Civic (D16Y5 Engine With M/T) & Prelude

Place transmission in Neutral or Park position (A/T) or depress clutch pedal (M/T). Turn ignition switch to START position. Using backprobe set, measure voltage between PCM 32-pin connector "A" terminals No. 9 (Brown/Black wire) and 31-pin connector "C" terminal No. 6 (Blue/Red wire on Prelude or Blue/Orange on Civic). If battery voltage exists, starter switch signal is okay. If battery voltage does not exist, go to next step.
Inspect STARTER SIGNAL (7.5-amp) fuse located in left under-dash fuse/relay box. See STARTER SWITCH FUSE IDENTIFICATION table. If fuse is okay, repair open in circuit between STARTER SIGNAL (7.5-amp) fuse and 31-pin connector "C" terminal No. 6. If fuse is not okay, repair short in circuit between STARTER SIGNAL (7.5-amp) fuse and PCM 31-pin connector "C" terminal No. 6, or between STARTER SIGNAL (7.5-amp) fuse and PGM-FI connector terminal No. 2. Replace STARTER SIGNAL (7.5-amp) fuse. See WIRING DIAGRAMS article.

STARTER SWITCH FUSE IDENTIFICATION