Starter Switch Signal Circuit Troubleshooting

Starter Switch Signal Circuit Troubleshooting




1. Measure voltage between ECM connector terminals A24 and B20 with the ignition switch in the start position (III) and the clutch pedal pressed.

Is there battery voltage?

YES - The starter switch signal is OK.

NO - Go to step 2.

2. Inspect the No.9 (7.5 A) fuse in the under-dash fuse/relay box.

Is the fuse OK?

YES - Repair open in the wire between the ECM (A24) and the No.9 (7.5 A) fuse.

NO - Repair short in the wire between the ECM (A24) and the No.9 (7.5 A) fuse or the PGM-FI main relay (IGP). Replace the No.9 (7.5 A) fuse.