5A) fuse.
    • Open in the wire between the BACKUP LIGHT (7.5A) fuse and the gauge assembly.
    • Open circuit inside the fuse box.
  3. Turn the ignition switch OFF.
  4. Disconnect the ABS/TCS control unit connector A(26P).
  5. Turn the ignition switch ON (II).

    Does the ABS indicator come on? 

    1. YES  - Check for loose ABS/TCS control unit connectors. If necessary, substitute a known-good ABS/TCS control unit, and recheck.
    2. NO  - Go to step 6.
  6. Check the ABS indicator bulb in the gauge assembly.

    Is the bulb OK? 

    1. YES  - Go to step 7.
    2. NO  - Replace the ABS indicator bulb.
  7. Turn the ignition switch OFF.
  8. Disconnect the gauge assembly connector C (16P).
  9. Check for continuity between the gauge assembly connector C (16P) terminal No. 10 and body ground.
    Fig 1: Checking Continuity Between Gauge Assembly Connector C (16P) Terminal No. 10 & Body Ground
    G01519885Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Repair short to body ground in the wire between the gauge assembly and the ABS/TCS control unit.
    2. NO  - Go to step 10.
  10. Connect the gauge assembly connector C (16P).
  11. Connect the gauge assembly connector B (22P) terminal No. 16 to body ground with a jumper wire.
    Fig 2: Connecting Gauge Assembly Connector B (22P) Terminal No. 16 To Body Ground
    G01519886Courtesy of AMERICAN HONDA MOTOR CO., INC.
  12. Turn the ignition switch ON (II).

    Does the ABS indicator come on? 

    1. YES  - Repair open in the wire between the gauge assembly and body ground (G501).
    2. 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? 

    1. YES  - Go to step 14.
    2. NO  - Replace the fuse, and recheck.
  14. Connect the ABS/TCS control unit connector A (26P) terminal No. 1 to body ground with a jumper wire.
    Fig 3: Connecting ABS/TCS Control Unit Connector A (26P) Terminal No. 1 To Body Ground
    G01519887Courtesy of AMERICAN HONDA MOTOR CO., INC.
  15. Turn the ignition switch ON (II).

    Does the ABS indicator go off ? 

    1. YES  - Repair open in the wire between the ABS/TCS control unit and body ground (G303).
    2. NO  - Go to step 16.
  16. Measure the voltage between the ABS/TCS control unit connector A (26P) terminal No. 13 and body ground.
    Fig 4: Measuring Voltage Between ABS/TCS Control Unit Connector A (26P) Terminal No. 13 & Body Ground
    G01519888Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    1. YES  - Go to step 17.
    2. NO  - Repair open in the wire between the R/C MIRROR (7.5A) fuse and the ABS/TCS control unit.
  17. Connect the ABS/TCS control unit connector A (26P) terminal No. 4 to body ground with a jumper wire.
    Fig 5: Connecting ABS/TCS Control Unit Connector A (26P) Terminal No. 4 To Body Ground
    G01519889Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Does the ABS indicator go off? 

    1. YES  - Check for loose ABS/TCS control unit connectors. If necessary, substitute a known-good ABS/TCS control unit, and recheck.
    2. NO  - Go to step 18.
  18. Connect the gauge assembly connector C (16P) terminal No. 10 to body ground with a jumper wire.
    Fig 6: Connecting Gauge Assembly Connector C (16P) Terminal No. 10 To Body Ground
    G01519890Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Does the ABS indicator go off ? 

    1. YES  - Repair open in the wire between the gauge assembly and the ABS/TCS control unit.
    2. NO  - Replace the printed circuit board in the gauge assembly.
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