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TCS 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  7 .
    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. Check the TCS indicator bulb in the gauge assembly.

    Is the bulb OK ? 

    1. YES  - Go to step 4.
    2. NO  - Replace the TCS indicator bulb.
  4. Connect the gauge assembly connector B (22P) terminal No. 13 and body ground with a jumper wire.
    Fig 1: Connecting Gauge Assembly Connector B (22P) Terminal No. 13 & Body Ground
    G01519891Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Does the TCS indicator come on ? 

    1. YES  - Go to step 5.
    2. NO  - Replace the printed circuit board in the gauge assembly.
  5. Remove the jumper wire at the gauge assembly, and connect the ABS/TCS control unit connector B (16P) terminal No. 16 and body ground with a jumper wire.
    Fig 2: Connecting ABS/TCS Control Unit Connector B (16P) Terminal No. 16 & Body Ground
    G01519892Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Does the TCS indicator come on ? 

    1. YES  - Go to step 6.
    2. NO  - Repair open in the wire between the gauge assembly and the ABS/TCS control unit.
  6. Connect the ABS/TCS control unit connector C (12P) terminal No. 2 and body ground with a jumper wire.
    Fig 3: Connecting ABS/TCS Control Unit Connector C (12P) Terminal No. 2 & Body Ground
    G01519893Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Does the TCS indicator come on ? 

    1. YES  - Repair open in the wire between the ABS/TCS control unit and body ground (G101).
    2. NO  - Check for loose ABS/TCS control unit connectors. If necessary, substitute a known-good ABS/TCS control unit, and recheck.
  7. 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 8.
    2. NO  - Replace the fuse, and recheck.
  8. 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
    G01519894Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    1. YES  - Go to step 9.
    2. NO  - Repair open in the wire between the driver's under-dash fuse/relay box and the ABS/TCS control unit.
  9. Turn the ignition switch OFF.
  10. Disconnect the ABS/TCS control unit connector A (26P) and connector B (16P).
  11. Turn the ignition switch ON(II).

    Does the TCS indicator go off ? 

    1. YES  - Repair short to body ground in the wire between the gauge assembly and the ABS/TCS control unit.
    2. NO  - Check for loose ABS/TCS control unit connectors. If necessary, substitute a known-good ABS/TCS control unit, and recheck.
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