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Starter Switch Signal Circuit Troubleshooting

  1. Shift the transmission into Park or neutral.
  2. Measure voltage between PCM connector terminals A24 and B20 with the ignition switch in the START (III) position.
    Fig 1: Measuring Voltage Between PCM Connector Terminals A24 & B20
    G01464141Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    1. YES  -The starter switch signal is OK.
    2. NO  -Go to step 3.
  3. Inspect the No. 13 STARTER SIGNAL (7.5A) fuse in the driver's under-dash fuse/relay box.

    Is the fuse OK? 

    1. YES  -Repair open in the wire between the PCM (A24) and the No. 13 STARTER SIGNAL (7.5A) fuse.
    2. NO  -Repair short in the wire between the PCM (A24) and the No. 13 STARTER SIGNAL (7.5A) fuse or the PGM-Fl main relay. Replace the No. 13 STARTER SIGNAL (7.5A) fuse.
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